操作:struts2中直接访问jsp (此jsp页面含有struts2标签)
会报异常:The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag.
环境:struts2
原因:如果想要在jsp文件中,采用 struts的tag,那么jsp必须是通过action跳转得到,也就是必须通过web.xml所配置的过滤器访问文件,否则会有异常。
解决方案:方案一:采用 http://ip:port/SayHello.action 访问方案二:将web.xml 的过滤器,从 *.action 修改为: /*方案三:修改SayHello.jsp 文件,不使用 struts 的标签。除了以上方案,还有什么更好的方案??????????????
会报异常:The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag.
环境:struts2
原因:如果想要在jsp文件中,采用 struts的tag,那么jsp必须是通过action跳转得到,也就是必须通过web.xml所配置的过滤器访问文件,否则会有异常。
解决方案:方案一:采用 http://ip:port/SayHello.action 访问方案二:将web.xml 的过滤器,从 *.action 修改为: /*方案三:修改SayHello.jsp 文件,不使用 struts 的标签。除了以上方案,还有什么更好的方案??????????????
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这样呢 /*.action
有的 起码我遇到过、如果你试着 起名为/static的文件夹、
比如/static/a.html
引入里面的东西 肯定就会找不到
因为被struts给过了、
必须action跳、硬性规定了、
要么引用静态html
要么动态的就必须跳action
这样改的话,tomcat会报错
严重: Parse error in application web.xml file at jndi:/localhost/struts22/WEB-INF/web.xml
java.lang.IllegalArgumentException: Invalid <url-pattern> /*.action in filter mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2806)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2832)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1774)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1642)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1076)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4540)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
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:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2012-4-13 12:00:05 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Occurred at line 30 column 19
2012-4-13 12:00:05 org.apache.catalina.startup.ContextConfig start
严重: Marking this application unavailable due to previous error(s)
2012-4-13 12:00:05 org.apache.catalina.core.StandardContext start
严重: Error getConfigured
2012-4-13 12:00:05 org.apache.catalina.core.StandardContext start
严重: Context [/struts22] startup failed due to previous errors