struts2入门程序

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struts2入门程序

1、示例

搭建编程环境就先不说了，这里假设已经搭建好了编程环境，并且下好了strut2的jar包，接下来程序。

1.1 新建web项目

点击File->New->Dynamic Web Project

填写项目名称，一路Next，最后Finish，然后一个项目就建成了。

1.2 导入jar包，将下载的strut2文件夹下lib文件夹中的这5个jar拷贝到WEB-INF下的lib文件夹下

commons-fileupload-1.2.2.jar

commons-io-2.0.1.jar

commons-lang-2.5.jar

freemarker-2.3.18.jar

javassist-3.11.0.GA.jar

ognl-3.0.4.jar

struts2-core-2.3.1.2.jar

xwork-core-2.3.1.2.jar

1.3 创建java类，先在scr包下创建一个com包，然后再在com包下创建一个java类

package com;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{/** *  */private static final long serialVersionUID = 1L;String usrName;String passWord;String Msg;public String usrLogin() throws Exception{if ( "ztq".equals(usrName) && "ztq".equals(passWord)){Msg = "欢迎成功，欢迎"+usrName;return SUCCESS;}else{Msg = "用户名或密码错误，请重新输入！";return ERROR;}}public String getUsrName() {return usrName;}public void setUsrName(String usrName) {this.usrName = usrName;}public String getPassWord() {return passWord;}public void setPassWord(String passWord) {this.passWord = passWord;}public String getMsg() {return Msg;}public void setMsg(String msg) {Msg = msg;}}

1.4 在WebContent目录下新建文件夹pages，再在pages下面新建三个jsp页面（Index.jsp、Error.jsp、Success.jsp）

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s"%><!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>Index Page</title></head><body><s:form action="ztq/login.do"><label>用户名：</label><input id=usrName name=usrName tabindex="1"/><br/><label>密码：</label><input id=passWord name=passWord type="password" tabindex="2"/><br/><input type="submit" value="登陆"/></s:form></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>Error</title></head><body>${Msg}</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>Welcome</title></head><body>${Msg}</body></html>

1.5 在src包下新建配置struts.xml文件

<?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><constant name="struts.i18n.encoding" value="UTF-8"/><constant name="struts.action.extension" value="action,do"></constant><package name="ztq" namespace="/ztq" extends="struts-default"> <action name="login" class="com.LoginAction" method="usrLogin"><result name="success">/pages/Success.jsp</result><result name="error">/pages/Error.jsp</result></action></package></struts>

1.6 在WebContent\WEB-INF目录下新建配置web.xml文件

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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">  <display-name>SSH</display-name>  <filter>  <filter-name>struts2</filter-name>      <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>    </filter>      <filter-mapping>  <filter-name>struts2</filter-name>  <url-pattern>/*</url-pattern>    </filter-mapping>    <welcome-file-list>    <welcome-file>/pages/Index.jsp</welcome-file>  </welcome-file-list></web-app>

最后如下图：

然后运行程序

输入用户名ztq和密码ztq后

否则