struts2的配置

1，建立javaee5的web project；在lib包中放入以下几个包

形成的工程结构图如下所示：

2，创建视图页面login.jsp 　　success.jsp　　error.jsp

其中login.jsp的代码如下：

View Code

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="struts" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
    <center>
        <h2>用户登录</h2>
        <struts:form action="login" method="post">
            <struts:textfield name="userName" label="帐号："></struts:textfield>
            <struts:password name="userPsw" label="密码:"></struts:password>
            <struts:submit value="登录"></struts:submit>
        </struts:form>
    </center>

</body>
</html>

success.jsp的代码如下：

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  <body>
    <center><h2>欢迎登录</h2></center><br/>
    当前登录用户：<struts:property value="userName"/>
  </body>

error.jsp的代码如下：

View Code

<body>
    登录失败
  </body>

3，创建Action类LoginAction.java

View Code

package action;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {
    private String userName;
    private String userPsw;
    

    public String getUserName() {
        return userName;
    }


    public void setUserName(String userName) {
        this.userName = userName;
    }


    public String getUserPsw() {
        return userPsw;
    }


    public void setUserPsw(String userPsw) {
        this.userPsw = userPsw;
    }


    /**
     * @return
     */
    public String execute() {
        if(getUserName().equals("123")&& getUserPsw().equals("123")){
            return SUCCESS;
        }

        
        else return ERROR;
    }
}

4,为解决中文乱码问题，创建过滤器：CharacterEncodingFilter.java

View Code

package filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharacterEncodingFilter implements Filter {
    private String characterEncoding;//编码方式在web.xml中
    private boolean enabled;//是否启动filter，初始值在web.xml中
    
    @Override
    public void init(FilterConfig config) throws ServletException {
        // TODO Auto-generated method stub
        //初始化时加载参数
        //从配置文件中读取设置到编码方式
        characterEncoding=config.getInitParameter("characterEncoding");
        //启动该过滤器完成编码方式到修改
        enabled="true".equalsIgnoreCase(characterEncoding.trim())
            ||"1".equalsIgnoreCase(characterEncoding.trim());
        
    }
    
    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        // TODO Auto-generated method stub
        if(enabled||characterEncoding!=null){
            request.setCharacterEncoding(characterEncoding);//设置request编码方式
            response.setCharacterEncoding(characterEncoding);//设置response编码方式
        }
        chain.doFilter(request, response);//doFilter将修改好的request和response参数向下传递；
        
    }

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
        characterEncoding=null;
        
    }
}

5，配置web.xml

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<?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">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <filter>
      <filter-name>struts</filter-name>
      <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
      <init-param>
          <param-name>struts.action.extension</param-name>
          <param-value>action</param-value>
      </init-param>
  </filter>
  <filter-mapping>
      <filter-name>struts</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <filter>
      <filter-name>characterEncodingFilter</filter-name>
      <filter-class>filter.CharacterEncodingFilter</filter-class>
      <init-param>
          <param-name>characterEncoding</param-name>
          <param-value>UTF-8</param-value>
      </init-param>
      <init-param>
          <param-name>enable</param-name>
          <param-value>true</param-value>
      </init-param>
  </filter>
  <filter-mapping>
      <filter-name>characterEncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
  
</web-app>

6，创建资源信息文件struts.properties

View Code

struts.action.extension=action

7,配置struts.xml文件

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<?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>
    

<package name="main" extends="struts-default">
    <action name="login" class="action.LoginAction">
        <result name="error">/error.jsp</result>
        <result name="success">/success.jsp</result>
    </action>
</package>

</struts>

8，发布即可