IDEA中Struts2的配置使用

旧城等待， 2022-04-03 13:10 231阅读 0赞

### IDEA中Struts2的配置使用 ###

*  1.首先创建JavaEE Web Application项目，勾选Struts2，Libraries选择Set up library later。（有struts2 jar包的前提下，没有jar包选择Download）

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*  2.项目目录结构

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*  3.把lib包中struts2的所有jar包选中，右键，选择Add as Library

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*  4.Ctrl+Alt+Shift+s打开项目结构，进行配置

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*  5.一个简单的struts2 example
 *  5.1修改WEB-INF下的web.xml配置文件

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.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>

*  5.2编写控制器Action类LoginAction

LoginAction.java

package pers.wpc.controller;
    
    import com.opensymphony.xwork2.Action;
    import com.opensymphony.xwork2.ActionContext;
    
    public class LoginAction implements Action {
        @Override
        public String execute() throws Exception {
            if (getUsername().equals("root")&&getPassword().equals("root")){
                ActionContext.getContext().getSession().put("user",getUsername());
                ActionContext.getContext().getSession().put("password",getPassword());
                return "success";
            }else{
                return "error";
            }
        }
        private String username;
        private String password;
    
        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;
        }
    }

*  5.3在src下创建struts.xml并进行配置

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
    
    <!DOCTYPE struts PUBLIC
            "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
            "http://struts.apache.org/dtds/struts-2.3.dtd">
    
    <struts>
        <package name="pers.wpc.controller" extends="struts-default">
            <action name="Login" class="pers.wpc.controller.LoginAction">
                <result name="error">/error.jsp</result>
                <result name="success">/welcome.jsp</result>
            </action>
        </package>
    </struts>

*  5.4在web目录下分别编写login.jsp,welcome.jsp和error.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>用户登录界面</title>
    </head>
    <body>
        <form action="Login.action" method="post">
            <table align="center">
                <caption><h3>用户登录</h3></caption>
                <tr>
                    <td>用户名：<input type="text" name="username"></td>
                </tr>
                <tr>
                    <td>密   码：<input type="text" name="password"></td>
                </tr>
                <tr align="center">
                    <td colspan="2">
                        <input type="submit" value="登录">
                        <input type="reset" value="重填">
                    </td>
                </tr>
            </table>
        </form>
    </body>
    </html>

welcome.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>登录成功</title>
    </head>
    <body>
        ${sessionScope.user},您好!<br>
        欢迎您登录!<br>
        您的密码是:${sessionScope.password}<br>
    </body>
    </html>

error.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>登录失败</title>
    </head>
    <body>
        页面正在维护中......
    </body>
    </html>

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