SSM整合案例

@(Spring)[spring, springmvc, mybatis, ssm整合, Spring]

导入依赖

这里使用Maven导入Jar包。

    <properties>        <spring.version>4.2.4.RELEASE</spring.version>        <mysql.version>5.1.32</mysql.version>        <dbcp.version>1.4</dbcp.version>        <mybatis.version>3.3.0</mybatis.version>        <mybatis-spring.version>1.2.3</mybatis-spring.version>        <slf4j.version>1.7.5</slf4j.version>        <javassist.version>3.16.1-GA</javassist.version>        <cglib.version>2.2.2</cglib.version>        <junit.version>4.10</junit.version>        <servlet.version>2.5</servlet.version>        <jsp.version>2.0</jsp.version>        <jstl.version>1.2</jstl.version>    </properties>    <dependencies>        <!-- Spring依赖 -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aspects</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-orm</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context-support</artifactId>            <version>${spring.version}</version>        </dependency>        <!-- mysql数据库驱动 -->        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>${mysql.version}</version>        </dependency>        <!-- dbcp连接池 -->        <dependency>            <groupId>commons-dbcp</groupId>            <artifactId>commons-dbcp</artifactId>            <version>${dbcp.version}</version>        </dependency>        <!-- mybatis及其Spring整合依赖 -->        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>${mybatis.version}</version>        </dependency>        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis-spring</artifactId>            <version>${mybatis-spring.version}</version>        </dependency>        <!-- 日志 -->        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>            <version>${slf4j.version}</version>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <version>${slf4j.version}</version>        </dependency>        <!-- 字节码类库 -->        <dependency>            <groupId>org.javassist</groupId>            <artifactId>javassist</artifactId>            <version>${javassist.version}</version>        </dependency>        <dependency>            <groupId>cglib</groupId>            <artifactId>cglib</artifactId>            <version>${cglib.version}</version>        </dependency>        <!-- 单元测试 -->        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>${junit.version}</version>            <scope>test</scope>        </dependency>        <!-- Servlet，jsp，jstl依赖 -->        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>servlet-api</artifactId>            <version>${servlet.version}</version>            <scope>provided</scope>        </dependency>        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jsp-api</artifactId>            <version>${jsp.version}</version>            <scope>provided</scope>        </dependency>        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jstl</artifactId>            <version>${jstl.version}</version>        </dependency>    </dependencies>

创建MyBatis配置文件

文件放在classpath目录下，文件名为：SqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE configuration    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"    "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration>    <!-- 空文件，暂时不需要配置，为以后MyBatis扩展做准备 --></configuration>

创建Spring Dao配置文件

文件放在classpath目录下，文件名为：applicationContext_dao.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"     xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    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                        http://www.springframework.org/schema/aop                         http://www.springframework.org/schema/aop/spring-aop.xsd                         http://www.springframework.org/schema/tx                         http://www.springframework.org/schema/tx/spring-tx.xsd">    <!-- 加载配置文件 -->    <context:property-placeholder location="classpath:db.properties" />    <!-- 数据库连接池 -->    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">        <property name="driverClassName" value="${jdbc.driver}" />        <property name="url" value="${jdbc.url}" />        <property name="username" value="${jdbc.username}" />        <property name="password" value="${jdbc.password}" />        <property name="maxActive" value="10" />        <property name="maxIdle" value="5" />    </bean>    <!-- mapper配置 -->    <!-- spring管理sqlsessionfactory -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!-- 数据库连接池 -->        <property name="dataSource" ref="dataSource" />        <!-- 加载mybatis的全局配置文件 -->        <property name="configLocation" value="classpath:SqlMapConfig.xml" />    </bean>    <!-- 配置Mapper扫描器，自动扫描自动包下的Mapper -->    <!-- 注意：使用这种方式，Mapper和映射文件需要同名 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="com.pc.ssm.dao" />    </bean></beans>

提供数据库配置文件

文件放在classpath目录下，文件名为：db.properties

jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost/myssm?useUnicode=true&characterEncoding=utf8jdbc.username=rootjdbc.password=123456

提供日志配置文件

文件放在classpath目录下，文件名为：log4j.properties

# Global logging configurationlog4j.rootLogger=DEBUG, stdout# Console output...log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

创建Spring Service配置文件

文件放在classpath目录下，文件名为：applicationContext_service.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"     xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    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                        http://www.springframework.org/schema/aop                         http://www.springframework.org/schema/aop/spring-aop.xsd                         http://www.springframework.org/schema/tx                         http://www.springframework.org/schema/tx/spring-tx.xsd">    <!-- 扫描带@Service的类 -->    <context:component-scan base-package="com.pc.ssm.service" /></beans>

创建Spring Transaction配置文件

文件放在classpath目录下，文件名为：applicationContext_transaction.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context"     xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    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                        http://www.springframework.org/schema/aop                         http://www.springframework.org/schema/aop/spring-aop.xsd                         http://www.springframework.org/schema/tx                         http://www.springframework.org/schema/tx/spring-tx.xsd">    <!-- 事务管理器 -->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <!-- 注入数据源 -->        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 事务通知 -->    <tx:advice id="txAdvice" transaction-manager="transactionManager">        <tx:attributes>            <!-- 配置事务 -->            <tx:method name="save*" propagation="REQUIRED" />            <tx:method name="insert*" propagation="REQUIRED" />            <tx:method name="delete*" propagation="REQUIRED" />            <tx:method name="update*" propagation="REQUIRED" />            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />        </tx:attributes>    </tx:advice>    <!-- 配置事务切面 -->    <aop:config>        <aop:pointcut expression="execution(* com.pc.ssm.service.*.*(..))" id="txPointcut"/>        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut" />    </aop:config></beans>

配置web.xml

<?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_2_5.xsd"    version="2.5">    <display-name>SSMIntegrationDemo</display-name>    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>        <welcome-file>index.html</welcome-file>    </welcome-file-list>    <!-- 加载spring容器 -->    <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>    <!-- 配置SpringMVC指派器 -->    <servlet>        <servlet-name>springmvc</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <!-- 指定配置文件 -->            <param-name>contextConfigLocation</param-name>            <param-value>classpath:springmvc.xml</param-value>        </init-param>        <load-on-startup>10</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <url-pattern>*.action</url-pattern>    </servlet-mapping></web-app>

创建Spring MVC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: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.xsd                        http://www.springframework.org/schema/mvc                         http://www.springframework.org/schema/mvc/spring-mvc.xsd                        http://www.springframework.org/schema/context                         http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 扫描带@Controller的类 -->    <context:component-scan base-package="com.pc.ssm.web.controller" />    <!-- 加载注解驱动，自动加载默认处理器映射器和处理器适配器 -->    <mvc:annotation-driven />    <!-- 视图解析器 -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <!-- 可以不配置，默认使用jstl视图 -->        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />        <!-- jsp前缀 -->        <property name="prefix" value="/WEB-INF/jsp/" />        <!-- jsp后缀 -->        <property name="suffix" value=".jsp" />    </bean></beans>

测试环境是否搭建成功

使用MyBatis生成器生成Mapper和POJO

使用mybatis-generator-core.jar生成UserMapper.java、UserMapper.xml、User.java、UserExample.java。

PS：怎么生成Mapper和POJO可以自行搜索。

UserService

package com.pc.ssm.service;import java.util.List;import com.pc.ssm.pojo.User;/** * 用户Service层接口 *  * @author Switch * @data 2017年1月11日 * @version V1.0 */public interface UserService {    /**     * 获取所有用户信息     *      * @return     */    List<User> findAllUser();}

UserServiceImpl

package com.pc.ssm.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.pc.ssm.dao.UserMapper;import com.pc.ssm.pojo.User;import com.pc.ssm.service.UserService;/** * 用户Service层接口实现类 *  * @author Switch * @data 2017年1月11日 * @version V1.0 */@Servicepublic class UserServiceImpl implements UserService {    // 注入用户Mapper    @Autowired    private UserMapper userMapper;    @Override    public List<User> findAllUser() {        return userMapper.selectByExample(null);    }}

UserController

package com.pc.ssm.web.controller;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import com.pc.ssm.pojo.User;import com.pc.ssm.service.UserService;/** * 用户控制器 *  * @author Switch * @data 2017年1月11日 * @version V1.0 */@Controller@RequestMapping("/user")public class UserController {    // 注入用户Service    @Autowired    private UserService userService;    @RequestMapping("/list")    public String list(Model model) {        List<User> users = userService.findAllUser();        model.addAttribute("users", users);        return "list";    }}

list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%><!DOCTYPE html><html>    <head>        <meta charset="UTF-8">        <title>用户列表</title>    </head>    <body style="margin: 0 auto; width: 800px;">         <form action="${pageContext.request.contextPath}/user/findByCriteria.action" method="post">            <table width="100%" border=1>                <caption>查询条件</caption>                <tr>                    <td><input type="submit" value="查询"/></td>                </tr>            </table>        </form>        <table style="width: 88%;" border=1>            <caption>用户列表</caption>            <tr>                <td>用户编号</td>                <td>用户名</td>                <td>生日</td>                <td>性别</td>                <td>地址</td>                <td>操作</td>            </tr>            <c:forEach items="${users}" var="user">                <tr>                    <td>${user.id}</td>                    <td>${user.username}</td>                    <td><fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd HH:mm:ss"/></td>                    <td>                        <c:choose>                            <c:when test="${user.sex == 1}">男</c:when>                            <c:when test="${user.sex == 2}">女</c:when>                        </c:choose>                    </td>                    <td>${user.address}</td>                    <td><a href="${pageContext.request.contextPath}/user/showEdit.action?id=${user.id}">修改</a></td>                </tr>            </c:forEach>        </table>    </body></html>

输入http://localhost:8080/SSMIntegrationDemo/user/list.action，如下显示：

GitHub：SSMIntegrationDemo