struts2中错误处理

定义一个 package，然后其他package都继承 这个package    

struts-global

就 有了这个错误处理功能了

 

然后再自己写个类

struts.xml

 1     <constant name="struts.devMode" value="true" />

 2     <constant name="struts.enable.DynamicMethodInvocation" value="false"></constant>

 3     <!-- <constant name="struts.custom.i18n.resources" value="itcast"></constant> -->

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

 5         <global-results>

 6             <result name="errHandler" type="chain">

 7                 <param name="actionName">errorProcessor</param>

 8             </result>

 9         </global-results>

10         <global-exception-mappings>

11             <exception-mapping result="errHandler" exception="java.lang.Exception">

12             </exception-mapping>

13         </global-exception-mappings>

14         

15         <action name="errorProcessor" class="cn.itcast.sh.error.ErrorProcess">

16         

17             <result>error.jsp</result>

18         </action>

19     </package>

cn.itcast.sh.error.ErrorProcess类

 1 package cn.itcast.sh.error;

 2 

 3 import com.opensymphony.xwork2.ActionContext;

 4 import com.opensymphony.xwork2.ActionSupport;

 5 

 6 public class ErrorProcess extends ActionSupport {

 7     private Exception exception;

 8 

 9     public Exception getException() {

10         return exception;

11     }

12 

13     public void setException(Exception exception) {

14         this.exception = exception;

15     }

16     @Override

17     public String execute()

18     {

19         ActionContext.getContext().getValueStack().push(this.exception.getMessage());

20         return this.SUCCESS;

21     }

22 }

 

 

 

其他 strut.xml中

 1 <?xml version="1.0" encoding="utf-8"?>

 2    <!DOCTYPE struts PUBLIC

 3     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

 4     "http://struts.apache.org/dtds/struts-2.3.dtd">

 5 <struts>

 6     <package name="user" namespace="/" extends="struts-global">

 7         <action name="UserAction_*" method="{1}" class="cn.itcast.sh.action.UserAction">

 8             <result name="userList">/user/list.jsp</result>

 9         </action>

10         

11 

12     </package>

13 </struts>

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