一个简单的Struts2的使用示例，主要功能是检查用户从jsp页面中输入的用户名是否与密码一致。
首先是jsp部分的代码。jsp页面做了一个form表单的请求，和AJAX的请求。
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head>10 <base href="<%=basePath%>">11 12 <title>Hello Struts2</title>13 <meta http-equiv="pragma" content="no-cache">14 <meta http-equiv="cache-control" content="no-cache">15 <meta http-equiv="expires" content="0"> 16 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">17 <meta http-equiv="description" content="This is my page">18 <!--19 <link rel="stylesheet" type="text/css" href="styles.css">20 -->21 <script src='/images/loading.gif' data-original="./dist/jquery-2.0.0.min.js"></script>22 <style type="text/css">23 input{24 width:100%25 }26 </style>27 </head>28 29 <body>30 <h1>Hello Struts2</h1>31 <div>32 <h2>Form表单</h2>33 <form action="UserLoginAction.action">34 <table>35 <tr>36 <td>用户名：</td><td><input type="text" name="username"></td>37 </tr>38 <tr>39 <td>密码：</td><td><input type="password" name="password"></td>40 </tr>41 <tr><td><input type="submit" value="提交"></td></tr>42 </table>43 </form>44 </div>45 <div>46 <h2>AJAX调用</h2>47 <table>48 <tr><td>用户名：</td><td><input id="usernames"></td></tr>49 <tr><td>密码：<td><input id="passwords" type="password"></td></tr>50 <tr><td><button onclick="check()">提交</button></td></tr>51 </table>52 53 </div>54 55 </body>56 57 <script type="text/javascript">58 function check(){59 $.post("/UserLoginStruts2/UserLoginAction2.action",{60 password:document.getElementById("passwords").value,61 username:document.getElementById("usernames").value,62 63 },function(data,status){64 alert(data);65 });66 }67 </script>68 69 </html>View Code
form表单请求action后，根据结果进行跳转，两个跳转页面的代码。
1 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head>10 <base href="<%=basePath%>">11 12 <title>My JSP 'fail.jsp' starting page</title>13 14 <meta http-equiv="pragma" content="no-cache">15 <meta http-equiv="cache-control" content="no-cache">16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">18 <meta http-equiv="description" content="This is my page">19 <!--20 <link rel="stylesheet" type="text/css" href="styles.css">21 -->22 23 </head>24 25 <body>26 Fail <br>27 </body>28 </html>
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1 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head>10 <base href="<%=basePath%>">11 12 <title>My JSP 'result.jsp' starting page</title>13 14 <meta http-equiv="pragma" content="no-cache">15 <meta http-equiv="cache-control" content="no-cache">16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">18 <meta http-equiv="description" content="This is my page">19 <!--20 <link rel="stylesheet" type="text/css" href="styles.css">21 -->22 23 </head>24 25 <body>26 TRUE27 </body>28 </html>
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form表单的请求会根据结果进行跳转；利用AJAX请求，会将判断结果，返回给jsp页面，并提示。
然后是两个Action部分的代码。
form表单所请求的action代码
1 package struts; 2 3 import com.opensymphony.xwork2.ActionSupport; 4 5 public class UserLoginAction extends ActionSupport{ 6 private String username,password; 7 8 @Override 9 public String execute() throws Exception {10 System.out.println("Checking...");11 if(this.username.equals(this.password)){12 return "Success";13 }else{14 return "Fail";15 }16 }17 18 public String getUsername() {19 return username;20 }21 22 public void setUsername(String username) {23 this.username = username;24 }25 26 public String getPassword() {27 return password;28 }29 30 public void setPassword(String password) {31 this.password = password;32 }33 34 35 36 }View Code
AJAX所请求的Action代码
1 package struts; 2 3 import org.apache.struts2.ServletActionContext; 4 5 import com.opensymphony.xwork2.ActionSupport; 6 7 public class UserLoginAction2 extends ActionSupport{ 8 private String username,password; 9 10 @Override11 public String execute() throws Exception {12 System.out.println("Checking2...");13 System.out.println(password);14 System.out.println(username);15 System.out.println(password.equals(username));16 String str= this.password.equals(this.username)?"Success":"Fail";17 ServletActionContext.getResponse().getWriter().print(str);18 return null;19 }20 21 public String getUsername() {22 return username;23 }24 25 public void setUsername(String username) {26 System.out.println("SET:"+username);27 this.username = username;28 }29 30 public String getPassword() {31 return password;32 }33 34 public void setPassword(String password) {35 this.password = password;36 }37 38 39 40 }View Code
Struts的配置文件。
1 <??> 2 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> 3 <struts> 4 5 <package name="struts" namespace="/" extends="struts-default"> 6 <action name="UserLoginAction" class="struts.UserLoginAction"> 7 <param name="username">default</param> 8 <param name="password">defaults</param> 9 <result name='Fail'>/fail.jsp</result><result name='Success'>/true.jsp</result></action>10 <action name="UserLoginAction2"11 class="struts.UserLoginAction2">12 <param name="username"></param>13 <param name="password"></param>14 </action></package></struts>
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WEB的配置文件。
1 <??> 2 <web-app ="http://www.w3.org/2001/ ="http:// xsi:schemaLocation="http:// version="3.1"> 3 <display-name>UserLoginStruts2</display-name> 4 <filter> 5 <filter-name>struts2</filter-name> 6 <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> 7 </filter> 8 <filter-mapping> 9 <filter-name>struts2</filter-name>10 <url-pattern>*.action</url-pattern>11 </filter-mapping>12 </web-app>
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通过这个实例，主要是为了熟悉Struts2的基本流程，利用MyEclipse2014开发Struts2的项目还是很方便的。只需要将所需要的Action写好，同时在struts.
作为初学者，代码中有什么漏洞或者不规范的地方，希望给位大牛多多指教！！！
原标题：Struts2的入门示例
关键词：Struts
我知道了 