Struts+Spring+Ajax整合方法学习...

chenclqqrj

Spring2.5
Struts1.3
JQuery1.3.2
1. 业务层服务
package com.chencytttl.service;/** * 用户管理接口. * User: 陈瑞军 * Date: 2009-8-12 * Time: 17:50:41 */public interface UserManage {    /**     * 判断用户是否存在。     * @param userName 用户名     * @return 用户是否存在     */    public abstract boolean userExists(String userName);}
import com.chencytttl.service.UserManage;import java.util.List;import java.util.ArrayList;import org.springframework.stereotype.Service;import javax.annotation.PostConstruct;/** * 用户管理服务. * User: 陈瑞军 * Date: 2009-8-12 * Time: 17:50:59 */@Service("userMessageBean")public class UserMessageBean implements UserManage {    /* 用来存放用户名 */    private List<String> userNames = new ArrayList<String>();    @PostConstruct    public void initUserList() {        userNames.add("chencytttl");        userNames.add("zhangsan");    }    public boolean userExists(String userName) {        if (userNames.contains(userName)) {            return true;        }        return false;    }}
2. Action类
package com.chencytttl.servlet;import com.chencytttl.service.UserManage;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.PrintWriter;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.apache.struts.action.ActionForm;/** * 校验用户是否存在Struts Action. * User: 陈瑞军 * Date: 2009-8-12 * Time: 17:57:37 */@Controller("/validUserExists")public class ValidUserExistsAction extends Action {    @Resource(name = "userMessageBean")    private UserManage userManage;    @Override    public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {        ValidFrom vf = (ValidFrom) actionForm;        boolean isExists = userManage.userExists(vf.getUserName());        PrintWriter out = httpServletResponse.getWriter();        if (!isExists) {            out.append("User not Exists!");        } else {            out.println("Hello" + vf.getUserName());        }        return null;    }}
3.Spring配置文件，Struts配置文件以及Web.xml文件，以及Spring和Struts整合的关键
Spring配置文件(applicationContext.xml)
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">       <context:component-scan base-package="com.chencytttl"></context:component-scan></beans>
Struts配置文件(struts-config.xml)
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts-config PUBLIC        "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"        "http://struts.apache.org/dtds/struts-config_1_3.dtd"><struts-config>    <form-beans>        <form-bean name="validForm" type="com.chencytttl.servlet.ValidFrom"></form-bean>    </form-beans>    <global-exceptions></global-exceptions>    <global-forwards></global-forwards>    <action-mappings>        <action path="/validUserExists" name="validForm" scope="request" type="org.springframework.web.struts.DelegatingActionProxy" validate="true" input="/index.jsp">        </action>    </action-mappings></struts-config>
其中，红色部分是Spring和Struts整合的关键（当然只是整合的一种方式）
web配置文件(web.xml)
<?xml version="1.0" encoding="UTF-8"?><web-app 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"           version="2.5">    <!-- 加载spring的BeanFactory -->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!-- 加载Struts的调度核心 -->    <servlet>        <servlet-name>action</servlet-name>        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>        <init-param>            <param-name>config</param-name>            <param-value>/WEB-INF/struts-config.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>action</servlet-name>        <url-pattern>*.do</url-pattern>    </servlet-mapping></web-app>
4.Jsp页面(index.jsp)
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html>  <head>      <title>Ajax学习</title>      <script type="text/javascript" src="jquery-1.3.2.js"></script>      <script type="text/javascript" src="ajaxstudy.js"></script>  </head>  <body>    <h4>请输入你的姓名:</h4>    <input type="text" id="userNameText" /><span id="result"></span><br/>    <input type="button" value="提交" >  </body></html>
5. JS脚本(ajaxstudy.js)
function valid() {    $.ajax({        url:'validUserExists.do',        type:'get',        data:'userName=' + $("#userNameText").val(),        error: function() {            alert("error");        },        success: function(data) {            $("#result").text(data).css("color", "blue");        }    });}