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struts2 简单登录校验示例

發布時間：2024/4/30 编程问答 35 豆豆

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一、實驗目的

理解并掌握業務控制類創建的不同方式。

理解struts.xml中action配置各屬性的作用以及result配置參數作用。

二、實驗內容

采用不同業務控制類定義方式實現Login原型。

深入理解struts.xml配置文件作用。

三、實驗步驟及代碼

采用struts2框架實現Login原型，業務控制類實現方式：直接實現（CheckAccount、CheckAccountI）、

實現Action接口(CheckAccountII)、繼承父類ActionSupport(CheckAccountIIII)。

login.jsp

<body><form action="login" method="post">UserName:<input name="account.username"/><br/>PassWord:<input type="password" name="account.password"/><br/><input type="submit" name="submit" value="submit"/></form></body>

CheckAccount.java

package com.util.login; public class CheckAccount {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;}public String execute(){if(username.equals("zhangsan") && password.equals("123")){return "success";} else {return "error";}} }

CheckAccountI.java (JavaBean封裝)

package com.util.login;public class CheckAccountI {private Account account;public Account getAccount() {return account;}public void setAccount(Account account) {this.account = account;}public String execute(){if(account.getUsername().equals("zhangsan") && account.getPassword().equals("123")){return "success";} else {return "error";}} }

CheckAccountII.java (實現Action接口)

package com.util.login; import com.opensymphony.xwork2.Action; public class CheckAccountI implements Action {private Account account;public Account getAccount() {return account;}public void setAccount(Account account) {this.account = account;}public String execute() throws Exception {if(account.getUsername().equals("zhangsan") && account.getPassword().equals("123")){return SUCCESS;} else {return ERROR;}} }

CheckAccountIII.java (繼承ActionSupport)

package com.util.login; import com.opensymphony.xwork2.ActionSupport; public class CheckAccountII extends ActionSupport{private Account account;public Account getAccount() {return account;}public void setAccount(Account account) {this.account = account;}@Overridepublic String execute() throws Exception {if(account.getUsername().equals("zhangsan") && account.getPassword().equals("123")){return "success";} else {return "error";}} }
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><base href="<%=basePath%>"><title>My JSP 'Login.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"></head><%@taglib uri="/struts-tags" prefix="s" %><body ><center><form action="sub" method="get">用戶登錄：<br>用戶名：<input name="name" type="text"><br>密碼：<input name="psd" type="text"><br><input type="submit" value="提交"><br><input type="reset" value="重置"></form></center></body> </html> welcome.jsp <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><html><head></head><body>登錄成功！！！！ ${name}<br></body> </html>

配置文件 web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" 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_3_0.xsd"><display-name></display-name> <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><?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts><package name="default" namespace="/" extends="struts-default"><action name="sub" class="com.tj.struts.demo.checkAction" method="check"><result name="success">/welcome.jsp</result><result name ="error">/Login.jsp</result></action></package> </struts>
<url-pattern>/*</url-pattern> </filter-mapping> <servlet> <description>This is the description of my J2EE component</description> <display-name>This is the display name of my J2EE component</display-name> <servlet-name>checkAction</servlet-name> <servlet-class>com.tj.struts.demo.checkAction</servlet-class></servlet> <servlet-mapping> <servlet-name>checkAction</servlet-name> <url-pattern>/checkAction</url-pattern> </servlet-mapping></web-app>

sttuts.xml

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts><package name="default" namespace="/" extends="struts-default"><action name="sub" class="com.tj.struts.demo.checkAction" method="check"><result name="success">/welcome.jsp</result><result name ="error">/Login.jsp</result></action></package> </struts>

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