Struts2简单实例开发

冷不防 2022-05-13 15:16 278阅读 0赞

\#\#Struts2简单实例开发

1.下载struts2  
2.建立项目，导入struts2的jar包  
3.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
             version="4.0">
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        
        <welcome-file-list>
            <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    </web-app>

4.编写Action类

package com.controller;
    
    import com.opensymphony.xwork2.ActionSupport;
    
    public class FirstAction extends ActionSupport {
        
    
        //用来接收表单提交的数据，需要get,set方法
        private String userName;
        private String password;
    
        public String getUserName() {
        
            return userName;
        }
    
        public String getPassword() {
        
            return password;
        }
    
        public void setUserName(String userName) {
        
            this.userName = userName;
        }
    
        public void setPassword(String password) {
        
            this.password = password;
        }
    
        //重写execute方法
        @Override
        public String execute() throws Exception {
        
    
            //模拟数据库查询，验证用户名及密码
            if(userName.equals("LeBron")){
        
                if(password.equals("123456")){
        
                    return "ok";
                }else{
        
                    return "fail";
                }
            }else{
        
                return "fail";
            }
        }
    }

5.创建并配置struts.xml

<?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="default" extends="struts-default">
    
            <action name="welcome" class="com.controller.FirstAction">
            <result name="ok">/welcome.jsp</result>
            <result name="fail">/index.jsp</result>
            </action>
    
        </package>
    </struts>

6.编写用户登录界面

<%--
      Created by IntelliJ IDEA.
      User: yangxuechen
      Date: 2018/10/25
      Time: 7:59
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
      <head>
        <title>$Title$</title>
      </head>
      <body>
    
      <form action="welcome.action">
        用户名：<input type="text" name="userName"><br>
        密  码：<input type="password" name="password"><br>
        <input type="submit" value="登陆">
      </form>
      </body>
    </html>

如果登录成功，则返回welcome.jsp,内容如下

<%--
      Created by IntelliJ IDEA.
      User: yangxuechen
      Date: 2018/10/25
      Time: 8:35
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>welcome</title>
    </head>
    <body>
    <b>欢迎，登录成功!</b>
    </body>
    </html>

否则返回index.jsp  
7.部署运行  
![index页面][index]  
![welcome页面][welcome]  
8.获取源码地址[https://github.com/yangxuechen/ssh-learning-example][https_github.com_yangxuechen_ssh-learning-example]

[index]: /images/20220504/be5fefbe0d204f388b4eeda194c7b584.png
[welcome]: /images/20220504/378d84bf0a28476580f7f0db5a1272f8.png
[https_github.com_yangxuechen_ssh-learning-example]: https://github.com/yangxuechen/ssh-learning-example