Struts2驗證消息出現兩次

enter image description here Struts2驗證消息出現兩次

我正在嘗試struts驗證但錯誤消息正在打印兩次。我的動作類如下.OSAction.java。我在其中使用了休眠。我認爲validate方法被調用了兩次，

package net.ajeet.os.view; 

import java.util.List; 

import net.ajeet.os.controller.OSManager; 
import net.ajeet.os.model.OSDetail; 

import com.opensymphony.xwork2.ActionSupport; 
import com.opensymphony.xwork2.ModelDriven; 


public class OSAction extends ActionSupport { 

    private static final long serialVersionUID = 9149826260758390091L; 
    public OSDetail osdetail= new OSDetail(); 
    private List<OSDetail> osdetails_list; 
    public OSDetail getOsdetail() { 
     return osdetail; 
    } 

    public void setOsdetail(OSDetail osdetail) { 
     this.osdetail = osdetail; 
    } 

    private Long id; 

    private OSManager linkController= new OSManager(); 
/* @Override 
    public OSDetail getModel() { 
     return osdetail; 
    }*/ 
/* public OSAction() { 
     linkController = new OSManager(); 
    } 

    public String execute() { 
     this.osdetails_list = linkController.list(); 
     return SUCCESS; 
    } 

    */ 

    public String add() { 

     try { 

      linkController.add(getOsdetail()); 
      //linkController.add(osdetail); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     this.osdetails_list = linkController.list(); 
     return SUCCESS; 
    } 

    /* public String delete() { 
     linkController.delete(getid()); 
     return SUCCESS; 
    }*/ 

    public List<OSDetail> getOsdetails_list() { 
     return osdetails_list; 
    } 

    public void setOsdetails_list(List<OSDetail> osdetails_list) { 
     this.osdetails_list = osdetails_list; 
    } 

    /* public Long getid() { 
     return id; 
    } 

    public void setid(Long id) { 
     this.id = id; 
    } 
*/ 

    public void validate() 
    { 
     if (osdetail.getOSname() == null || osdetail.getOSname().trim().equals("")) 
     { 
    addFieldError("osdetail.OSname","The OS Name is required"); 

     } 
     if (osdetail.getOSversion() == null || osdetail.getOSversion().trim().equals("")) 
     { 
      addFieldError("osdetail.OSversion","The OS Version is required"); 
     } 
    } 



}

我的index.jsp低於

<%@ page contentType="text/html; charset=UTF-8"%> 
<%@ taglib prefix="s" uri="/struts-tags"%> 
<html> 
<head> 
    <title>OS Manager - Struts2 Hibernate Example</title> 
</head> 
<body> 
  
<h1>OS Manager</h1> 
<s:actionerror/> 
  
<s:form action="add" method="post" > 
<s:hidden name="OSid" value="%{id}" /> 
    <s:textfield name="osdetail.OSname" label="name" /> 
    <s:textfield name="osdetail.OSversion" label="version"/> 
    <s:textfield name="osdetail.OSnotes" label="notes"/> 
    <s:submit value="Add OS Details" align="center"/> 
    <s:reset value="Reset" /> 

</s:form> 
  
  
<h2>OS Details</h2> 
<table> 
<tr> 
    <th>OS Name</th> 
    <th>OS Version</th> 
    <th>OS Notes</th> 
</tr> 
<s:iterator value="osdetails_list" var="osdetail"> 
    <tr> 
        <td><s:property value="OSname"/></td> 
        <td><s:property value="OSversion"/></td> 
        <td><s:property value="OSnotes"/></td> 
    </tr> 
</s:iterator> 
</table> 
</body> 
</html>

的struts.xml低於

![<?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.enable.DynamicMethodInvocation" 
     value="false" /> 
    <constant name="struts.devMode" value="false" /> 

    <package name="default" extends="struts-default" namespace="/"> 

     <action name="add" 
      class="net.ajeet.os.view.OSAction" method="add"> 
      <result name="success" type="chain">index</result> 
      <result name="input" type="chain">index</result> 
     </action> 


     <action name="index" 
      class="net.ajeet.os.view.OSAction"> 
      <result name="success">index.jsp</result> 
      <result name="input">/index.jsp</result> 
     </action> 



    </package> 
</struts>][2] 
enter code here

來源

2013-07-20 Asmi

這是因爲您使用的是"chain"錯誤結果。除非你知道你在做什麼，否則不要使用它。要修復錯誤，你應該改變這樣的

<action name="add" class="net.ajeet.os.view.OSAction" method="add"> 
    <result type="redirectAction">index</result> 
    <result name="input">/index.jsp</result> 
</action> 

<action name="index" class="net.ajeet.os.view.OSAction"> 
    <result>/index.jsp</result> 
</action>

來源

2013-07-20 11:14:38

非常感謝它的工作。 – Asmi

配置在struts.xml中你行動之前就實施攔截，裁判的名字=「defaultStack」

來源

2013-10-18 23:37:27 Guest

Struts2驗證消息出現兩次

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