J2EE学习笔记——Struts2的部署和使用

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首先在 Struts2官网上下载 struts2的包网址：http://struts.apache.org/download.cgi#struts221

用这个Full Distribution:

struts-2.3.8.-all.zip (76mb) [PGP] [MD5]

解压以后找到 lib里的jar 文件：主要用以下几个：

把这几个包导入你的web网站下的WEB-INF\lib中； Struts部署完成：

下面开始使用新建一个 webproject, 包含以下几项：

首先更改web.xml 文件

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" 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_2_5.xsd">  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>      <!-- 定义struts2的核心Filter -->    <filter>    <filter-name>struts2</filter-name>  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>      </filter>    <!-- 让Struts2的核心Filter拦截所有请求 -->        <filter-mapping>    <filter-name>struts2</filter-name>  <url-pattern>/*</url-pattern>    </filter-mapping>          </web-app>

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Login.jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%><%@taglib prefix="s" uri="/struts-tags"%><%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>Login.jsp</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"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body>   <s:form action="login">      <s:textfield name="username" key="用户名"></s:textfield>   <s:textfield name="password" key="密码"></s:textfield>      <s:submit key="login" value="登陆"></s:submit>         </s:form>  </body></html>

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error.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%><%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 'error.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"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body>  登陆异常！！  </body></html>

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welcome.jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%><%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 'welcome.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"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body>    登陆成功!!  </body></html>

好，然后开始写 LoginAction.java 主要是登录验证用：

package xuyan.struts;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{       //定义封装请求参数的username和password属性private String username;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;}private String password;//定义用户请求的execute方法public String execute()throws Exception{//当用户名为ADMIN  和密码为 1234时  登陆成功if(getUsername().equals("Admin")&&getPassword().equals("1234")){ActionContext.getContext().getSession().put("user", getUsername());return SUCCESS;}else{return  ERROR;}}}

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然后开始写 struts.xml 文件：

<?xml version="1.0" encoding="GBK"?><!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN""http://struts.apache.org/dtds/struts-2.1.7.dtd"><!-- 指定Struts 2配置文件的根元素 --><struts><!-- 指定全局国际化资源文件 --><constant name="struts.custom.i18n.resources" value="mess"/><!-- 指定国际化编码所使用的字符集 --><constant name="struts.i18n.encoding" value="GBK"/><!-- 所有的Action定义都应该放在package下 --><package  name="xuyan.struts" extends="struts-default">  <action  name="login"  class="xuyan.struts.LoginAction" >          <!-- 定义三个逻辑视图和物理资源之间的映射 -->          <result  name="input">/Login.jsp</result>     <result  name="error">/error.jsp</result>     <result  name="success">/welcome.jsp</result>      </action></package></struts>

至此，Struts2的配置和使用已完成，希望对朋友们有帮助！！