首页 \ 问答 \ 对于与上下文路径关联的命名空间[/ user]和操作名称[user！add]，没有映射的Action(There is no Action mapped for namespace [/user] and action name [user!add] associated with context path)

对于与上下文路径关联的命名空间[/ user]和操作名称[user！add]，没有映射的Action(There is no Action mapped for namespace [/user] and action name [user!add] associated with context path)

 单击index.jsp页面中的URL后，它将返回消息  
There is no Action mapped for namespace [/user] and action name [user!add] associated with context path [/Struts2]. - [unknown location]    

com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:552)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:722)

You are seeing this page because development mode is enabled. Development mode,
or devMode, enables extra debugging behaviors and reports to assist developers.
To disable this mode, set:
   struts.devMode=false
 in your WEB-INF/classes/struts.properties file. 
 
 项目结构：  
 
  /Struts2/WebRoot/WEB-INF/web.xml  
  /Struts2/src/struts.xml  
  /Struts2/WebRoot/index.jsp  
  /Struts2/WebRoot/user_add_success.jsp  
  /Struts2/src/com/bjsxt/struts2/user/action/UserAction.java  
  /Struts2/src/com/bjsxt/struts2/user/model/User.java  
 
 我导入的struts包  
 
  
   /Struts2/WebRoot/WEB-INF/lib/commons-fileupload-1.3.jar  
   /Struts2/WebRoot/WEB-INF/lib/commons-io-2.2.jar  
   /Struts2/WebRoot/WEB-INF/lib/commons-lang3-3.1.jar  
   /Struts2/WebRoot/WEB-INF/lib/commons-logging-1.1.jar  
   /Struts2/WebRoot/WEB-INF/lib/freemarker-2.3.19.jar  
   /Struts2/WebRoot/WEB-INF/lib/javassist-3.11.0.GA.jar  
   /Struts2/WebRoot/WEB-INF/lib/ognl-3.0.6.jar  
   /Struts2/WebRoot/WEB-INF/lib/struts2-core-2.3.16.jar  
   /Struts2/WebRoot/WEB-INF/lib/xwork-core-2.3.16.jar  
  
 
 / Struts2 / WebRoot / WEB-INF / web.xml  
   <?xml version="1.0" encoding="UTF-8"?>
    <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>Struts Blank</display-name>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    </web-app>
 
 / Struts2 / src / struts.xml  
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="user" extends="struts-default" namespace="/user">      
    <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
        <result>/user_add_success.jsp</result>
    </action>
</package>
</struts>
 
 / Struts2 / WebRoot / index.jsp  
<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"  pageEncoding="GB18030"%>
<% 
   String path = request.getContextPath();
   String basePath =request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<head>
<base href="<%=basePath %>"/>
<title>Insert title here</title>
</head>
<body>
   use Domain Model to recieve param <a href="user/user!add?user.name=a&user.age=8">add</a>
</body>
</html>
 
 / Struts2 / WebRoot / user_add_success.jsp  
<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>Insert title here</title>
</head>
<body>
     User Add Success!
</body>
</html>
 
 / Struts2 / src / com / bjsxt / struts2 / user / action / UserAction.java  
package com.bjsxt.struts2.user.action;
import com.bjsxt.struts2.user.model.User;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
private User user;
//private UserDTO userDTO;
public String add() {
    System.out.println("name=" + user.getName());
    System.out.println("age=" + user.getAge());
    return SUCCESS;
}
public User getUser() {
    return user;
}
public void setUser(User user) {
    this.user = user;
}
}
 
 / Struts2 / src / com / bjsxt / struts2 / user / model / User.java  
package com.bjsxt.struts2.user.model;
public class User {
private String name;
private int age;
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public int getAge() {
    return age;
}
public void setAge(int age) {
    this.age = age;
}
}

After clicking on the URL in the index.jsp page, it returns the message  
There is no Action mapped for namespace [/user] and action name [user!add] associated with context path [/Struts2]. - [unknown location]    

com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:552)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.Thread.run(Thread.java:722)

You are seeing this page because development mode is enabled. Development mode,
or devMode, enables extra debugging behaviors and reports to assist developers.
To disable this mode, set:
   struts.devMode=false
 in your WEB-INF/classes/struts.properties file. 
 
Project structure: 
 
 /Struts2/WebRoot/WEB-INF/web.xml 
 /Struts2/src/struts.xml 
 /Struts2/WebRoot/index.jsp 
 /Struts2/WebRoot/user_add_success.jsp 
 /Struts2/src/com/bjsxt/struts2/user/action/UserAction.java 
 /Struts2/src/com/bjsxt/struts2/user/model/User.java 
 
the struts package I import 
 
  
  /Struts2/WebRoot/WEB-INF/lib/commons-fileupload-1.3.jar 
  /Struts2/WebRoot/WEB-INF/lib/commons-io-2.2.jar 
  /Struts2/WebRoot/WEB-INF/lib/commons-lang3-3.1.jar 
  /Struts2/WebRoot/WEB-INF/lib/commons-logging-1.1.jar 
  /Struts2/WebRoot/WEB-INF/lib/freemarker-2.3.19.jar 
  /Struts2/WebRoot/WEB-INF/lib/javassist-3.11.0.GA.jar 
  /Struts2/WebRoot/WEB-INF/lib/ognl-3.0.6.jar 
  /Struts2/WebRoot/WEB-INF/lib/struts2-core-2.3.16.jar 
  /Struts2/WebRoot/WEB-INF/lib/xwork-core-2.3.16.jar 
  
 
/Struts2/WebRoot/WEB-INF/web.xml 
   <?xml version="1.0" encoding="UTF-8"?>
    <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>Struts Blank</display-name>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    </web-app>
 
/Struts2/src/struts.xml 
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="user" extends="struts-default" namespace="/user">      
    <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
        <result>/user_add_success.jsp</result>
    </action>
</package>
</struts>
 
/Struts2/WebRoot/index.jsp 
<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"  pageEncoding="GB18030"%>
<% 
   String path = request.getContextPath();
   String basePath =request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<head>
<base href="<%=basePath %>"/>
<title>Insert title here</title>
</head>
<body>
   use Domain Model to recieve param <a href="user/user!add?user.name=a&user.age=8">add</a>
</body>
</html>
 
/Struts2/WebRoot/user_add_success.jsp 
<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>Insert title here</title>
</head>
<body>
     User Add Success!
</body>
</html>
 
/Struts2/src/com/bjsxt/struts2/user/action/UserAction.java 
package com.bjsxt.struts2.user.action;
import com.bjsxt.struts2.user.model.User;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
private User user;
//private UserDTO userDTO;
public String add() {
    System.out.println("name=" + user.getName());
    System.out.println("age=" + user.getAge());
    return SUCCESS;
}
public User getUser() {
    return user;
}
public void setUser(User user) {
    this.user = user;
}
}
 
/Struts2/src/com/bjsxt/struts2/user/model/User.java 
package com.bjsxt.struts2.user.model;
public class User {
private String name;
private int age;
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public int getAge() {
    return age;
}
public void setAge(int age) {
    this.age = age;
}
}

原文：https://stackoverflow.com/questions/22099647

更新时间：2023-05-13 06:05

最满意答案

 在Greasemonkey（以及Tampermonkey和大多数userscript引擎）中，如果符合@ include，@exclude和/或@match指令， 脚本将自动触发iframe 。 
 而且，一个受欢迎的问题是如何阻止Greasemonkey对iframe进行触发 。  
 所以，如果你的脚本有这样的匹配：  
@match https://fiddle.jshell.net/*
 
 它会在jsFiddle“输出”页面上触发，无论它们是否出现在iframe中。  
 
 如果您想要拍摄JUST iframed内容：  
 然后你会检查window.self属性。 
 例如，假设您有一个目标页面，如：  
<body>
    <h1>I'm some webpage, either same-domain or not.</h1>
    <iframe src="//domain_B.com/somePath/somePage.htm">
...
 
 然后你可以使用如下脚本：  
// ==UserScript==
// @name    _Fires specially on domain_B.com iframes
// @match   *://domain_B.com/somePath/*
// ==/UserScript==

if (window.top === window.self) {
    //--- Script is on domain_B.com when/if it is the MAIN PAGE.
}
else {
    //--- Script is on domain_B.com when/if it is IN AN IFRAME.
    // DO YOUR STUFF HERE.
}

In Greasemonkey (And Tampermonkey and most userscript engines) a script will fire on an iframe automatically if it meets the @include, @exclude, and/or @match directives.
 And, a popular question is how to stop Greasemonkey from firing on iframes. 
So, if your script had a match like: 
@match https://fiddle.jshell.net/*
 
It would fire on jsFiddle "output" pages whether or not they appeared in an iframe. 
 
If you wanted to fire on a JUST iframed content: 
Then you would check the window.self property.
 For example, suppose you had a target page like: 
<body>
    <h1>I'm some webpage, either same-domain or not.</h1>
    <iframe src="//domain_B.com/somePath/somePage.htm">
...
 
Then you could use a script like: 
// ==UserScript==
// @name    _Fires specially on domain_B.com iframes
// @match   *://domain_B.com/somePath/*
// ==/UserScript==

if (window.top === window.self) {
    //--- Script is on domain_B.com when/if it is the MAIN PAGE.
}
else {
    //--- Script is on domain_B.com when/if it is IN AN IFRAME.
    // DO YOUR STUFF HERE.
}
 
 
Important: 
With the release of Greasemonkey 4, iframes handling is severely crippled (and many other things are broken, besides).
 It still works properly with Tampermonkey, Violentmonkey and just about every other userscript engine.
 It is strongly recommended (including by Greasemonkey itself) that you do not use Greasemonkey 4 or later.

对于与上下文路径关联的命名空间[/ user]和操作名称[user！add]，没有映射的Action(There is no Action mapped for namespace [/user] and action name [user!add] associated with context path)

最满意答案

如果您想要拍摄JUST iframed内容：

If you wanted to fire on a JUST iframed content:

Important:

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