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Struts2入门实例

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web.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns
="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi
="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation
="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
>
    
<filter>
      
<filter-name>struts2</filter-name>
      
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    
</filter>
    
<filter-mapping>
      
<filter-name>struts2</filter-name>
      
<url-pattern>/*</url-pattern>
    
</filter-mapping>


</web-app>

 srtuts.xml (WEB-INF/classes下)

 

<?xml version="1.0" encoding="GBK" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd"
>

<struts>
    
<package name="struts" extends="struts-default">
       
<action name="Login" class="HelloWorld.LoginAction">
         
<result name="success">/helloworld/welcome.jsp</result>
         
<result name="error">/helloworld/error.jsp</result>
       
</action>
    
</package>
</struts>

 

Action:

 

package HelloWorld;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;

public class LoginAction implements Action...{
  
private String username;
  
private String password;
  
private String[] books;
  
public String[] getBooks() ...{
    
return books;
}

public void setBooks(String[] books) ...{
    
this.books = books;
}

public String execute() throws Exception...{
      
if(this.getUsername().equals("admin")&&this.getPassword().equals("1234"))...{
          ActionContext.getContext().getSession().put(
"user"this.getUsername());
          BookService bs
=new BookService();
          
this.setBooks(bs.getBooks());
          
return SUCCESS;
      }
else...{
          
return ERROR;
      }

  }

public String getUsername() ...{
    
return username;
}

public void setUsername(String username) ...{
    
this.username = username;
}

public String getPassword() ...{
    
return password;
}

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

  
}

 

BookService.java

 

package HelloWorld;

public class BookService ...{
  
private String[] books=new String[]...{
          
"Spring 2.0",
          
"Hibernate 3.2",
          
"Struts 2.0"
  }
;
  
public String[] getBooks()...{
      
return books;
  }

}

 

index.jsp

 

<%...@ page language="java" contentType="text/html; charset=gb2312"
    pageEncoding
="gb2312"
%>
<%...@ taglib prefix="s" uri="/struts-tags" %>
<html>
  
<head> 
    
<title></title>
  
</head>
  
<body>      
     
<s:form action="Login">
       
<s:textfield name="username" label="用户名"></s:textfield>
       
<s:password name="password" label="密码"></s:password>
       
<s:submit value="login"></s:submit>
     
</s:form>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
   
  
</body>
</html>

 

welcome.jsp

 

<%...@ page language="java" contentType="text/html; charset=gb2312"
    pageEncoding
="gb2312"
%>
<%...@ page isELIgnored="false" %>
    
<%...@ taglib prefix="s" uri="/struts-tags" %>
<%...@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
  
<head> 
    
<title></title>
  
</head>
  
<body>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
   欢迎${sessionScope.user}登陆
   
<c:out value="${requestScope.now}"></c:out>
   
<br>
   
<table border="1">
     
<s:iterator value="books" status="index">
         
<s:if test="#index.odd==true">
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评论
1 楼 yinghuayu1324117 2011-04-18  
不错,要是有对每个模块的注释就更好了

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