struts2入門例子 登陸demo！非常詳細的圖解
阿新 • • 發佈：2019-02-13
1.下載所需的jar包
下載地址：https://struts.apache.org/download.cgi#struts25101
下載完後解壓，在lid資料夾裡面找以下這幾個jar包，基本功能就只需要這些
複製這些jar包到你新建的web專案WebContent/WEB-INF/lib下
右擊你的web專案如圖：
在WEB-INF/lib目錄下有你剛才複製過來的jar包
全部選中點選OK，jar就全部匯入進來了
這是我的整個目錄結構：
接下來就開始下程式碼了
配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <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>
寫DemoLog.java
package com.strtus2.action; import com.opensymphony.xwork2.Action; public class DemoLog implements Action { private String uname; private String upass; @Override public String execute() throws Exception { System.out.println("姓名："+uname); System.out.println("密碼："+upass); if(uname.equals("ykp")&&upass.equals("123")){ return SUCCESS; } return "error"; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public String getUpass() { return upass; } public void setUpass(String upass) { this.upass = upass; } }
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" namespace="/" extends="struts-default"> <action name="login" class="com.strtus2.action.DemoLog"> <result name="success">/Helloworld.jsp</result> <result name="error">/error.jsp</result> </action> </package> </struts>
三個jsp檔案
error.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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>
<h1>登陸出錯</h1>
</body>
</html>Helloword.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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>
<h1>Hello Strtus2！！！！你好</h1>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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>
<form action="login">
使用者名稱:<input type="text" name="uname"><br>
密 碼:<input type="text" name="upass"><br>
<input type="submit" value="登陸" />
</form>
</body>
</html>現在基本完成了 可以執行專案了
我今天剛學習struts2，完成的小Demo，寫片文章記錄一下，希望可以幫助到有需要的人
另外有大牛看發現錯誤的話麻煩請告訴我，謝謝啦！