Exception occurred during processing request: null seeking help Daniel

Help me find the rookie Daniel it really does not know that there is a problem





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configuration file header information is not

 
 
Should be 
 
 
 
"- / / Apache Software Foundation / / DTD Struts Configuration 2.0 / / EN" 
"Http://struts.apache.org/dtds/struts-2.0.dtd"> 

 
You are 
 
 

 
One less s 
 

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addition to your namespace = "/ hello".
your form in the form of action can not be hello it. You can change the namespace = "/", or action = "hello.hello"
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if namespace = "/" then hello.action
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Since you changed over the namespace to "/", then the form of the action = "hello.action" a.
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are you seeing this
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strong Oh this I change overnight, 3L proposal also heard, but still the same error amount, why
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Here I also changed, but still the same error
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I affix bar codes in order to facilitate

 package com; 

 
public class HelloAction { 

 
private String message; 
public String getMessage () 
 
{ 
return message; 
} 
 
public void setMessage (String message) 
 
{ 
this.message = message; 
} 
 
public String execute () 
 
{ 
System.out.println ("............"); 
if ((this.message.equals ("")) | | (this.message == null)) 
 
{ 
message = "Please enter the greeting"; 
} 
 
return "success"; 

 
} 
 
} 
 

  
 
"- / / Apache Software Foundation / / DTD Struts Configuration 2.0 / / EN" 
"Http://struts.apache.org/dtds/struts-2.0.dtd"> 
 
 

 
 
 / hello.jsp  
 
 
 

  
 
  
 
 
 index.jsp  
 
 
 struts2Filter  
 
org.apache.struts2.dispatcher.FilterDispatcher 
 
 
 
 
 struts2Filter  
 / *  
 
 

 <% @ page language = "java" import = "java.util. *" pageEncoding = "utf-8"%> 
<% @ Taglib prefix = "s" uri = "/ struts-tags"%>