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问题： struts的超连接问题，报错http 405，请高手指点描述:
struts-config.xml设置：
先在ListAllUserInfoAction中处理用户信息，然后在ListAllUserInfo.jsp中列出用户信息。
运行时tomcat下报错：
[Error] :0:0: File "http://java.sun.com/JSP/TagLibraryDescriptor"; not found.
java.io.FileNotFoundException: http://java.sun.com/JSP/TagLibraryDescriptor
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:707)
at java.net.URL.openStream(URL.java:960)
at com.commerceone.xdk.xerces.readers.DefaultReaderFactory.createReader(Unknown Source)
at com.commerceone.xdk.xerces.readers.DefaultEntityHandler.startReadingFromdocument．Unknown Source)
at com.commerceone.xdk.xerces.framework.XMLParser.parseSomeSetup(Unknown Source)
at com.commerceone.xdk.xerces.framework.XMLParser.parse(Unknown Source)
at com.commerceone.xdk.xerces.validators.common.XMLValidator.resolveSchemaGrammar(Unknown Source)
at com.commerceone.xdk.xerces.validators.common.XMLValidator.parseSchemas(Unknown Source)
at com.commerceone.xdk.xerces.validators.common.XMLValidator.bindNamespacesToElementAndAttributes(Unknown Source)
at com.commerceone.xdk.xerces.validators.common.XMLValidator.callStartElement(Unknown Source)
at com.commerceone.xdk.xerces.framework.XMLdocument．canner$ContentDispatcher.dispatch(Unknown Source)
at com.commerceone.xdk.xerces.framework.XMLdocument．canner.parseSome(Unknown Source)
at com.commerceone.xdk.xerces.framework.XMLParser.parse(Unknown Source)
at com.commerceone.xdk.uni.parsers.UNIDOMBuilder.getdocument．Unknown Source)
at com.commerceone.xdk.uni.jaxp.UNIDOMBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.document．uilder.parse(document．uilder.java:76)
at org.apache.jasper.parser.ParserUtils.parseXMLdocument．ParserUtils.java:201)
at org.apache.jasper.compiler.TldLocationsCache.parseTldForUri(TldLocationsCache.java:278)
at org.apache.jasper.compiler.TldLocationsCache.tldConfigJar(TldLocationsCache.java:244)
at org.apache.jasper.compiler.TldLocationsCache.processJars(TldLocationsCache.java:210)
at org.apache.jasper.compiler.TldLocationsCache.
at org.apache.jasper.EmbededServletOptions.
at org.apache.jasper.servlet.JspServlet.init(JspServlet.java:265)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:918)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:810)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3279)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3421)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:638)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:343)
at org.apache.catalina.core.StandardService.start(StandardService.java:388)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:506)
at org.apache.catalina.startup.Catalina.start(Catalina.java:781)
at org.apache.catalina.startup.Catalina.execute(Catalina.java:681)
at org.apache.catalina.startup.Catalina.process(Catalina.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243)
[Fatal Error] web-jsptaglibrary_1_1.dtd:104:3: The markup in the document．nbsppreceding the root element must be well-formed.
什么原因？？？
在ie中点击链接显示错误：
Apache Tomcat/4.0.6 - HTTP Status 405 - HTTP method GET is not supported by this URL
type Status report
message HTTP method GET is not supported by this URL
description The specified HTTP method is not allowed for the requested resource (HTTP method GET is not supported by this URL).
刚用struts，不知道什么错误，如何改正？？请朋友指点。