Servlet 134 Filter Listener Directive 16 Action 26 Scripting 3 Implicit Object 95 Core Tag Library SQL SQL Tag Lib

Transcription

1 JSP JSP / CD

2 Servlet 134 Filter Listener Directive 16 Action 26 Scripting 3 Implicit Object 95 Core Tag Library SQL SQL Tag Library 15 XML XML Tag Library 27 Functions Tag Library 16 Tag Library 14 Expression Language 8 Servlet 68 Filter 88 Listener 8 JavaBean 9 Java JDBC 32 JSP Web Java JSP JSP 2.0 JSP Web JSP JSP JSP Servlet Servlet JavaBean JSP SQL JDBC JDBC MySQL JSP Web JSP

3 1 JSP 1 JSP JSP Java J2SDK J2SDK J2SDK Tomcat Tomcat Tomcat Tomcat Eclipse Eclipse tomcatplugin Tomcat JSP Directive page language extends import session session buffer autoflush isthreadsafe info errorpage iserrorpage contenttype pageencoding iselignored EL include taglib prefix tagdir uri attribute name... 22

4 2.4.2 required fragment rtexprvalue type description tag display-name body-content dynamic-attributes small-icon large-icon description example language import pageencoding iselignored EL variable name-given name-from-attribute alias variable-class declare description scope Action <jsp:usebean> id bean class bean type bean beanname bean scope bean <jsp:setproperty> name bean property bean param value <jsp:getproperty> name bean property bean <jsp:include> page flush... 35

5 3.4.3 <jsp:param> <jsp:forward> page <jsp:param> <jsp:param> name value <jsp:plugin> type code applet codebase applet name archive applet align height applet width applet hspace vspace jreversion JRE nspluginurl Netscape URL iepluginurl IE URL <jsp:params> <jsp:fallback> <jsp:params> <jsp:fallback> <jsp:root> version JSP xmlns:jsp XML xmlns:prefix <jsp:declaration> <jsp:scriptlet> <jsp:expression> <jsp:text> <jsp:output> omit-xml-declaration XML doctype-root-element doctype-system doctype-public <jsp:attribute> name trim <jsp:body> <jsp:element> <jsp:invoke>... 52

6 fragment var String varreader Reader scope <jsp:dobody> var String varreader Reader scope Script Declaration Expression Scriptlet Implicit Object application getattribute getattributenames getcontext ServletContext getinitparameter getinitparameternames getmajorversion getminorversion getmimetype MIME getnameddispatcher RequestDispatcher getrealpath getrequestdispatcher RequestDispatcher getresource getresourceasstream InputStream getresourcepaths getserverinfo getservlet Servlet getservletcontextname Servlet getservletnames Servlet getservlets Servlet log removeattribute setattribute config getinitparameter getinitparameternames getservletcontext ServletContext getservletname Servlet exception... 70

7 5.3.1 fillinstacktrace getcause getlocalizedmessage getmessage getstacktrace initcause printstacktrace setstacktrace tostring out DEFAULT_BUFFER NO_BUFFER UNBOUNDED_BUFFER clear clearbuffer close flush getbuffersize getremaining isautoflush newline print println page pagecontext APPLICATION ServletContext APPLICATION_SCOPE CONFIG ServletConfig EXCEPTION Exception OUT JspWriter PAGE Servlet PAGE_SCOPE PAGECONTEXT PageContext REQUEST ServletRequest REQUEST_SCOPE RESPONSE ServletResponse SESSION HttpSession SESSION_SCOPE findattribute forward getattribute getattributenamesinscope getattributesscope geterrordata ErrorData... 84

8 getexception getexpressionevaluator expressionevaluator getout JspWriter getpage page getrequest ServletRequest getresponse ServletResponse getservletconfig ServletConfig getservletcontext ServletContext getsession Session getvariableresolver VariableResolver handlepageexception include initialize pagecontext popbody out pushbody out release removeattribute setattribute request BASIC_AUTH CLIENT_CERT_AUTH DIGEST_AUTH FORM_AUTH getattribute getattributenames getauthtype getcharacterencoding getcontentlength getcontenttype getcontextpath getcookies Cookie getdateheader getheader getheadernames getheaders getinputstream getintheader getlocaladdr getlocale getlocales getlocalname getlocalport getmethod getparameter... 99

9 getparametermap getparameternames getparametervalues getpathinfo getpathtranslated getprotocol getquerystring getreader Reader getrealpath getremoteaddr getremotehost getremoteport getremoteuser getrequestdispatcher RequestDispathcer getrequestedsessionid getrequesturi URI getrequesturl URL getscheme getservername getserverport getservletpath Servlet getsession HttpSession getuserprincipal Principal isrequestedsessionidfromcookie ID Cookie isrequestedsessionidfromurl ID URL isrequestedsessionidvalid ID issecure isuserinrole removeattribute setattribute setcharacterencoding response SC_ACCEPTED SC_BAD_GATEWAY SC_BAD_REQUEST SC_CONFLICT SC_CONTINUE SC_CREATED SC_EXPECTATION_FAILED SC_FORBIDDEN SC_FOUND SC_GATEWAY_TIMEOUT SC_GONE SC_HTTP_VERSION_NOT_SUPPORTED HTTP

10 SC_INTERNAL_SERVER_ERROR SC_LENGTH_REQUIRED SC_METHOD_NOT_ALLOWED SC_MOVED_PERMANENTLY SC_MOVED_TEMPORARILY SC_MULTIPLE_CHOICES SC_NO_CONTENT SC_NON_AUTHORITATIVE_INFORMATION SC_NOT_ACCEPTABLE SC_NOT_FOUND SC_NOT_IMPLEMENTED SC_NOT_MODIFIED SC_OK SC_PARTIAL_CONTENT SC_PAYMENT_REQUIRED SC_PRECONDITION_FAILED SC_PROXY_AUTHENTICATION_REQUIRED SC_REQUEST_ENTITY_TOO_LARGE SC_REQUEST_TIMEOUT SC_REQUEST_URI_TOO_LONG URI SC_REQUESTED_RANGE_NOT_SATISFIABLE SC_RESET_CONTENT SC_SEE_OTHER SC_SERVICE_UNAVAILABLE SC_SWITCHING_PROTOCOLS SC_TEMPORARY_REDIRECT SC_UNAUTHORIZED SC_UNSUPPORTED_MEDIA_TYPE SC_USE_PROXY addcookie Cookie adddateheader addheader addintheader containsheader encoderedirecturl URL encodeurl URL flushbuffer getbuffersize getcharacterencoding getcontenttype getlocale getoutputstream ServletOutputStream getwriter PrintWriter iscommitted

11 reset resetbuffer senderror sendredirect setbuffersize setcharacterencoding setcontentlength setcontenttype setdateheader setheader setintheader setlocale setstatus session getattribute getattributenames getcreationtime getid getlastaccessedtime getmaxinactiveinterval getservletcontext ServletContext getsessioncontext getvalue getvaluenames invalidate isnew putvalue removeattribute removevalue setattribute setmaxinactiveinterval JSP 6 Core Tag Library <c:out> value default escapexml XML <c:set> value var scope target property

12 6.3 <c:remove> var scope <c:catch> <c:if> test var scope <c:choose> <c:when> <c:otherwise> <c:foreach> var items varstatus begin end step <c:fortokens> var items token delims varstatus begin end step <c:import> url URL context var scope charencoding varreader Reader <c:url> value URL context var scope <c:redirect> url URL context <c:param> name value

13 <fmt:setlocale> value variant scope <fmt:requestencoding> <fmt:message> key bundle var scope <fmt:param> <fmt:bundle> basename prefix <fmt:setbundle> basename var scope <fmt:formatnumber> value type pattern currencycode currencysymbol groupingused maxintegerdigits minintegerdigits maxfractiondigits minfractiondigits var scope <fmt:parsenumber> value type pattern parselocale integeronly var scope <fmt:formatdate> value type datestyle

14 7.9.4 timestyle pattern timezone var scope <fmt:parsedate> value type datestyle timestyle pattern timezone parselocale var scope <fmt:settimezone> value var scope <fmt:timezone> SQL SQL Tag Library <sql:setdatasource> datasource driver url URL user password var scope <sql:query> sql SQL datasource maxrows startrow var scope <sql:update> sql SQL datasource var scope <sql:param> <sql:dateparam>

15 8.5.1 value type <sql:transaction> datasource isolation XML XML Tag Library <x:parse> doc XML xml XML systemid filter vardom DOM scopedom DOM var scope <x:out> select XPath escapexml XML <x:set> select XPath var scope <x:if> select var scope <x:when> <x:choose> <x:otherwise> <x:foreach> var select XPath varstatus begin end step <x:transform> doc XML xml XML xslt XSLT docsystemid XML xsltsystemid XSLT var

16 9.9.7 scope result <x:param> name value Functions Tag Library fn:contains inputstring substring fn:containsignorecase inputstring substring fn:startswith inputstring prefix fn:endswith inputstring suffix fn:escapexml inputstring fn:indexof string substring fn:split string delimiters fn:join array separator fn:replace inputstring beforestring afterstring fn:trim

17 string fn:substring inputstring beginindex endindex fn:substringafter inputstring substring fn:substringbefore inputstring substring fn:tolowercase inputstring fn:touppercase inputstring fn:length input Tag Library TagSupport EVAL_BODY_AGAIN EVAL_BODY_INCLUDE EVAL_PAGE SKIP_BODY SKIP_PAGE id id pagecontext pagecontext doafterbody doendtag dostarttag findancestorwithclass getid id getparent getvalue getvalues release removevalue

18 setid id setpagecontext pagecontext setparent setvalue BodyTagSupport bodycontent bodycontent EVAL_BODY_BUFFERED EVAL_BODY_TAG doinitbody getbodycontent bodycontent getpreviousout out setbodycontent BodyContent SimpleTagSupport dotag findancestorwithclass getjspbody getjspcontext getparent setjspbody setjspcontext setparent DynamicAttributes TryCatchFinally docatch Catch dofinally Finally Tag Library Descriptor <taglib> <tlib-version> <jsp-version> JSP <short-name> <uri> URI <description> <display-name> <small-icon> <large-icon> <tag> <validator> <listener> <tag-file> <function> <name> <tag-class> <tei-class> <body-content>

19 <dynamic-attributes> <example> <variable> <attribute> <validator-class> <init-param> <listener-class> <path> <function-class> <function-signature> <name-given> <name-from-attribute> <variable-class> <declare> <scope> <required> <rtexprvalue> <type> <fragment> JspFragment <param-name> <param-value> Expression Language EL EL [] EL pagecontext pagescope requestscope sessionscope applicationscope param paramvalues header headervalues cookie Cookie initparam EL EL

20 EL VolFunc.java ccc.tld web.xml EL elfunc.jsp Servlet 13 Servlet Servlet init Servlet service destroy Servlet getservletconfig ServletConfig getservletinfo Servlet GenericServlet GenericServlet init Servlet service destroy Servlet getinitparameter getinitparameternames getservletconfig ServletConfig getservletcontext Servlet getservletinfo Servlet getservletname Servlet log HttpServlet HttpServlet init Servlet service destroy Servlet doget GET dopost POST dohead HEAD doput PUT dodelete DELETE dotrace TRACE dooptions OPTIONS getinitparameter

21 getinitparameternames getlastmodified ServletRequest getattribute getattributenames getcharacterencoding getcontentlength getcontenttype getinputstream getlocaladdr getlocale getlocales getlocalname getlocalport getparameter getparametermap getparameternames getparametervalues getprotocol getreader Reader getrealpath getremoteaddr getremotehost getremoteport getrequestdispatcher RequestDispatcher getscheme getservername getserverport issecure removeattribute setattribute setcharacterencoding ServletResponse flushbuffer getbuffersize getcharacterencoding getcontenttype getlocale getoutputstream ServletOutputStream getwriter PrintWriter iscommitted reset resetbuffer setbuffersize

22 setcharacterencoding setcontentlength setcontenttype setlocale HttpServletRequest BASIC_AUTH CLIENT_CERT_AUTH DIGEST_AUTH FORM_AUTH getattribute getattributenames getauthtype getcontextpath getcookies Cookie getdateheader Date getheader getheadernames getheaders getinputstream getintheader getmethod getpathinfo getpathtranslated getquerystring getremoteuser getrequestedsessionid getrequesturi URI getrequesturl URL getservletpath Servlet getsession HttpSession getuserprincipal Principal isrequestedsessionidfromcookie ID Cookie isrequestedsessionidfromurl ID URL isrequestedsessionidvalid ID issecure isuserinrole HttpServletResponse SC_ACCEPTED SC_BAD_GATEWAY SC_BAD_REQUEST SC_CONFLICT SC_CONTINUE SC_CREATED SC_EXPECTATION_FAILED

23 SC_FORBIDDEN SC_FOUND SC_GATEWAY_TIMEOUT SC_GONE SC_HTTP_VERSION_NOT_SUPPORTED HTTP SC_INTERNAL_SERVER_ERROR SC_LENGTH_REQUIRED SC_METHOD_NOT_ALLOWED SC_MOVED_PERMANENTLY SC_MOVED_TEMPORARILY SC_MULTIPLE_CHOICES SC_NO_CONTENT SC_NON_AUTHORITATIVE_INFORMATION SC_NOT_ACCEPTABLE SC_NOT_FOUND SC_NOT_IMPLEMENTED SC_NOT_MODIFIED SC_OK SC_PARTIAL_CONTENT SC_PAYMENT_REQUIRED SC_PRECONDITION_FAILED SC_PROXY_AUTHENTICATION_REQUIRED SC_REQUEST_ENTITY_TOO_LARGE SC_REQUEST_TIMEOUT SC_REQUEST_URI_TOO_LONG URI SC_REQUESTED_RANGE_NOT_SATISFIABLE SC_RESET_CONTENT SC_SEE_OTHER SC_SERVICE_UNAVAILABLE SC_SWITCHING_PROTOCOLS SC_TEMPORARY_REDIRECT SC_UNAUTHORIZED SC_UNSUPPORTED_MEDIA_TYPE SC_USE_PROXY addcookie Cookie adddateheader Date addheader addintheader containsheader encoderedirecturl URL encodeurl URL senderror sendredirect setdateheader

24 setheader setintheader setstatus ServletContext getattribute getattributenames getcontext ServletContext getinitparameter getinitparameternames getmajorversion getminorversion getmimetype MIME getnameddispatcher RequestDispatcher getrealpath getrequestdispatcher RequestDispatcher getresource getresourceasstream InputStream getresourcepaths getserverinfo getservlet Servlet getservletcontextname Servlet getservletnames Servlet getservlets Servlet log removeattribute setattribute Filter Filter destroy dofilter init FilterConfig getfiltername getinitparameter getinitparameternames getservletcontext ServletContext FilterChain ServletRequestWrapper ServletRequestWrapper getattribute getattributenames getcharacterencoding getcontentlength

25 getcontenttype getinputstream getlocaladdr getlocale getlocales getlocalname getlocalport getparameter getparametermap getparameternames getparametervalues getprotocol getreader Reader getrealpath getremoteaddr getremotehost getremoteport getrequest ServletRequest getrequestdispatcher RequestDispatcher getscheme getservername getserverport issecure removeattribute setattribute setcharacterencoding setrequest ServletRequest ServletResponseWrapper ServletResponseWrapper flushbuffer getbuffersize getcharacterencoding getcontenttype getlocale getoutputstream ServletOutputStream getresponse ServletResponse getwriter PrintWriter iscommitted reset resetbuffer setbuffersize setcharacterencoding setcontentlength setcontenttype

26 setlocale setresponse ServletResponse HttpServletRequestWrapper HttpServletRequestWrapper getauthtype getcontextpath getcookies Cookie getdateheader getheader getheadernames getheaders getintheader getmethod getpathinfo getpathtranslated getquerystring getremoteuser getrequestedsessionid getrequesturi URI getrequesturl URL getservletpath Servlet getsession HttpSession getuserprincipal Principal isrequestedsessionidfromcookie ID Cookie isrequestedsessionidfromurl ID URL isrequestedsessionidvalid ID isuserinrole HttpServletResponseWrapper HttpServletResponseWrapper addcookie Cookie adddateheader addheader addintheader containsheader encoderedirecturl URL encodeurl URL senderror sendredirect setdateheader setheader setintheader setstatus Listener

27 15.1 ServletContextListener contextinitialized Web contextdestroyed Servlet ServletContextEvent ServletContextEvent getservletcontext Servlet ServletContextAttributeListener attributeadded attributeremoved attributereplaced ServletContextAttributeEvent ServletContextAttributeEvent getservletcontext Servlet getname getvalue HttpSessionListener sessioncreated sessiondestroyed HttpSessionActivationListener sessiondidactivate sessionwillpassivate HttpSessionEvent HttpSessionEvent getsession HttpSession HttpSessionAttributeListener attributeadded attributeremoved attributereplaced HttpSessionBindingListener valuebound valueunbound HttpSessionBindingEvent HttpSessionBindingEvent getname getsession HttpSession getvalue ServletRequestListener requestinitialized Web requestdestroyed Web ServletRequestEvent ServletRequestEvent getservletcontext Servlet getservletrequest ServletRequest ServletRequestAttributeListener

28 attributeadded attributeremoved attributereplaced ServletRequestAttributeEvent ServletRequestAttributeEvent getname getvalue JavaBean JavaBean JSP JavaBean <jsp:usebean> JavaBean <jsp:setproperty> JavaBean <jsp:getproperty> JavaBean Introspection JavaBean page request session application JSP Model 1 JSP+JavaBeans Model 2 MVC JSP 17 SQL SQL DDL CREATE DATABASE DROP DATABASE CREATE TABLE ALTER TABLE DROP TABLE CREATE INDEX DROP INDEX CREATE VIEW DROP VIEW DQL SELECT INTO WHERE GROUP BY HAVING ORDER BY

29 17.4 DML INSERT UPDATE DELETE DCL GRANT REVOKE COMMIT ROLLBACK Java JDBC JDBC Type1 JDBC-ODBC Type2 API Type3 JDBC Java Type4 Java MySQL MySQL MySQL JDBC MySQL Connection TRANSACTION_NONE TRANSACTION_READ_COMMITTED TRANSACTION_READ_UNCOMMITTED TRANSACTION_REPEATABLE_READ TRANSACTION_SERIALIZABLE clearwarnings close commit createstatement Statement getautocommit getcatalog getholdability getmetadata DatabaseMetaData gettransactionisolation gettypemap getwarnings isclosed isreadonly nativesql SQL preparecall CallableStatement preparestatement PreparedStatement releasesavepoint Savepoint rollback

30 setautocommit setcatalog setholdability setreadonly setsavepoint Savepoint settransactionisolation settypemap Statement CLOSE_ALL_RESULTS CLOSE_CURRENT_RESULT EXECUTE_FAILED KEEP_CURRENT_RESULT NO_GENERATED_KEYS RETURN_GENERATED_KEYS SUCCESS_NO_INFO addbatch cancel Statement clearbatch clearwarnings close execute SQL executebatch executequery executeupdate getconnection Connection getfetchdirection getfetchsize getgeneratedkeys getmaxfieldsize getmaxrows getmoreresults getquerytimeout getresultset ResultSet getresultsetconcurrency getresultsetholdability getresultsettype getupdatecount getwarnings setcursorname setescapeprocessing setfetchdirection setfetchsize setmaxfieldsize setmaxrows

31 setquerytimeout PreparedStatement addbatch clearparameters execute SQL executequery executeupdate getmetadata ResultSetMetaData getparametermetadata ParameterMetaData setarray Array setasciistream InputStream setbigdecimal BigDecimal setbinarystream InputStream setblob Blob setboolean boolean setbyte byte setbytes setcharacterstream Reader setclob Clob setdate Date setdouble double setfloat float setint int setlong long setnull NULL setobject setref REF setshort short setstring String settime Time settimestamp Timestamp setunicodestream InputStream seturl URL CallableStatement getarray Array getbigdecimal BigDecimal getblob Blob getboolean boolean getbyte byte getbytes getclob Clob getdate Date getdouble double getfloat float

32 getint int getlong long getobject getref REF getshort short getstring String gettime Time gettimestamp Timestamp geturl URL registeroutparameter setasciistream InputStream setbigdecimal BigDecimal setbinarystream InputStream setboolean boolean setbyte byte setbytes setcharacterstream Reader setdate Date setdouble double setfloat float setint int setlong long setnull NULL setobject setshort short setstring String settime Time settimestamp Timestamp seturl URL wasnull null ResultSet CLOSE_CURSORS_AT_COMMIT CONCUR_READ_ONLY CONCUR_UPDATABLE FETCH_FORWARD FETCH_REVERSE FETCH_UNKNOWN HOLD_CURSORS_OVER_COMMIT TYPE_FORWARD_ONLY TYPE_SCROLL_INSENSITIVE TYPE_SCROLL_SENSITIVE absolute afterlast beforefirst

33 cancelrowupdates clearwarnings close deleterow findcolumn first getarray Array getasciistream ASCII getbigdecimal BigDecimal getbinarystream getblob Blob getboolean boolean getbyte byte getbytes getcharacterstream Reader getclob Clob getconcurrency getcursorname getdate Date getdouble double getfetchdirection getfetchsize getfloat float getint int getlong long getmetadata ResultSetMetaData getobject getref REF getrow getshort short getstatement Statement getstring String gettime Time gettimestamp Timestamp gettype geturl URL getwarnings insertrow isafterlast isbeforefirst isfirst islast last movetocurrentrow

34 movetoinsertrow next previous refreshrow relative rowdeleted rowinserted rowupdated setfetchdirection setfetchsize updatearray Array updateasciistream ASCII updatebigdecimal BigDecimal updatebinarystream updateblob Blob updateboolean boolean updatebyte byte updatebytes updatecharacterstream updateclob Clob updatedate Date updatedouble double updatefloat float updateint int updatelong long updatenull null updateobject Object updateref REF updaterow updateshort short updatestring String updatetime Time updatetimestamp Timestamp wasnull null XML XML Tag Library XML XML Tag Library XML XML taglib prefix uri

35 taglib prefix="x" uri=" %> XML 10 parse out set if when choose otherwise foreach transform param 9.1 <x:parse> <x:parse> XML <x:parse [doc="xmldocument" xml="xmldocument"] [systemid="systemid"] [filter="filter"] var="varname" [scope="page request session application"] /> <x:parse [systemid="systemid"] [filter="filter"] var="varname" [scope="page request session application"]> xmldocument </x:parse> <x:parse [doc="xmldocument" xml="xmldocument"] [systemid="systemid"] [filter="filter"] vardom="domname" [scopedom="page request session application"] /> <x:parse [systemid="systemid"] [filter="filter"] vardom="domname" [scopedom="page request session application"]> xmldocument </x:parse> <x:parse> 8 doc xml systemid filter vardom ScopeDom var scope doc XML doc XML <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <c:import url="txl.xml" charencoding="gb2312" var="xmldoc" /> <x:parse doc="${xmldoc}" var="doc" /> txl.xml <?xml version="1.0" encoding="gb2312"?> <linkmans> <linkman id="1"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> < >babel@laser.com</ > </linkman> <linkman id="2"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> < >jacinth@sanfen.com</ > </linkman>

36 <linkman id="3"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> <linkman id="4"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> <linkman id="5"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> <linkman id="6"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> <linkman id="7"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> </linkmans> txl.xml doc xml XML xml XML doc page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import url="txl.xml" charencoding="gb2312" var="xmldoc" /> <x:parse xml="${xmldoc}" var="doc" /> systemid systemid XML URI page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="doc" systemid="txl.dtd">

37 <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> txl.dtd <?xml version="1.0" encoding="gb2312"?> <!ELEMENT linkmans (linkman)+> <!ELEMENT linkman (name,sex,birthday,mobile,phone, *)> <!ATTLIST linkman id ID #REQUIRED> <!ELEMENT name (#PCDATA)> <!ELEMENT sex (#PCDATA)> <!ELEMENT birthday (#PCDATA)> <!ELEMENT mobile (#PCDATA)> <!ELEMENT phone (#PCDATA)> <!ELEMENT (#PCDATA)> txl.dtd txl.xml doc filter filter org.xml.sax.xmlfilter filter

38 9.1.5 vardom DOM vardom DOM org.w3c.dom.document vardom scopedom DOM scopedom DOM page request session application scopedom page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse vardom="doc" scopedom="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <c:import var="stylesheet" url="txl.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${stylesheet}" /> XSTL txl.xsl <?xml version="1.0" encoding="gb2312"?> <xsl:stylesheet xmlns:xsl=" version="1.0"> <xsl:template match="linkmans"> <table border="1" width="100%"> <tr> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <xsl:for-each select="linkman"> <tr> <td align="center"> <xsl:value-of </td> <td align="center"> <xsl:value-of select="name"/> </td> <td align="center"> <xsl:value-of select="mobile"/> </td> <td align="right"> <xsl:value-of select=" "/> </td> </tr> </xsl:for-each> </table> </xsl:template> </xsl:stylesheet> 9.1

39 9.1 <x:parse> vardom scopedom var var var var scope scope page request session application scope page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="doc" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <table> <tr align=center> <td><b> </B></td> <td><b> </B></td> <td><b> </B></td> <td><b> </b></td> </tr> <x:foreach select="$doc/linkmans/linkman"> <tr> <td align=center><x:out select="name" /></td> <td align=right><x:out select="birthday" /></td> <td align=right><x:out select="mobile" /></td> <td align=right><x:out select=" " /></td> </tr> </x:foreach> </table> 9.2

40 9.2 <x:parse> var scope 9.2 <x:out> <x:out> <%= > XPath <x:out> <x:out select="xpathexpression" [escapexml="true false"] /> <x:out> select escapexml select XPath select XPath page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> id=1 </br> <x:out select="$txl//linkman" /></br></br> id=3 </br> <x:out /></br> <x:out> select

41 9.2.2 escapexml XML escapexml true < > & XML escapexml page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <x:out select="$txl//url" escapexml="true" /> <x:out> escapexml url XML escapexml false <x:set> <x:set> XPath <x:set select="xpathexpression" var="varname" [scope="page request session application"] /> <x:set> 3 select var scope select XPath select XPath <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <x:set var="name" select="$txl//name" /> <x:set var="linkman" select="$txl//linkman" />

42 name linkman <linkman id="1"> <name> </name> <sex> </sex> <birthday> </birthday> <mobile> </mobile> <phone> </phone> </linkman> XML var var XML scope scope page request session application scope page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <x:set var="linkman" select="$txl//linkman" /> <table> <tr> <td align=right> </td> <td><x:out select="$linkman//name" /></td> </tr> <tr> <td align=right> </td> <td><x:out select="$linkman//sex" /></td> </tr> <tr> <td align=right> </td> <td><x:out select="$linkman//birthday" /></td> </tr> <tr> <td align=right> </td> <td><x:out select="$linkman//mobile" /></td> </tr> <tr> <td align=right> </td> <td><x:out select="$linkman//phone" /></td> </tr> <tr> <td align=right> </td> <td><x:out select="$linkman// " /></td> </tr> </table> 9.5

43 9.5 <x:set> var scope 9.4 <x:if> <x:if> XML XPath true <x:if> <x:if select="testxpathexpression" var="varname" [scope="page request session application"] /> <x:if select="testxpathexpression" [var="varname"] [scope="page request session application"]> JSP elements </x:if> <x:if> 3 select var scope select select select <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <c:set var="linkmansex" value=" " /> <c:foreach begin="1" end="7" var="linkmanid"> <x:if select="$txl/linkmans/linkman[@id=$linkmanid]/sex[. = $linkmansex]"> <x:out select="$txl/linkmans/linkman[@id=$linkmanid]/name" /> <x:out select="$txl/linkmans/linkman[@id=$linkmanid]/ " /></br> </x:if> </c:foreach> $txl/linkmans/linkman[@id=$linkmanid]/sex[. = $linkmansex] linkman id linkmanid linkman sex linkmansex <x:if> 9.6

44 9.6 <x:if> select var var Boolean var page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <c:set var="linkmansex" value=" " /> <c:foreach begin="1" end="7" var="linkmanid"> <x:if var="isfemale" = $linkmansex]" /> <c:if test="${isfemale}"> <x:out /> <x:out /></br> </c:if> </c:foreach> <x:if> var

45 9.4.3 scope scope page request session application scope <c:foreach begin="1" end="7" var="linkmanid"> <x:if var="isfemale" scope="session" = $linkmansex]" /> <c:if test="${isfemale}"> <x:out /> <x:out /></br> </c:if> </c:foreach> 9.5 <x:when> <x:when> <x:choose> true <x:when> <x:when select="testxpathexpression"> JSP elements </x:when> <x:when> select select select page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="txl" scope="application"> <c:import url="txl.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="100%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <x:foreach select="$txl/linkmans/linkman"> <x:choose> <x:when select="sex[. = ' ' ]"> <tr bgcolor="lightblue"> </x:when> <x:otherwise> <tr> </x:otherwise> </x:choose> <td align=center><x:out select="name" /></td> <td align=center><x:out select="sex" /></td> <td align=center><x:out select="birthday" /></td> <td align=right><x:out select="mobile" /></td> <td align=right><x:out select="phone" /></td> <td align=right><x:out select=" " /></td> </tr> </x:foreach> </table>

46 <x:when> select 9.6 <x:choose> <x:choose> <x:when> <x:otherwise> <x:choose> [<x:when select="testxpathexpression"> JSP elements </x:when>] + [<x:otherwise> JSP elements </x:otherwise>] </x:choose> <x:choose> <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="fmt" uri=" %> <%@ taglib prefix="x" uri=" %> <fmt:requestencoding value="gb2312" /> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <FORM method="post" action="xml_061.jsp"> </br> <select name="bookname"> <x:foreach select="$book/books/book"> <option><x:out select="name" /></option> </x:foreach> </select> <input type="submit" value=" "> </FORM> xml_061.jsp <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="fmt" uri=" %> <%@ taglib prefix="x" uri=" %> <fmt:requestencoding value="gb2312" /> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <x:set var="selectbook" select="$book/books/book[name = $param:bookname]" /> <hr>

47 <x:out select="$selectbook//name" /></br> <x:out /><x:out select="$selectbook//price" /></br> <x:choose> <x:when select="$selectbook//type[. = ' ']"> <font color=red> </font> </x:when> <x:when select="$selectbook//type[. = ' ']"> <font color=red> </font> </x:when> <x:otherwise> <font color=red> </font> </x:otherwise> </x:choose> book.xml <?xml version="1.0" encoding="gb2312"?> <books> <book> <name> JSP </name> <type> </type> <price symbol=" ">79.00</price> </book> <book> <name> Struts </name> <type> </type> <price symbol=" ">49.00</price> </book> <book> <name> </name> <type> </type> <price symbol=" ">16.80</price> </book> <book> <name> </name> <price symbol=" ">15.80</price> </book> <book> <name> </name> <type> </type> <price symbol=" ">25.00</price> </book> </books> <x:choose> 9.7 <x:otherwise> <x:otherwise> <x:choose> <x:when> false <x:otherwise>

48 <x:otherwise> JSP elements </x:otherwise> <x:otherwise> <x:choose> <x:when select="$selectbook//type[. = ' ']"> <font color=red> </font> </x:when> <x:when select="$selectbook//type[. = ' ']"> <font color=red> </font> </x:when> <x:otherwise> <font color=red> </font> </x:otherwise> </x:choose> <x:foreach> <x:foreach> XML <x:foreach select="xpathexpression" [var="varname"] [varstatus="varstatus"] [begin="startindex"] [end="stopindex"] [step="increment"]> JSP elements </x:foreach> <x:foreach> 6 var select varstatus begin end step var var select XPath var <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="65%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> </tr> <x:foreach var="item" select="$book/books/book"> <tr> <td align=center><x:out select="$item//name" /></td> <td align=center><x:out select="$item//type" /></td> <td align=center><x:out select="$item//price/@symbol" /><x:out select="$item//price" /></td> </tr> </x:foreach> </table> 9.10

49 9.10 <x:foreach> var select XPath select XPath page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="65%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> </tr> <x:foreach select="$book/books/book"> <tr> <td align=center><x:out select="name" /></td> <td align=center><x:out select="type" /></td> <td align=center><x:out /><x:out select="price" /></td> </tr> </x:foreach> </table> varstatus varstatus javax.servlet. jsp.jstl.core.looptagstatus varstatus page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="75%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <x:foreach varstatus="status" select="$book/books/book"> <tr> <td align=center><c:out value="${status.index+1}" /></td> <td align=center><x:out select="name" /></td> <td align=center><x:out select="type" /></td>

50 <td align=center><x:out /><x:out select="price" /></td> </tr> </x:foreach> </table> <x:foreach> varstatus

51 9.8.4 begin begin 0 begin <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="75%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <x:foreach varstatus="status" select="$book/books/book" begin="2"> <tr> <td align=center><c:out value="${status.index+1}" /></td> <td align=center><x:out select="name" /></td> <td align=center><x:out select="type" /></td> <td align=center><x:out select="price/@symbol" /><x:out select="price" /></td> </tr> </x:foreach> </table> <x:foreach> begin end end <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="75%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <x:foreach varstatus="status" select="$book/books/book" end="3"> <tr> <td align=center><c:out value="${status.index+1}" /></td>

52 <td align=center><x:out select="name" /></td> <td align=center><x:out select="type" /></td> <td align=center><x:out /><x:out select="price" /></td> </tr> </x:foreach> </table> <x:foreach> end step step page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <x:parse var="book" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:parse> <table border=0 width="75%"> <tr bgcolor="lightgreen"> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <x:foreach varstatus="status" select="$book/books/book" step="2"> <tr> <td align=center><c:out value="${status.index+1}" /></td> <td align=center><x:out select="name" /></td> <td align=center><x:out select="type" /></td> <td align=center><x:out /><x:out select="price" /></td> </tr> </x:foreach> </table> <x:foreach> step

53 9.9 <x:transform> <x:transform> XSLT XML <x:transform doc="xmldocument" xslt="xsltstylesheet" [docsystemid="xmlsystemid"] [xsltsystemid="xsltsystemid"] [var="varname" [scope="page request session application"] result="resultobject"] /> <x:transform doc="xmldocument" xslt="xsltstylesheet" [docsystemid="xmlsystemid"] [xsltsystemid="xsltsystemid"] [var="varname" [scope="page request session application"] result="resultobject"]> [<x:param name="parametername" value="parametervalue" />] + </x:transform> <x:transform xslt="xsltstylesheet" [docsystemid="xmlsystemid"] [xsltsystemid="xsltsystemid"] [var="varname" [scope="page request session application"] result="resultobject"]> XMLDocument [<x:param name="parametername" value="parametervalue" />] + </x:transform> <x:transform> 8 doc xml xslt docsystemid xsltsystemid var scope result doc XML doc XML XML <x:set> XML doc <%@ page contenttype="text/html;charset=gb2312" %> <%@ taglib prefix="c" uri=" %> <%@ taglib prefix="x" uri=" %> <c:import var="doc" url="txl.xml" charencoding="gb2312" /> <c:import var="stylesheet" url="txl.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${stylesheet}" /> <x:transform> doc

54 9.9.2 xml XML xml XML doc page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="doc" url="txl.xml" charencoding="gb2312" /> <c:import var="stylesheet" url="txl.xsl" charencoding="gb2312" /> <x:transform xml="${doc}" xslt="${stylesheet}" /> xslt XSLT xslt XSLT page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="doc" url="book.xml" charencoding="gb2312" /> <c:import var="stylesheet" url="book.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${stylesheet}" /> XSLT book.xsl <?xml version="1.0" encoding="gb2312"?> <xsl:stylesheet xmlns:xsl=" version="1.0"> <xsl:template match="books"> <table border="0" width="70%"> <tr bgcolor="lightblue" > <th> </th> <th> </th> <th> </th> </tr> <xsl:for-each select="book"> <tr bgcolor="#dddddd"> <td align="center"> <xsl:value-of select="name"/> </td> <td align="center"> <xsl:value-of select="type"/> </td> <td align="right"> <xsl:value-of <xsl:value-of select="price"/> </td> </tr> </xsl:for-each> </table> </xsl:template> </xsl:stylesheet> 9.16

55 9.16 <x:transform> xslt docsystemid XML docsystemid XML URI page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="stylesheet" url="book.xsl" charencoding="gb2312" /> <x:transform xslt="${stylesheet}" docsystemid="book.dtd"> <c:import url="book.xml" charencoding="gb2312" /> </x:transform> xsltsystemid XSLT xsltsystemid XSLT URI page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="stylesheet" url="book.xsl" charencoding="gb2312" /> <x:transform xslt="${stylesheet}" xsltsystemid="xslt.dtd"> <c:import url="book.xml" charencoding="gb2312" /> </x:transform> var var org.w3c.dom.document var scope scope page request session application scope

56 page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:set var="xsl1"> <?xml version="1.0" encoding="gb2312"?> <xsl:stylesheet xmlns:xsl=" version="1.0"> <xsl:template match="books"> <mybooks> <xsl:for-each select="book"> <mybook> <bookname><xsl:value-of select="name" /></bookname> <booktype><xsl:value-of select="type" /> </booktype> <bookprice><xsl:value-of /> <xsl:value-of select="price" /></bookprice> </mybook> </xsl:for-each> </mybooks> </xsl:template> </xsl:stylesheet> </c:set> <c:set var="xsl2"> <?xml version="1.0" encoding="gb2312"?> <xsl:stylesheet xmlns:xsl=" version="1.0"> <xsl:template match="mybooks"> <center> <table border="0" width="70%"> <tr bgcolor="lightblue" > <th> </th> <th> </th> <th> </th> </tr> <xsl:for-each select="mybook"> <tr bgcolor="#dddddd"> <td align="center"> <xsl:value-of select="bookname"/> </td> <td align="center"> <xsl:value-of select="booktype"/> </td> <td align="right"> <xsl:value-of select="bookprice"/> </td> </tr> </xsl:for-each> </table> </center> </xsl:template> </xsl:stylesheet> </c:set> <x:transform xslt="${xsl1}" var="temp" scope="application"> <c:import url="book.xml" charencoding="gb2312" /> </x:transform> <x:transform xslt="${xsl2}" doc="${temp}" /> <x:transform> var scope

57 9.9.8 result result javax.xml. transform.result result page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="doc" url="book.xml" charencoding="gb2312" /> <c:import var="xsl" url="book.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${xsl}" result="${outputresult}" /> 9.10 <x:param> <x:param> Transform <x:transform> <x:param> <x:param name="parametername" value="parametervalue" /> <x:param name="parametername"> parametervalue </x:param> <x:param> name value name name page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="doc" url="book.xml" charencoding="gb2312" /> <c:import var="xsl" url="books.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${xsl}"> <x:param name="color"> green </x:param> </x:transform> XSLT books.xsl <?xml version="1.0" encoding="gb2312"?> <xsl:stylesheet xmlns:xsl=" version="1.0"> <xsl:param name="color"/> <xsl:template match="books"> <center> <table width="75%"> <xsl:choose> <xsl:when test="$color='blue'"> <tr bgcolor="lightblue"> <th> </th> <th> </th> <th> </th> </tr> </xsl:when> <xsl:when test="$color='green'"> <tr bgcolor="lightgreen"> <th> </th>

58 <th> </th> <th> </th> </tr> </xsl:when> <xsl:otherwise> <tr bgcolor="#dddddd"> <th> </th> <th> </th> <th> </th> </tr> </xsl:otherwise> </xsl:choose> <xsl:for-each select="book"> <tr bgcolor="#dddddd"> <td align="center"> <xsl:value-of select="name"/> </td> <td align="center"> <xsl:value-of select="type"/> </td> <td align="right"> <xsl:value-of <xsl:value-of select="price"/> </td> </tr> </xsl:for-each> </table> </center> </xsl:template> </xsl:stylesheet> <x:param> name value value page contenttype="text/html;charset=gb2312" %> taglib prefix="c" uri=" %> taglib prefix="x" uri=" %> <c:import var="doc" url="book.xml" charencoding="gb2312" /> <c:import var="xsl" url="books.xsl" charencoding="gb2312" /> <x:transform doc="${doc}" xslt="${xsl}"> <x:param name="color" value="blue" /> </x:transform> 9.19

59 9.19 <x:param> value 13 Servlet Servlet Web Java Servlet Servlet API javax.servlet javax.servlet.http Servlet javax.servlet.servlet HTTP Servlet javax.servlet.http.httpservlet 13.1 Servlet Servlet Servlet Servlet Servlet Servlet Servlet Servlet init() service() Servlet destroy() Servlet getservletconfig() getservletinfo() init Servlet init() Servlet public void init ( ServletConfig config ) throws ServletException // ServletConfig Servlet Servlet service service()

60 public void service ( ServletRequest request, // ServletRequest ServletResponse response // ServletResponse Servlet ) throws ServletException, IOException init() package mil.zcz.jsp.servlet; import java.io.*; import javax.servlet.*; public class GreetServlet implements Servlet { private String greeting; public void destroy() { greeting = null; } public ServletConfig getservletconfig() { return null; } public String getservletinfo() { return "Copyright 2006 Wildcat Studio. All rights reserved."; } public void init(servletconfig config) throws ServletException { greeting = " Servlet "; } } public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); out.println("<html>"); out.println("<head>"); out.println("<title>greetservlet</title>"); out.println("</head>"); out.println("<h2>"); out.println(greeting); out.println("</h2>"); out.close(); } web.xml <?xml version="1.0" encoding="iso "?> <web-app xmlns=" xmlns:xsi=" xsi:schemalocation=" version="2.4"> <servlet> <servlet-name>greetservlet</servlet-name> <servlet-class>mil.zcz.jsp.servlet.greetservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>greetservlet</servlet-name> <url-pattern>/greet</url-pattern> </servlet-mapping> </web-app> 13.1

61 13.1 Servlet service destroy Servlet destroy() Servlet public void destroy ( ) Servlet service() getservletconfig ServletConfig getservletconfig() Servlet public ServletConfig getservletconfig ( ) ServletConfig null public ServletConfig getservletconfig() { return null; } getservletinfo Servlet getservletinfo() public String getservletinfo ( ) Servlet HTML XML public String getservletinfo() { return "Copyright 2006 Wildcat Studio. All rights reserved."; }

62 13.2 GenericServlet GenericServlet Servlet ServletConfig GenericServlet Servlet Servlet service() GenericServlet javax.servlet.genericservlet public GenericServlet ( ) Servlet init() init Servlet init() Servlet public void init ( ServletConfig config ) throws ServletException public void init ( ) throws ServletException // ServletConfig Servlet init(servletconfig) super.init(config) init() service service() public abstract void service ( ServletRequest req, // ServletRequest ServletResponse res // ServletResponse Servlet ) throws ServletException, IOException service() GenericServlet package mil.zcz.jsp.servlet; import java.io.*; import java.sql.*; import javax.servlet.*; public class DBServlet extends GenericServlet { private String url; public void init() throws ServletException { url = "jdbc:mysql//localhost:3306/txl?user=root&password="; } public void destroy() { url = null; }

63 public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { String user = super.getinitparameter("user"); String pass = super.getinitparameter("password"); if ((user!= null) && (pass!= null)) { url = "jdbc:mysql://localhost:3306/txl?user=" + user + "&password=" + pass; } response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); } try { try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException ce) { System.out.println(ce); } Connection conn = DriverManager.getConnection(url); Statement stmt = conn.createstatement(); ResultSet rs = stmt.executequery("select * FROM linkman"); out.println("<table border=1><tr>"); out.println("<th> </th>"); out.println("<th> </th>"); out.println("<th> </th>"); out.println("<th> </th></tr>"); while (rs.next()) { out.println("<tr><td>"); out.println(rs.getstring("name")); out.println("</td><td>"); out.println(rs.getstring("birthday")); out.println("</td><td>"); out.println(rs.getstring("mobile")); out.println("</td><td>"); out.println(rs.getstring(" ")); out.println("</td></tr>"); } out.println("</table>"); } catch (SQLException e) { System.out.println(e); } web.xml <?xml version="1.0" encoding="iso "?> <web-app xmlns=" xmlns:xsi=" xsi:schemalocation=" version="2.4"> <servlet> <servlet-name>dbservlet</servlet-name> <servlet-class>mil.zcz.jsp.servlet.dbservlet</servlet-class> <init-param> <param-name>user</param-name> <param-value>root</param-value> </init-param> <init-param> <param-name>password</param-name> <param-value>kp12345</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dbservlet</servlet-name> <url-pattern>/db</url-pattern> </servlet-mapping> </web-app> 13.2

64 13.2 GenericServlet service destroy Servlet destroy() Servlet public void destroy ( ) getinitparameter getinitparameter() public String getinitparameter ( String name // ) null getinitparameternames getinitparameternames() public Enumeration getinitparameternames ( ) Servlet Servlet Enumeration e = this.getinitparameternames(); while (e.hasmoreelements()) { String paramname = e.nextelement().tostring(); out.println(paramname + " = " + this.getinitparameter(paramname)); } getservletconfig ServletConfig getservletconfig() Servlet

65 public ServletConfig getservletconfig ( ) ServletConfig getinitparameter() public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { PrintWriter out = response.getwriter(); } String user = super.getservletconfig().getinitparameter("user"); out.println(user); root getservletcontext Servlet getservletcontext() public ServletContext getservletcontext ( ) ServletContext public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { PrintWriter out = response.getwriter(); } ServletContext ctx = super.getservletcontext(); ctx.setattribute("user", "Forrid"); out.println(ctx.getattribute("user")); Forrid

66 getservletinfo Servlet getservletinfo() public String getservletinfo() getservletname Servlet getservletname() public String getservletname ( ) DBServlet DBServlet log log() Servlet public void log ( String msg ) public void log ( String message, Throwable t ) // // // java.lang.throwable public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { super.log(" "); } 13.3 HttpServlet HttpServlet GenericServlet HttpServlet Web HTTP Servlet HttpServlet doget() HTTP GET dopost() HTTP POST doput() HTTP PUT dodelete() HTTP DELETE init() destroy() Servlet getservletinfo()

67 HttpServlet getservletconfig() getservletcontext() getservletinfo() getservletname() log() GenericServlet HttpServlet javax.servlet.http.httpservlet public HttpServlet ( ) init Servlet init() Servlet service service() protected void service ( HttpServletRequest request, // HttpServletRequest HttpServletResponse response // HttpServletResponse Servlet ) throws ServletException, IOException public void service ( ServletRequest request, // HttpServletRequest ServletResponse response // HttpServletResponse Servlet ) throws ServletException, IOException destroy Servlet destroy() Servlet doget GET doget() HTTP GET protected void doget ( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException // HttpServletRequest // HttpServletResponse Servlet doget() HTTP GET HTTP HEAD HEAD GET PrintWriter HTTP BAD REQUEST package mil.zcz.jsp.servlet;

68 import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class WelcomeServlet extends HttpServlet { public void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); String user = request.getparameter("user"); String msg = "Hi " + user + ", welcome to the servlet's world!"; out.println(msg); out.close(); } } web.xml <?xml version="1.0" encoding="iso "?> <web-app xmlns=" xmlns:xsi=" xsi:schemalocation=" version="2.4"> <servlet> <servlet-name>welcomeservlet</servlet-name> <servlet-class>mil.zcz.jsp.servlet.welcomeservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>welcomeservlet</servlet-name> <url-pattern>/welcome</url-pattern> </servlet-mapping> </web-app> JSP welcome.jsp <html> <head> <title>welcome</title> </head> <B>Please input your name:</b></br> <form method="get" action="/jspbook/welcome"> <input type="text" name="user" /> <input type="submit" value="submit" /> </form> HttpServlet doget dopost POST dopost() HTTP POST protected void dopost ( HttpServletRequest request, // HttpServletRequest

69 ) HttpServletResponse response // HttpServletResponse Servlet throws ServletException, IOException PrintWriter HTTP BAD REQUEST package mil.zcz.jsp.servlet; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class WelcomeServlet extends HttpServlet { public void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); String user = request.getparameter("user"); String msg = "Hi " + user + ", welcome to the servlet's world!"; out.println(msg); out.close(); } public void dopost(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { this.doget(request, response); // doget() } } JSP welcome.jsp <B>Please input your name:</b></br> <form method="post" action="/jspbook/welcome"> <input type="text" name="user" /> <input type="submit" value="submit" /> </form> dohead HEAD dohead() service() HTTP HEAD protected void dohead ( HttpServletRequest request, // Servlet HttpServletResponse response // Servlet HTTP ) throws ServletException, IOException HTTP BAD REQUEST doput PUT doput() service() HTTP PUT protected void doput ( HttpServletRequest request, HttpServletResponse response ) // HttpServletRequest // HttpServletResponse Servlet

70 throws ServletException, IOException FTP HTTP BAD REQUEST dodelete DELETE dodelete() service() HTTP DELETE protected void dodelete ( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException // HttpServletRequest // HttpServletResponse Servlet HTTP BAD REQUEST dotrace TRACE dotrace() service() HTTP TRACE protected void dotrace ( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException // HttpServletRequest // HttpServletResponse Servlet TRACE dooptions OPTIONS dooptions() service() HTTP OPTIONS protected void dooptions ( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException // HttpServletRequest // HttpServletResponse Servlet HTTP Servlet doget() dooptions() Allow: GET, HEAD, TRACE, OPTIONS getinitparameter getinitparameter()

71 getinitparameternames getinitparameternames() getlastmodified getlastmodified() HttpServletRequest protected long getlastmodified ( HttpServletRequest request ) // Servlet HttpServletRequest GMT GET 13.4 ServletRequest ServletRequest Servlet Servlet ServletRequest Servlet service() ServletRequest ServletRequest HttpServletRequest HTTP getattribute getattribute() public Object getattribute ( String name // ) null getattributenames getattributenames() public Enumeration getattributenames ( ) package mil.zcz.jsp.servlet;

72 import java.io.*; import java.util.*; import javax.servlet.*; public class RequestServlet extends GenericServlet public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { request.setattribute("author", "Forrid"); // request.setattribute("version", "1.0"); request.setattribute("copyright", "Copyright 2006 Wildcat Studio"); } } response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); Enumeration e = request.getattributenames(); // String name; out.println("<table border=1>"); out.println("<tr><th> </th><th> </th></tr>"); while (e.hasmoreelements()) { name = e.nextelement().tostring(); out.println("<tr><td align=center><i>"); out.println(name); out.println("</i></td><td>"); out.println(request.getattribute(name)); // out.println("</td><tr>"); } out.println("</table>"); out.close(); web.xml <?xml version="1.0" encoding="iso "?> <web-app xmlns=" xmlns:xsi=" xsi:schemalocation=" version="2.4"> <servlet> <servlet-name>requestservlet</servlet-name> <servlet-class>mil.zcz.jsp.servlet.requestservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>requestservlet</servlet-name> <url-pattern>/request</url-pattern> </servlet-mapping> </web-app> RequestServlet getattribute getattributenames getcharacterencoding getcharacterencoding() public String getcharacterencoding ( ) null

73 public class RequestServlet extends GenericServlet { public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { PrintWriter out = response.getwriter(); request.setcharacterencoding("gb2312"); // out.println(request.getparameter("user")); out.println("(" + request.getcharacterencoding() + ")"); // out.close(); } } JSP welcome.jsp welcome.jsp RequestServlet GB getcontentlength getcontentlength() public int getcontentlength ( ) getcontenttype getcontenttype() MIME public String getcontenttype ( ) null getinputstream getinputstream() public ServletInputStream getinputstream ( ) throws IOException ServletInputStream public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { ServletInputStream sis = request.getinputstream(); byte b[] = new byte[1024]; int len = sis.readline(b, 0, 1024); response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); out.println(" "); out.println(request.getcontenttype()); out.println("</br>"); out.println(" "); out.println(request.getcontentlength()); out.println("<hr>"); // // out.println(" "); for (int i=0; i<len; i++) { out.print(b[i] + " "); }

74 } out.close(); JSP welcome.jsp <B>Please input your name:</b></br> <form method="post" action="/jspbook/request"> <input type="text" name="user" /> <input type="submit" value="submit" /> </form> ServletRequest getinputstream getlocaladdr getlocaladdr() IP public String getlocaladdr ( ) getlocale getlocale() public Locale getlocale ( ) out.println(request.getlocale()); zh_cn getlocales getlocales() public Enumeration getlocales ( ) Enumeration e = request.getlocales(); while (e.hasmoreelements()) { out.println(e.nextelement());

75 } zh_cn getlocalname getlocalname() public String getlocalname ( ) getlocalport getlocalport() public int getlocalport ( ) getparameter getparameter() public String getparameter ( String name // ) null getparametermap getparametermap() public Map getparametermap ( ) java.util.map String getparameternames getparameternames() public Enumeration getparameternames ( ) String

76 getparametervalues getparametervalues() public String[] getparametervalues ( String name // ) String null 1 public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { request.setcharacterencoding("gb2312"); response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); Enumeration e = request.getparameternames(); // String name; out.println("<font size=2 color=red><i>getparameter() getparameternames() </I></font>"); out.println("<table border=1>"); out.println("<tr><th> </th><th> </th></tr>"); while (e.hasmoreelements()) { name = e.nextelement().tostring(); out.println("<tr><td align=center><i>"); out.println(name); out.println("</i></td><td>"); out.println(request.getparameter(name)); // out.println("</td><tr>"); } out.println("</table>"); } String fond[] = request.getparametervalues("fond"); // out.println("<font size=2 color=red><i>getparametervalues() </I></font></br>"); out.println(" "); for (int i=0; i<fond.length; i++) { out.println(" " + fond[i]); } out.println("</br><font size=2 color=red><i>getparametermap() </I></font>"); Map m = request.getparametermap(); // Set s = m.keyset(); Iterator i = s.iterator(); Object key, value; out.println("<table border=1>"); out.println("<tr><th> </th><th> </th></tr>"); while (i.hasnext()) { key = i.next(); value = m.get(key); out.println("<tr><td align=center><i>"); out.println(key.tostring()); out.println("</i></td><td>"); fond = (String[])value; int len = fond.length; out.print(fond[0]); if (len > 1) { for (int j=1; j<len; j++) { out.println(" " + fond[j]); } } out.println("</td><tr>"); } out.println("</table>"); out.close(); JSP reg.jsp <%@ page contenttype="text/html;charset=gb2312" %> <html> <head> <title>registration</title> </head>

77 <FORM METHOD=POST ACTION="/JSPBook/Request"> <INPUT TYPE="text" NAME="id"></br> <INPUT TYPE="password" NAME="pass"></br> <INPUT TYPE="checkbox" NAME="fond" VALUE=" "> <INPUT TYPE="checkbox" NAME="fond" VALUE=" "> <INPUT TYPE="checkbox" NAME="fond" VALUE=" "> </br> <TEXTAREA NAME="remark" ROWS="5" COLS="25"></TEXTAREA></br> <INPUT TYPE="submit" VALUE=" "> <INPUT TYPE="reset" VALUE=" "> </FORM> ServletRequest getparametervalues

78 getprotocol getprotocol() public String getprotocol ( ) /. HTTP/ getreader Reader getreader() BufferedReader public BufferedReader getreader ( ) throws IOException UnsupportedEncodingException public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); BufferedReader reader = request.getreader(); char buf[] = new char[1024]; int len = reader.read(buf, 0, 1024); for (int i=0; i<len; i++) { out.print(buf[i]); } out.close(); } JSP reg.jsp reg.jsp ServletRequest getreader getrealpath Java Servlet 2.1 API ServletContext. getrealpath(string) getremoteaddr getremoteaddr() IP

79 public String getremoteaddr ( ) getremotehost getremotehost() public String getremotehost ( ) getremoteport getremoteport() public int getremoteport ( ) getrequestdispatcher RequestDispatcher getrequestdispatcher() public RequestDispatcher getrequestdispatcher ( String path // ) RequestDispatcher RequestDispatcher Servlet RequestDispatcher null public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { RequestDispatcher rd = request.getrequestdispatcher("/greet"); rd.forward(request, response); } ServletRequest getrequestdispatcher getscheme getscheme()

80 public String getscheme ( ) HTTP FTP HTTPS HTTP getservername getservername() public String getservername ( ) getserverport getserverport() public int getserverport ( ) public void service(servletrequest request, ServletResponse response) throws ServletException, IOException { response.setcontenttype("text/html;charset=gb2312"); PrintWriter out = response.getwriter(); out.println("<table border=1>"); out.println("<tr><th> </th><th> </th></tr>"); out.println("<tr><td>getlocaladdr</td><td>"); out.println(request.getlocaladdr()); out.println("</td></tr>"); out.println("<tr><td>getlocalname</td><td>"); out.println(request.getlocalname()); out.println("</td></tr>"); out.println("<tr><td>getlocalport</td><td>"); out.println(request.getlocalport()); out.println("</td></tr>"); out.println("<tr><td>getremoteaddr</td><td>"); out.println(request.getremoteaddr()); out.println("</td></tr>"); out.println("<tr><td>getremotehost</td><td>"); out.println(request.getremotehost()); out.println("</td></tr>"); out.println("<tr><td>getremoteport</td><td>"); out.println(request.getremoteport()); out.println("</td></tr>"); out.println("<tr><td>getservername</td><td>"); out.println(request.getservername()); out.println("</td></tr>"); out.println("<tr><td>getserverport</td><td>"); out.println(request.getserverport()); out.println("</td></tr>"); out.println("</table>"); out.close(); } 13.9

81 13.9 ServletRequest getserverport issecure issecure() HTTPS public boolean issecure ( ) true false removeattribute removeattribute() public void removeattribute ( String name // ) request.removeattribute("author"); Author setattribute setattribute() public void setattribute ( String name, Object obj ) // // RequestDispatcher() setcharacterencoding setcharacterencoding() public void setcharacterencoding ( String env // ) throws UnsupportedEncodingException