Java Struts2:没有为与上下文路径关联的命名空间[/]和操作名称[]映射的操作

我是Struts2新手。很抱歉，我已经尝试了StackOverflow上已经建议过的不同解决方案，它们都不起作用。 我遵循了这些教程的说明： 有人能帮我吗

这就是错误：

AVVERTENZA: Could not find action or result: /HelloWordStrut2/hello?name=aaa
There is no Action mapped for namespace [/] and action name [hello] associated with context path [/HelloWordStrut2]. - [unknown location]
    at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
    at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
    at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
    at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:554)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

这是我的工作区：

My struts.xml：

   <?xml version="1.0" encoding="UTF-8"?>
<struts>
<constant name="struts.devMode" value="true" />
<package name="helloworld" extends="struts-default">
<action name="hello" class="com.tutoriaspoint.struts2.HelloWordAction"
        method="execute">
<result name="success">HelloWord.jsp</result>
</action>       
</package>
</struts>

---

只需将struts.xml从

name=“helloworld”

更改为

name=“default”

，并添加

namespace=“/”

或者你可以使用下面的一个

<?xml version="1.0" encoding="UTF-8"?>
<struts>
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">
<action name="hello" class="com.tutoriaspoint.struts2.HelloWordAction"
        method="execute">
<result name="success">HelloWord.jsp</result>
</action>       
</package>
</struts>

HelloWord.jsp

您已经映射了

成功

，但返回了

成功

。另外，考虑到信息技术的原因，我将替换所有的结果：在“OK”中更改了结果名，Ma的错误总是相同的。对不起，我不知道为什么我总是省略'L'：）添加操作扩展，比如hello。action@SaraMaffettone在src中创建一个名为文件夹的资源，并将struts.xml放在那里，然后尝试一下，您在URL中添加了哪些jar？？？@saramafetone。不确定不能在

src

下添加文件夹是什么意思，关键是部署后

struts.xml

应该位于类路径的根。使用Maven处理依赖项和项目文件结构要容易得多。

package com.tutoriaspoint.struts2;


public class HelloWordAction    {


    private String name;

    public String getName(){
        return name;
    }
    public void setName(String name){
        this.name=name;
        }
    public String execute() throws Exception {
        return "succes";
        }
}

<?xml version="1.0" encoding="UTF-8"?>
<struts>
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">
<action name="hello" class="com.tutoriaspoint.struts2.HelloWordAction"
        method="execute">
<result name="success">HelloWord.jsp</result>
</action>       
</package>
</struts>