为什么我在 Struts 2 应用程序中没有为操作定义结果答案

【问题标题】：Why am I getting No result defined for action in Struts 2 application为什么我在 Struts 2 应用程序中没有为操作定义结果
【发布时间】：2014-01-09 06:48:28
【问题描述】：

目前我是 struts 2 的新手，但我知道但当我尝试在 struts 中执行验证时，我在我的 struts 2 示例中遇到问题，这是一个自定义验证示例。所有代码如下：

index.jsp

  <%-- 
    Document   : index
    Created on : Jan 9, 2014, 10:58:52 AM
    Author     : manoj.sharma
--%>

<%@ taglib uri="/struts-tags" prefix="s" %>  
<s:form action="register">  
    <s:textfield name="name" label="Name"></s:textfield>  
    <s:password name="password" label="Password"></s:password>  
    <s:submit value="register"></s:submit>  
</s:form>

welcome.jsp

    <%-- 
    Document   : welcome
    Created on : Jan 9, 2014, 11:08:37 AM
    Author     : manoj.sharma
--%>

<%@ taglib uri="/struts-tags" prefix="s" %>  
Name:<s:property value="name"/><br/>  
Password:<s:property value="password"/><br/>

RegisterAction.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package com.org.my.action;
import com.opensymphony.xwork2.ActionSupport;
/**
 *
 * @author manoj.sharma
 */
public class RegisterAction extends ActionSupport{  
private String name,password;

    //getters and setters 
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

public void validate() {  
    if(name.length()<1)  
        addFieldError("name","Name can't be blank");  
    if(password.length()<6)  
        addFieldError("password","Password must be greater than 5");  
}  

public String execute(){  
//perform business logic here  
    return "success";  
}  
}

struts.xml

<struts>
    <!-- Configuration for the default package. -->
    <package name="default" extends="struts-default">
        <action name="register" class="com.org.my.action.RegisterAction">  
            <result name="input">/index.jsp</result>
            <result name="success">/welcome.jsp</result>
        </action>  
    </package>
</struts>

请检查代码，让我知道我在这个验证示例中哪里出错了。

tomcat 控制台出错：

No result defined for action com.org.my.action.RegisterAction and result input
    at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:373)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:161)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

Jan 09, 2014 12:20:41 PM com.opensymphony.xwork2.util.logging.jdk.JdkLogger error
SEVERE: Exception occurred during processing request: No result defined for action com.org.my.action.RegisterAction and result input
No result defined for action com.org.my.action.RegisterAction and result input
    at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:373)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:239)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:161)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

感谢所有可以帮助我的人...

【问题讨论】：

请人帮帮我...
你重启你的网络服务器了吗？
我在使用 netbeans7.4 IDE 时已重新启动服务器。但我仍然遇到同样的错误。
我还在等，请有人帮助我。有谁知道这个问题吗？
发布您的部署工件的WEB-INF/lib 的内容。

标签： java jsp validation struts2

【解决方案1】：

我遇到了同样的问题，我解决了这个错误：

您需要在 index.jsp 文件中进行一项更改。改变形式的行动。（一一尝试两个表格行）

<%@ taglib uri="/struts-tags" prefix="s" %>  
    <s:form action="RegisterAction.action">  or  <s:form action="register.action"> 
        <s:textfield name="name" label="Name"></s:textfield>  
        <s:password name="password" label="Password"></s:password>  
        <s:submit value="register"></s:submit>  
    </s:form>

希望它能解决你的问题。

【讨论】：

【解决方案2】：

试试

public class RegisterAction extends ActionSupport{  
    private String name,password;

分离成

public class RegisterAction extends ActionSupport{  
    private String name;
    private String password;

【讨论】：

我也改变了上面描述的结果顺序，但仍然是同样的问题。
并将变量声明为私有字符串名称；在下一行私人字符串密码；但仍然是同样的问题。
WEB-INF/lib 的内容：Struts2 Core 2.3.15 - xwork-core-2.3.15.3.jar Struts2 Core 2.3.15 - struts2-core-2.3.15.3.jar Struts2 Core 2.3。 15 - struts2-convention-plugin2.3.15.3.jar Struts2 核心 2.3.15 - ognl-3.0.6.jar Struts2 核心 2.3.15 - javaassist-3.11.0.GA.jar Struts2 核心 2.3.15 - freemarker-2.3 .19.jar Struts2 核心 2.3.15-commons-lang3-3.1.jar Struts2 核心 2.3.15-commons-io-2.0.1.jar Struts2 核心 2.3.15-commons-fileupload-1.3.jar Struts2 核心 2.3.15 - asm-tree-3.3.jar Struts2 Core 2.3.15 - asm-commons-3.3.jar Struts2 Core 2.3.15 - asm-3.3.jar
我已经解决了我自己的问题，只需将操作名称从 register 更改为 regi，并将 index.jsp 文件中的操作名称从 register 更改为 regi。由于出现此问题，我认为按钮名称和操作名称相同。

【解决方案3】：

检查您的 web.xml。您的 web.xml 有以下过滤器？

<filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>
    <listener>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

【讨论】：

【解决方案4】：

我认为这可能有效。更改您的struts.xml 代码

<struts>
<!-- Configuration for the default package. -->
<package name="default" extends="struts-default">
    <action name="register" class="com.org.my.action.RegisterAction">  
        <result name="input">/index.jsp</result>
        <result name="success">/welcome.jsp</result>
    </action>  
</package>

到

<struts>
<!-- Configuration for the default package. -->
<package name="default" extends="struts-default">
    <action name="register" class="com.org.my.action.RegisterAction">  
        <result name="success">/welcome.jsp</result>
        <result name="input">/index.jsp</result>
    </action>  
</package>

只是改变结果的顺序..先定义success然后input

【讨论】：

结果的顺序无关。
我没有在我的本地系统中尝试过。但我参考了 [Struts2 验证文档](struts.apache.org/release/2.3.x/docs/form-validation.html).. 如果我错了请纠正我检查段落Handle Input Being Returned
这只是一个建议。
No Issue 任何其他建议请告诉我，以便我的演示能够正常工作。

【解决方案5】：

好吧，我想您知道 struts 是如何工作的，并且您已经完成了所有正确的操作，但仍然无法找出您的项目出了什么问题。您正确提及了您的操作类名称并且方法名称是正确的。结果页面设置正确，但仍然失败。我有一件事你应该检查。例如，如果您从网页中获取姓名和年龄，并且在操作类中，您将名称设置为字符串，年龄设置为 int 作为同一类的成员变量或以模型驱动的方式。在用于测试目的的网页中，您已经输入了姓名和年龄的字符。在这种情况下，struts 将检查将字符串作为名称和年龄但无法找到的动作类。因为您创建的操作类将 name 作为 string 并将 age 作为 int。因此抛出 404 错误。

或者你可以试试这个。

我发现更改输入有助于解决此问题。我从一开始就启动了我的 Web 应用程序，对其进行了适当的刷新，它似乎解决了这个问题。

gyakhoe.com

【讨论】：

【解决方案6】：

改变

<struts>
<!-- Configuration for the default package. -->
<package name="default" extends="struts-default">
    <action name="register" class="com.org.my.action.RegisterAction">  
        <result name="input">/index.jsp</result>
        <result name="success">/welcome.jsp</result>
    </action>  
</package>
</struts>

到

<struts>
<!-- Configuration for the default package. -->
<package name="default" namespace="/" extends="struts-default">
    <action name="register" class="com.org.my.action.RegisterAction">  
        <result name="input">/index.jsp</result>
        <result name="success">/welcome.jsp</result>
    </action>  
</package>
</struts>

【讨论】：

【解决方案7】：

改变这个 -

<action name="register" class="com.org.my.action.RegisterAction">

到

 <action name="register" class="com.org.my.action.RegisterAction" method="execute">

在您的 Struts.xml 文件中

谢谢

【讨论】：