maven+spring+springmvc+mybatis+ajax 框架下实现简单的聊天室

来源：互联网发布：vb object转换编辑：程序博客网时间：2024/06/06 05:58

首先非常感谢SSM框架——详细整合教程这篇博文对框架整合的详细说明和Spring注解学习手札对spring注解的详细解释

搭建完之后刚好看到一本不错的书《锋利的jQuery》，结合最后的例子使用ajax实现了这个简单的聊天室。

1.项目目录创建

controller表示控制层负责同页面数据的传输和页面的跳转，service表示服务层，dao和mapping负责持久层，pojo表示数据传输对象。resources下有jdbc.properties，log4j.properties，spring-mvc.xml，spring-mybatis.xml。另外还有一些日志文件，静态文件，JSP文件。完整目录结构如下：

2.配置pom文件，引入jar包

关于jar包的GroupId，ArtifactId，Version问题，可以在search.maven.org这里进行查找，至于jar包的依赖问题，maven可以直接帮你做到

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.wzy</groupId>  <artifactId>carsmanage</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>carsmanage Maven Webapp</name>  <url>http://maven.apache.org</url>    <properties>        <!-- spring版本号 -->        <spring.version>3.2.4.RELEASE</spring.version>        <!-- mybatis版本号 -->        <mybatis.version>3.2.4</mybatis.version>        <!-- log4j日志文件管理包版本 -->        <slf4j.version>1.6.6</slf4j.version>        <log4j.version>1.2.9</log4j.version>    </properties>    <dependencies>        <dependency>             <groupId>javax.servlet</groupId>             <artifactId>servlet-api</artifactId>             <version>2.5</version>             <scope>provided</scope>         </dependency>        <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->        <dependency>            <groupId>commons-dbcp</groupId>            <artifactId>commons-dbcp</artifactId>            <version>1.2.2</version>        </dependency>         <!-- 上传组件包 -->        <dependency>            <groupId>commons-fileupload</groupId>            <artifactId>commons-fileupload</artifactId>            <version>1.3.1</version>        </dependency>        <dependency>            <groupId>commons-io</groupId>            <artifactId>commons-io</artifactId>            <version>2.4</version>        </dependency>        <dependency>            <groupId>commons-codec</groupId>            <artifactId>commons-codec</artifactId>            <version>1.9</version>        </dependency>        <!-- 映入JSON -->        <dependency>            <groupId>org.codehaus.jackson</groupId>            <artifactId>jackson-mapper-asl</artifactId>            <version>1.9.13</version>        </dependency>        <!-- 格式化对象，方便输出日志 -->        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>fastjson</artifactId>            <version>1.1.41</version>        </dependency>        <dependency>            <groupId>org.apache.tomcat</groupId>            <artifactId>jsp-api</artifactId>            <version>6.0.32</version>            <scope>provided</scope>        </dependency>                <!-- spring核心包 -->        <!-- springframe start -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-oxm</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-tx</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-jdbc</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context-support</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>${spring.version}</version>        </dependency>         <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>${spring.version}</version>        </dependency>        <!-- springframe end -->         <!-- mybatis核心包 -->        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>${mybatis.version}</version>        </dependency>        <!-- mybatis/spring包 -->        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis-spring</artifactId>            <version>1.2.2</version>        </dependency>        <!-- mysql驱动包 -->        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.1.29</version>        </dependency>        <!-- junit测试包 -->        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.11</version>            <scope>test</scope>        </dependency>        <!-- 阿里巴巴数据源包 -->        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>druid</artifactId>            <version>1.0.2</version>        </dependency>         <!-- json数据 -->        <dependency>            <groupId>org.codehaus.jackson</groupId>            <artifactId>jackson-mapper-asl</artifactId>            <version>1.9.13</version>        </dependency>         <!-- 日志文件管理包 -->        <!-- log start -->        <dependency>            <groupId>log4j</groupId>            <artifactId>log4j</artifactId>            <version>${log4j.version}</version>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>            <version>${slf4j.version}</version>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <version>${slf4j.version}</version>        </dependency>        <!-- log end -->    </dependencies>    <build>        <finalName>springmvc</finalName>    </build></project>

3.jdbc配置文件

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://localhost:3306/mydbusername=rootpassword=admin#定义初始连接数initialSize=0#定义最大连接数maxActive=20#定义最大空闲maxIdle=20#定义最小空闲minIdle=1#定义最大等待时长maxWait=60000

4.log4j配置文件

#定义log输出级别log4j.rootLogger=INFO,Console,File#定义日志输出目的地为控制台log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target=System.out#可以灵活地指定日志输出格式，下面一行是指定具体的格式log4j.appender.Console.layout = org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern=[%c] - %m%n#文件大小到达指定尺寸的时候产生一个新的文件  log4j.appender.File = org.apache.log4j.RollingFileAppender#指定输出目录  log4j.appender.File.File = logs/ssm.log#定义文件最大大小  log4j.appender.File.MaxFileSize = 10MB# 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志  log4j.appender.File.Threshold = ALL  log4j.appender.File.layout = org.apache.log4j.PatternLayout  log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

5.spring mybatis配置文件

建立spring-mybatis.xml配置文件，将spring和mybatis整合在一起

<?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:p="http://www.springframework.org/schema/p"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="http://www.springframework.org/schema/beans                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                            http://www.springframework.org/schema/context                            http://www.springframework.org/schema/context/spring-context-3.1.xsd                            http://www.springframework.org/schema/mvc                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    <!-- 自动扫描 -->      <context:component-scan base-package="com.chatroom" />        <!-- 引入配置文件 -->      <bean id="propertyConfigurer"          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">          <property name="location" value="classpath:jdbc.properties" />      </bean>    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"          destroy-method="close">          <property name="driverClassName" value="${driver}" />          <property name="url" value="${url}" />          <property name="username" value="${username}" />          <property name="password" value="${password}" />          <!-- 初始化连接大小 -->          <property name="initialSize" value="${initialSize}"></property>          <!-- 连接池最大数量 -->          <property name="maxActive" value="${maxActive}"></property>          <!-- 连接池最大空闲 -->          <property name="maxIdle" value="${maxIdle}"></property>          <!-- 连接池最小空闲 -->          <property name="minIdle" value="${minIdle}"></property>          <!-- 获取连接最大等待时间 -->          <property name="maxWait" value="${maxWait}"></property>      </bean>        <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->      <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">          <property name="dataSource" ref="dataSource" />          <!-- 自动扫描mapping.xml文件 -->          <property name="mapperLocations" value="classpath:com/chatroom/mapping/*.xml"></property>      </bean>        <!-- DAO接口所在包名，Spring会自动查找其下的类 -->      <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">          <property name="basePackage" value="com.chatroom.dao" />          <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>      </bean>    <!-- 开启事务注解驱动 -->    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->      <bean id="transactionManager"          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">          <property name="dataSource" ref="dataSource" />       </bean> </beans>

6.使用junit测试spring和mybatis整合结果

从这里开始因为要涉及一些编码，同业务联系在一起，以免开始写代码时再推到重来。对于这个简单的聊天室，用户登录是通过数据库访问，聊天信息和在线人员信息放在application中。表数据结构只需要用户名，密码等一些简单的数据即可

6.1 建表

6.2代码

可以mybatis generator自动生成实体类，dao接口，mybatis映射文件使用方法参考这里

service实现类：UserService.java

@Servicepublic class UserService implements IUserService {        @Resource    IUserDao userDao;    @Override    public User getUserById(int userId) {        return userDao.selectByPrimaryKey(userId);    }}

测试类：TestMybatis.java

@RunWith(SpringJUnit4ClassRunner.class)//表示继承了SpringJUnit4ClassRunner类@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})public class TestMyBatis {private static Logger logger = Logger.getLogger(TestMyBatis.class);@Resourceprivate IUserService userService = null;@Testpublic void test1() {User user = userService.getUserById(1);logger.info(JSON.toJSONString(user));}}

6.3测试结果：

[com.test.TestMyBatis] - {"age":22,"id":1,"password":"wzy","userName":"wzy"}

至此spring和mybatis已经整合成功下面开始同springmvc的整合

7.建立spring-mvc.xml配置文件

<?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:p="http://www.springframework.org/schema/p"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="http://www.springframework.org/schema/beans                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                            http://www.springframework.org/schema/context                            http://www.springframework.org/schema/context/spring-context-3.1.xsd                            http://www.springframework.org/schema/mvc                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">      <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->      <context:component-scan base-package="com.chatroom.controller" />     <!--避免IE执行AJAX时，返回JSON出现下载文件 -->      <bean id="mappingJacksonHttpMessageConverter"          class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">          <property name="supportedMediaTypes">              <list>                  <value>text/html;charset=UTF-8</value>              </list>          </property>      </bean>    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->    <!-- 多动作控制器必须有此配置 -->      <bean          class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">          <property name="messageConverters">              <list>                  <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->              </list>          </property>      </bean>    <!-- 定义跳转的文件的前后缀 ，视图模式配置-->      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">          <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->          <property name="prefix" value="/WEB-INF/jsp/" />          <property name="suffix" value=".jsp" />      </bean>        <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->      <bean id="multipartResolver"            class="org.springframework.web.multipart.commons.CommonsMultipartResolver">            <!-- 默认编码 -->          <property name="defaultEncoding" value="utf-8" />            <!-- 文件大小最大值 -->          <property name="maxUploadSize" value="10485760000" />            <!-- 内存中的最大值 -->          <property name="maxInMemorySize" value="40960" />        </bean></beans>

8 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"      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"      version="3.0">      <display-name>Archetype Created Web Application</display-name>      <!-- Spring和mybatis的配置文件 -->      <context-param>          <param-name>contextConfigLocation</param-name>          <param-value>classpath:spring-mybatis.xml</param-value>      </context-param>      <!-- 编码过滤器 -->      <filter>          <filter-name>encodingFilter</filter-name>          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>          <async-supported>true</async-supported>          <init-param>              <param-name>encoding</param-name>              <param-value>UTF-8</param-value>          </init-param>      </filter>      <filter-mapping>          <filter-name>encodingFilter</filter-name>          <url-pattern>/*</url-pattern>      </filter-mapping>      <!-- Spring监听器 -->      <listener>          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>      </listener>      <!-- 防止Spring内存溢出监听器 -->      <listener>          <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>      </listener>        <!-- Spring MVC servlet -->      <servlet>          <servlet-name>SpringMVC</servlet-name>          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>          <init-param>              <param-name>contextConfigLocation</param-name>              <param-value>classpath:spring-mvc.xml</param-value>          </init-param>          <load-on-startup>1</load-on-startup>          <async-supported>true</async-supported>      </servlet>      <servlet-mapping>          <servlet-name>SpringMVC</servlet-name>          <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->          <url-pattern>/</url-pattern>      </servlet-mapping>    <!-- 引入静态文件 -->     <servlet-mapping>     <servlet-name>default</servlet-name>     <url-pattern>*.js</url-pattern>    </servlet-mapping>    <servlet-mapping>     <servlet-name>default</servlet-name>     <url-pattern>*.css</url-pattern>    </servlet-mapping>    <servlet-mapping>     <servlet-name>default</servlet-name>     <url-pattern>*.gif</url-pattern>    </servlet-mapping>      <welcome-file-list>          <welcome-file>/index.jsp</welcome-file>      </welcome-file-list>    </web-app>

9 编码

整合已经完毕下边开始编码

9.1前端

chatMain.css

body{font-size:11px}h3{margin:0px}.divShow{border:solid 1px #ccc;height:300px;padding:5px;font-size:12px;overflow-y:scroll}#divMain{border:soild 5px #ccc}#divMain .divTop{padding:10px}#divMain .divTop .divL{float:left;width:78%}#divMain .divTop .divR{float:right;width:20%}#divMain .divBot{clear:both;padding:10px}#divMain .divBot .pb{padding-bottom:3px}#divMain .divBot .pl{padding-left:12px}#divMain .divBot .pt{padding-top:3px;color:#555}.clsTip{position:absolute;width:160px;text-align:center;font-size:13px;border:soild 1px #cc3300;margin-top:5px;padding:2px;margin-bottom:5px;backgroudn-color:#ffe0a3;display:none}.btn{border:soild 1px #666;padding:2px;width:135px;height:54px;font-size:16px;filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff,EndColorStr=#ECE9D8)}.txt{border:#666 1px solid;padding:2px;margin-right:3px}

chatMain.js

$(function(){//绑定全局ajaxStart事件//$("#divMsg").ajaxStart(function(){//$(this).show()//})//绑定全局ajaxStop事件//$("#divMsg").ajaxStop(function(){//$(this).hide()//})initFace();//初始化表情getMessageList();//取得聊天信息getOnlineList();//取得在线人员/** * 点击发送按钮 */$("#btnSend").bind("click",function(){var $content = $("#txtContent")if($content.val()!=""){sendContent($content.val())}else{alert("发送内容不能为空")$content.foucus()return false}})/** * 点击表情图标 */$("table tr td img").bind("click",function(){var strContent = $("#txtContent").val()+"<:"+this.id+":>"$("#txtContent").val(strContent)})})/** * 发送聊天内容函数 * @param content 聊天内容 */function sendContent(content){$.ajax({type:'get',data:{"content":content},url:'sentContent.html',dataType:'text',success:function(data){if(data=="success"){getMessageList();$("#txtContent").val("")}else{alert("发送失败")return false}}})}/** * 取得聊天内容数据 */function getMessageList(){$.ajax({type:"get",url:"getMassageList.html",dataType:"text",success:function(data){$("#divContent").html(data)}})autoUpdContent()  //定时获取聊天信息}/** * 获取在线用户 */function getOnlineList(){$.ajax({type:"get",url:"getOnlineList.html",dataType:"text",success:function(data){$("#divOnLine").html(data)}})}/** * 设置表情图标函数 */function initFace(){var strHTML = "";for(var i=1;i<=10;i++){strHTML += "<img src='/chatroom/static/pic/"+i+".gif' id='"+i+"'/>"}$("#divFace").html(strHTML)}/** * 定时返回聊天内容和在线人数 */function autoUpdContent(){setTimeout(getMessageList,5000)setTimeout(getOnlineList,6000)}

login.js

$(document).ready(function(){    //全局ajax开始事件    $("#msg").ajaxStart(function(){        $(this).html("正在登陆聊天室中···")    })    $("#btnLogin").bind("click",function(){        var $name = $("#txtName")        var $password = $("#txtPassword")        if($name.val()==""){            alert("用户名不能为空")            $name.focus()            return false        }else if($password.val()==""){            alert("密码不能为空")            $password.focus()            return false        }else{            userLogin($name.val(),$password.val())        }    })})//ajax登陆处理function userLogin(name,password){    $.ajax({        type:"GET",        url:"login.html",        data:{"name":name,"password":password},        dataType:'text',        success:function(data){            if(data == "success"){            window.location.href="/chatroom/user/toChatMain.html";            }else{                $("#msg").html("用户名或密码错误，请重新登录")                return false            }        }    })}

pic

这个随意，名称只要是1、2、3···

chatMain.jsp

<%@ 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>大家的聊天室</title><script type="text/javascript" src="${pageContext.request.contextPath}/static/js/jquery-1.8.3.min.js"></script><script type="text/javascript" src="${pageContext.request.contextPath}/static/js/chatMain.js"></script><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/css/chatMain.css" /></head><body><div id="divMain">    <div class="divTop">        <div class="divL">            <h3>大家的聊天室</h3>            <div class="divShow" id="divContent"></div>        </div>        <div class="divR">            <h3>当前在线人员</h3>            <div class="divShow" id="divOnLine"></div>        </div>    </div>    <div class="divBot">        <table cellpadding="0" cellspacing="0">            <tr><td colspan="2" id="divFace" class="pb"></td></tr>            <tr>                <td>                    <textarea rows="3" cols="64" id="txtContent"></textarea>                </td>                <td class="p1">                    <input type="button" id="btnSend" value="发送" class="btn"> </input>                </td>            </tr>            <tr><td colspan="2" class="pt">发送内容不能为空 </td></tr>        </table>    </div>    <span id="divMsg" class="clsTip">正在发送数据。。。</span></div></body></html>

login.jsp

<%@ 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>登陆</title><style type="text/css">@CHARSET "UTF-8";/* 全局控制 */* {    margin:0;    padding:0;}body {    font-size: 12px;    font-family: "宋体";    text-align: center;}a {    color: #e3e3e3;    text-decoration: none;    padding: 2px;}a:hover {    color: #e3e3e3;    background-color: #606870;}ul {    list-style: none;    margin: 10px auto;}li {    margin: 3px 1px;    line-height: 24px;    height: 24px;}li:hover {    background-color: #eee;}button {    line-height: 24px;    height: 26px;}fieldset {    height: 120px;    width: 250px;    padding: 5px;}label {    width: 80px;    float: left;    text-align: right;}input {    width: 150px;}</style><script type="text/javascript" src="${pageContext.request.contextPath}/static/js/jquery-1.8.3.min.js"></script><script type="text/javascript" src="${pageContext.request.contextPath}/static/js/login.js"></script></head><body><fieldset><legend>登录</legend>    <ul>        <li><span>用户名:</span><input type="text" id="txtName"></input></li>        <li><span>密码:</span><input type="password" id="txtPassword"></input></li>        <li>        <button id="btnLogin">登录</button>        <button id="btnReset" type="reset">重置</button>        </li>    </ul>    <span id="msg"></span></fieldset></body></html>

index.jsp

<script type="text/javascript">    window.location.href="/chatroom/user/toLogin.html";</script>

9.2 后台

UserController.java

package com.chatroom.controller;import java.io.PrintWriter;import java.io.UnsupportedEncodingException;import java.text.SimpleDateFormat;import java.util.Date;import javax.annotation.Resource;import javax.servlet.ServletContext;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.chatroom.service.IUserService;@Controller@RequestMapping("/user")public class UserController extends HttpServlet {    /**     *      */    private static final long serialVersionUID = 95163763702302820L;    @Resource    private IUserService userService;      //获取session    HttpSession session ;    ServletContext application;    /**     * 控制跳转到登录界面     * @param request     * @param model     * @return     */    @RequestMapping(value="/toLogin.html")    public String toLogin(HttpServletRequest request,Model model){        return "login";    }        /**     * 执行登录操作     * @param request     * @param model     * @param out     */    @RequestMapping(value="/login.html",method = RequestMethod.GET)    public void login(HttpServletRequest request,Model model,PrintWriter out){        String name = request.getParameter("name");        String password = request.getParameter("password");        String s = userService.login(name, password);        session = request.getSession();        if(s=="success"){            session.setAttribute("name", name); // 保存当前登录的用户名            //            application = request.getSession().getServletContext();            if(application.getAttribute("onLine")==null){                application.setAttribute("onLine", "");            }            String onLine = application.getAttribute("onLine").toString();            onLine += name+"<br/>";            application.setAttribute("onLine", onLine);        }        //写入返回结果        out.write(s);    }        /**     * 控制跳转到聊天主界面     * @param request     * @param model     * @return     */    @RequestMapping("/toChatMain.html")    public String toChatMain(HttpServletRequest request,Model model){        return "chatMain";    }        /**     * 前端发送聊天内容     * @param request     * @param model     */    @RequestMapping("sentContent.html")    public void sentContent(HttpServletRequest request,Model model,PrintWriter out){        //存储信息的全局变量        application = request.getSession().getServletContext();        session = request.getSession();        if(application.getAttribute("message")==null){            application.setAttribute("message", "");        }        //获取application中存储的聊天内容        String sourceMessage = application.getAttribute("message").toString();        //获取前端发送的聊天内容        String content = request.getParameter("content");        content = content.replace("<:", "<img src='/chatroom/static/pic/");        content = content.replace(":>", ".gif'/>");        // 获取session中的登陆者        String name = session.getAttribute("name").toString();        sourceMessage += this.getTime()+ "<font color='blue'><strong> "+name+"</strong></font> :"+content+"</br>";        application.setAttribute("message", sourceMessage);        //写入返回结果        out.write("success");    }        /**     * 前端定时获取聊天信息     * @param request     * @param model     * @param out     */    @RequestMapping("/getMassageList.html")    public void getMassageList(HttpServletRequest request,Model model,PrintWriter out){        application = request.getSession().getServletContext();        if(application.getAttribute("message")==null){            application.setAttribute("message", "");        }        //获取application中存储的聊天内容        String sourceMessage = application.getAttribute("message").toString();        String str = null;        try {            str = new String (sourceMessage.getBytes(), "utf-8");        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }        out.write(str);    }        /**     * 前端定时获取在线人员     * @param request     * @param model     * @param out     */    @RequestMapping("getOnlineList.html")    public void getOnlineList(HttpServletRequest request,Model model,PrintWriter out){        application = request.getSession().getServletContext();        if(application.getAttribute("onLine")==null){            application.setAttribute("onLine", "");        }        //获取application中存储在 线人员        String sourceOnline = application.getAttribute("onLine").toString();        out.write(sourceOnline);    }        /**     * 自定义日期格式     * @return     */    private String getTime(){        Date date = new Date();        SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");        return df.format(date);    }}

UserService.java

package com.chatroom.service.impl;import java.util.List;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.chatroom.dao.IUserDao;import com.chatroom.pojo.User;import com.chatroom.service.IUserService;@Servicepublic class UserService implements IUserService {        @Resource    IUserDao userDao;    @Override    public User getUserById(int userId) {        return userDao.selectByPrimaryKey(userId);    }    @Override    public void insertUser(List<User> users) {        // TODO Auto-generated method stub    }    @Override    public String login(String name, String password) {        User record = new User();        record.setUserName(name);        record.setPassword(password);        User user = userDao.selectUserForLogin(record);        if(user==null){            return "fail";        }else{            return "success";        }    }}

IUserService.java

package com.chatroom.service;import java.util.List;import com.chatroom.pojo.User;public interface IUserService {    public User getUserById(int userId);    public void insertUser(List<User> users);    /**     * 登陆处理     * @param name     * @param password     * @return     */    public String login(String name,String password);}

IUserDao.java

只多了一行用于登陆的代码

User selectUserForLogin(User record);

UserMapper.xml

只多了一个用于select的语句，id和IUserDao的方法名一致

<select id="selectUserForLogin" resultMap="BaseResultMap" parameterType="com.chatroom.pojo.User" >    select     <include refid="Base_Column_List" />    from user_t    where user_name = #{userName,jdbcType=VARCHAR}      and password = #{password,jdbcType=VARCHAR}  </select>

至此所有代码已经结束，下面让我们看一下运行结果

基本功能已经完成就是这样，再次感谢文章开头那篇博文对框架整合的指导。

源码下载地址：http://download.csdn.net/detail/a582127421/8064265

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