没有为命名空间 [/] 映射的操作和与上下文路径关联的操作名称 [登录] [/Struts2Test] [英] There is no Action mapped for namespace [/] and action name [login] associated with context path [/Struts2Test]
问题描述
我是 Struts2 的初学者，我知道这个问题在这里被问过很多次，但我试图解决它并在这里阅读了很多线程，花了 6 个小时仍然无法让它工作.真的需要更多建议...
I'm a beginner of Struts2, I know this question been asked in here much times, but I tried to solve it and read much much threads here, spend 6 hours and still can't get it work. Really need more suggestion...
这是我的包裹:
Struts2Test
+Struts2Test/src
+tw.com.rrstudio.java.test
-TestAction.java
+Struts2Test/build
+Struts2Test/WebContent
+Struts2Test/WebContent/META-INF
+Struts2Test/WebContent/WEB-INF/classes
+Struts2Test/WebContent/WEB-INF/lib
-Struts2Test/WebContent/WEB-INF/spring-context.xml
-Struts2Test/WebContent/WEB-INF/spring-mvc.xml
-Struts2Test/WebContent/WEB-INF/struts.xml
-Struts2Test/WebContent/WEB-INF/struts2-action.xml
-Struts2Test/WebContent/WEB-INF/web.xml
-Struts2Test/WebContent/error.jsp
-Struts2Test/WebContent/index.jsp
-Struts2Test/WebContent/TestAction.jsp
我的 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>Struts2Test</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring-context.xml
/WEB-INF/spring-mvc.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>actionPackages</param-name>
<param-value>tw.com.rrstudio.java.test</param-value>
</init-param>
</filter>
<jsp-config>
<taglib>
<taglib-uri>HTTP://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/lib/tld/c.tld</taglib-location>
</taglib>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<page-encoding>UTF-8</page-encoding>
</jsp-property-group>
</jsp-config>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>10</session-timeout>
</session-config>
</web-app>
还有，struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<!-- struts 2.3.16.3 has problem of security,needing to set DynamicMethodInvocation=false -->
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="false" />
<constant name="struts.objectFactory" value="spring" />
<constant name="struts.action.extension" value="do"/>
<constant name="struts.action.excludePattern" value="/jsp/.*?,/image/.*?,/css/.*?,/js/.*?,.*\.jsp"/>
<package name="default" extends="json-default" ></package>
<package name="Strut2Test" extends="json-default" >
<global-results>
<result name="SystemErrorPage">/WebContent/error.jsp</result>
</global-results>
<action name="login" class="tw.com.rrstudio.java.test.TestAction">
<result name="index">/WebContent/index.jsp</result>
<result name="success">/WebContent/TestAction.jsp</result>
</action>
</package>
</struts>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<META HTTP-EQUIV="Refresh" CONTENT="0;URL=login.action">
<title>Index of Struts2Test</title>
</head>
<body>
<h1>Index of Struts2Test</h1>
<form action="testAction" method="post">
<label for="name">Please enter your name</label><br/>
<input type="text" name="name"/>
<input type="submit" value="Say Hello"/>
</form>
</body>
</html>
服务器是Tomcat 8.0.38，启动没有错误.但是当我访问
The Server is Tomcat 8.0.38, it starts with no error. But when I access
http://127.0.0.1:8080/Struts2Test/http://127.0.0.1:8080/Struts2Test/login
它给了我这个(作为标题)错误，如果我访问
it gives me this(as title) error, and if I access
http://127.0.0.1:8080/Struts2Test/index.jsp
我会得到一个常规的 404 结果.
I will get a regular 404 result.
现在我不知道，欢迎任何建议或提示...
Now I have no idea, any suggestions or tips are welcome...
推荐答案
相关问题:没有为命名空间和与上下文路径关联的操作名称映射的操作
如果您使用 URL 来调用操作，请确保此 URL 映射到 Struts 配置.要解决 URL 映射问题，您可以使用 config-browser 插件.只需将此插件添加到您的项目依赖项中，当它部署时，您可以访问一个网站，该网站向您显示运行时配置以及可用的 URL 以调用该操作.例如，如果您在端口 8080 上本地运行 Tomcat 并将应用程序部署在 context，那么您可以使用
If you use URL to call an action, make sure this URL is mapped to the Struts configuration. To troubleshoot the issue with URL mapping you can use config-browser plugin. Simply add this plugin to your project dependencies and when it's deployed, you can access a website showing you a runtime configuration with available URLs to call the action. For example if you are running Tomcat locally on port 8080 and deployed your application at the context, then you can access the plugin's URL with
http://localhost:8080/[context]/config-browser/index.action
您可以单击侧边栏命名空间下的操作页面上的任何可用操作.另请注意，如果在包中找不到您的操作，则它可能在 default 包中.Struts 会在 default 命名空间中额外搜索不在从 URL 映射的命名空间中的操作.
You can click any action available on the actions page under the namespace on the sidebar. Also note that if your action is not found on the package it might be in the default package. Struts does additional search in the default namespace for the action that is not at the namespace mapped from the URL.
查看 config-browser 插件以调试配置问题.
Check out the config-browser plugin to debug configuration issues.
要将 url 正确映射到操作，需要两个参数:动作名称和命名空间.
To map correctly url to the action two parameters are required: the action name and namespace.
Struts 在启动时加载 xml 配置，它应该知道struts.xml 的位置.默认情况下，它正在查找类路径查找具有已知名称的文件，例如 struts.xml.然后它解析文档并创建运行时配置.此配置用于为操作 url 找到适当的配置元素.如果没有这样在请求期间找到元素，返回 404 错误代码消息:没有为命名空间和操作名称映射操作.
Struts loads xml configuration on startup and it should know the
location of the struts.xml. By default it's looking on classpath to
find a file with known name like struts.xml. Then it parses document
and creates a runtime configuration. This configuration is used to
find appropriate configuration element for the action url. If no such
element is found during request, the 404 error code is returned with
the message: There is no Action mapped for namespace and action name.
此消息还包含用于查找的命名空间和操作名称动作配置.然后你可以检查你的配置设置struts.xml.有时动作名称和命名空间，存储在ActionMapping 指向错误的动作.这些值是确定的通过 ActionMapper 可能有不同的实现，使用通过插件.
Also this message contains a namespace and action names used to find
the action config. Then you can check your configuration settings in
struts.xml. Sometimes the action name and namespace, stored in
ActionMapping point to the wrong action. These values are determined
by the ActionMapper which could have different implementation, used
by plugins.
还有另一个设置可能会影响此映射器，并且映射，但是如果您收到此消息，则要点是相同的，那么 URL 是used 没有在运行时配置中映射任何操作配置.如果你无法意识到您应该使用哪个 URL，您可以尝试config-browser 插件以查看可用的 URL 列表.
There's also another setting that might affect this mapper and mapping, but the point is the same if you get this message then URL is used didn't map any action config in runtime configuration. If you can't realize which URL you should use, you might try config-browser plugin to see the list of URLs available to use.
这篇关于没有为命名空间 [/] 映射的操作和与上下文路径关联的操作名称 [登录] [/Struts2Test]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
