各位进来帮个忙,实在搞不出来了,简单的问题.struts

从错误报告来看，是因为你没在struts的配置文件中指定input属性，该属性是当表单验证失败后的转向页面。在struts的配置文件中的<action....>里加上input="要转向的页面"，你试试吧，我也不太确定

解决方案 »

  1.   

    No input attribute for mapping path ............这个在CONFIG.XML里改
      

  2.   

    我配置了input后,写了个error.jsp
    <%@ page contentType="text/html;charset=UTF-8" language="java"%>
    <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
    <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
    <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>
        <title>error page</title>
      </head>
      <body>
        <html:errors property="aa" />
      </body>
    </html>
    然后重新输入一个http://localhost/getParameter.do   不带参数 
    结果出错了!!!
    HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:207)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:627)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:306)
    at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
    at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
    at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:980)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:696)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
    at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
    at java.lang.Thread.run(Thread.java:534)
    怎么回事!?!??!
      

  3.   

    root cause java.lang.ClassCastException
    at org.apache.struts.taglib.html.ErrorsTag.doStartTag(ErrorsTag.java:215)
    at org.apache.jsp.error_jsp._jspx_meth_html_errors_0(error_jsp.java:85)
    at org.apache.jsp.error_jsp._jspService(error_jsp.java:62)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:92)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:162)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:627)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:306)
    at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
    at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
    at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:980)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:696)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
    at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
    at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
    at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
    at java.lang.Thread.run(Thread.java:534)
      

  4.   

    不带参数的话GetParameterForm得不到aa，如果页面与Form间没有对应，当然会报错。不配置错误页面，还能怎样？怎么显示错误信息？在本页面上的话可以：
    <logic:messagesPresent>
        <html:messages id="error">
            <h5><font  color="red"><bean:write name="error"/></font></h5>
        </html:messages>
    </logic:messagesPresent>
    并在Form上加validate
      

  5.   

    1、为什么你不从页面里面进去 然后提交 而自己写一个地址直接带参数
    带了参数自然没有问题 但是不带参数就会出问题了 
    如果你从页面里面输入数据 然后提交应该就不会出问题了2、如果你想从url里面带参数到action里面去 
    直接在action里面用request。getparameter 就行了3、struts虽然提供了框架  但是并不一定在每一个地方都要用到它的东西，struts也没有强制要求你一定得怎样怎样  选择其中对你方便的功能就行 4 框架这个东西是为了让你用的爽 用起来方便  所以我们有时候会选择多种框架  不要让他束缚你的思维  不方便的地方就不要 
      

  6.   

    我的配置文件代码
    struts-config.xml
    :<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
    <struts-config>
       <data-sources />
       <form-beans >
          <form-bean name="getParameterForm" type="test.form.GetParameterForm" />
       </form-beans>   <global-exceptions />
       <global-forwards >
          <forward
             name="success"
             path="http://192.168.100.177/"
             redirect="true" />
          <forward
             name="fail"
             path="http://192.168.100.169/test/test.asp"
             redirect="true" />
       </global-forwards>   <action-mappings >
          <action
             name="getParameterForm"
             path="/getParameter"
             scope="request"
             validate="true"
             type="test.action.GetParameterAction"
             input="/error.jsp" />
       </action-mappings>   <message-resources parameter="test.ApplicationResources" />
    </struts-config>
      

  7.   

    引入了!!!不过是再web.xml里,
    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
       <servlet>
          <servlet-name>action</servlet-name>
          <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
          <init-param>
             <param-name>config</param-name>
             <param-value>/WEB-INF/struts-config.xml</param-value>
          </init-param>
          <init-param>
             <param-name>debug</param-name>
             <param-value>3</param-value>
          </init-param>
          <init-param>
             <param-name>detail</param-name>
             <param-value>3</param-value>
          </init-param>
          <load-on-startup>0</load-on-startup>
       </servlet>
       <servlet-mapping>
          <servlet-name>action</servlet-name>
          <url-pattern>*.do</url-pattern>
       </servlet-mapping>
       
       <taglib>
          <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
          <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
       </taglib>
       <taglib>
          <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
          <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
       </taglib>
       <taglib>
          <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
          <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
       </taglib>
    </web-app>
      

  8.   


    to numen_wlm(阿木)  :
    我发到你的邮箱了,谢谢你[email protected] 是我的!      发了两遍,请接收!
      

  9.   

    No input attribute for mapping path /loginAction
    错误信息 No input attribute for mapping path /xxxxAction
    可能原因
    No input attribute in action mapping in struts-config.xml file for the action with the name specified in the error message. An input attribute is not required if form validation is not performed (either because the validate attribute is set to false or because the validation method in the relevant form class is not implemented. The input attribute specifies the page leading to this action because that page is used to display error messages from the form validation.