利用SSM搭建web项目

下面给大家介绍一下，ssm的搭建和使用，7步搞定框架搭建

SSM所需要的jar包下载地址：http://download.csdn.net/download/baidu_32492845/10126554

1，创建数据库

DROP TABLE IF EXISTS `userinformation`;CREATE TABLE `userinformation` (  `id` int(100) NOT NULL AUTO_INCREMENT,  `name` varchar(100) DEFAULT NULL,  `password` varchar(100) DEFAULT NULL,  `other` varchar(200) DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=latin1;

2，创建Javaweb项目，如下图所示，先建立几个必要的包

config-用来装配置文件；controller-用来装controller文件；domain-用来装实体类；mapper-用来装DAO文件，service-服务层文件；

3，建立创建controller类，domain实体类，DAO的mapper接口和xml文件，service类，只是创建，里面的代码下面会告诉大家怎么写，如下图所示

4，将ssm框架需要用到的jar包copy到WebRoot下面的WEB-INF下面的lib中，如图

SSM框架需要的jar包下载地址：http://download.csdn.net/download/baidu_32492845/10126554

5，开始写框架配置文件

1）在config包下面创建一个mybatis-config.xml文件，也就是DAO层的配置文件，文件代码如下

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration>    <!--自己定义别名-->     <typeAliases>    <!--通过扫描的方式-->      <package name="com.test.domain"/>    </typeAliases> <!-- 加载 映射文件 --><mappers><package name="com/test/mapper" /></mappers></configuration>

2）下面再在WebRoot下面的WEB-INF下面中创建一个applicationContext.xml,是用来配置spring的，代码如下

<?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"       xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"       xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd           http://www.springframework.org/schema/context           http://www.springframework.org/schema/context/spring-context-3.0.xsd           http://www.springframework.org/schema/aop           http://www.springframework.org/schema/aop/spring-aop-3.0.xsd           http://www.springframework.org/schema/tx           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"><bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">    <property name="driverClassName" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/test" /><property name="username" value="root" /><property name="password" value="" /></bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource" /><property name="configLocation" value="classpath:com/test/config/mybatis-config.xml" /></bean>   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  <property name="basePackage" value="com.test.mapper" />   <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />    </bean>    <!-- 事务管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><!-- 引入事务代理 --><tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/><context:component-scan base-package="com.test"></context:component-scan></beans>

3）再在WebRoot下面的WEB-INF下面创建一个配置文件mvc-config.xml，是配置controller层的，代码如下

<?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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">    <!-- Spring容器扫描包 --><context:component-scan base-package="com.test"></context:component-scan><!-- 开启注解 --><mvc:annotation-driven/><!-- 允许使用容器默认的Servlet来处理静态资源的请求 --><mvc:default-servlet-handler /><!-- 如果控制器组件方法返回值为：hello, 那么视图路径自动拼装为：/hello.jsp --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/" /><property name="suffix" value=".jsp"></property></bean></beans>

4）配置web.xml文件，代码如下

<?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"><!-- 加载Spring容器配置 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 设置Spring容器加载所有的配置文件的路径 --><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/applicationContext.xml</param-value></context-param><!-- 配置SpringMVC核心控制器 --><servlet><servlet-name>springMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name>    <param-value>/WEB-INF/mvc-config.xml</param-value></init-param><!-- 启动加载一次 --><load-on-startup>1</load-on-startup></servlet><!--为DispatcherServlet建立映射 --><servlet-mapping><servlet-name>springMVC</servlet-name><!-- 此处可以可以配置成*.do --><url-pattern>/</url-pattern></servlet-mapping><!-- 防止Spring内存溢出监听器 --><listener><listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class></listener><!-- 解决工程编码过滤器 --><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>

6，配置文件写好了，下面开始写代码

1)domain实体类的User.java

package com.test.domain;public class User {private int id;private String name;private String password;private String other;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getOther() {return other;}public void setOther(String other) {this.other = other;}}

2)DAO层UserMapper.java

package com.test.mapper;import java.util.List;import com.test.domain.User;public interface UserMapper {List<User> findAllUser();}

3)DAO层UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><!-- namespace 是用来绑定DAO的，这样UserMapper.java是一个interface，     而利用这里的UserMapper.xml来作其实现这个interface --><mapper namespace="com.test.mapper.UserMapper">    <!--resultMap是指这里用到的实体类是哪个，id是用来作sql操作完成作返回用到的  -->    <resultMap type="com.test.domain.User" id="UserMap">    <!--property是实体类代码的properties，column是数据库表中的 properties -->    <id property="id" column="id"/>    <result property="name" column="name"/>    <result property="password" column="password"/>    <result property="other" column="other"/>    </resultMap>    <!-- id和ＤＡＯ中UserMapper.java里面的方法名对应，    resultMap就是返回的类型，也就是上面已经定义了的resultMap -->    <select id="findAllUser"  resultMap="UserMap">    select * from userInformation    </select> </mapper>

4）service层的UserService.java

package com.test.service;import java.util.List;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.test.domain.User;import com.test.mapper.UserMapper;@Servicepublic class UserService {@Resourceprivate UserMapper userMapper;public List<User> getAllUser() {List<User> list = userMapper.findAllUser();return list;}}

5)controller层的UserController.java

package com.test.controller;import java.util.List;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.test.domain.User;import com.test.service.UserService;@Controller@RequestMapping("/UserController")public class UserController {@Resourceprivate UserService userService;@RequestMapping("/getAllUser")public String getAllUser(String message, Model model) {System.out.println("============message===============:" + message);List<User> list = userService.getAllUser();model.addAttribute("userList", list);return "list";}}

6)index.jsp  访问项目的首页

<%@ 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 'index.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>    <form action="UserController/getAllUser" method="get">    <input type="text" name="message"/>    <input type="submit" value="提交"/>    </form>  </body></html>

7)lits.jsp  用来显示所有user的

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://" + request.getServerName() + ":"+ request.getServerPort() + path + "/";%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><base href="<%=basePath%>"><title>list</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><body><table border="1"><tbody><tr><th>id</th><th>name</th><th>password</th><th>other</th></tr><c:forEach items="${userList}" var="list"><tr><td>${list.id }</td><td>${list.name }</td><td>${list.password }</td><td>${list.other }</td></tr></c:forEach></tbody></table></body></html>

7，运行web项目，在浏览器输入：localhost:端口号默认8080/项目名字/index.jsp，我的是： localhost:8090/TTestSSM/index.jsp，记得数据库要启动起来

下面是项目首页index.jsp

点击提交，出现下面list.jsp界面

好了，整个SSM项目到这里就搭建完成了。

最后可以下载完整版ssm的demo

地址：http://download.csdn.net/download/baidu_32492845/10126602