SSM整合
1:新建Web项目
1.1基于maven创建
最终项目结构
1.2打包方式为war包
<packaging>war</packaging>
1.3添加web项目的依赖
<!--web依赖-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
1.4配置服务器运行环境
2:部署MyBatis
2.1添加MyBatis依赖
<!--MyBatis依赖-->
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<!--Lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
<scope>provided</scope>
</dependency>
2.2MyBatis配置文件
<?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>
</configuration>
3:部署Spring和SpringMVC
3.1添加Spring和SpringMVC依赖
<properties>
<!--properties中统一Spring版本-->
<spring-version>5.2.0.RELEASE</spring-version>
</properties>
<!--Spring,SpringMVC-->
<!--context-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-version}</version>
</dependency>
<!--aspects-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring-version}</version>
</dependency>
<!--jdbc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-version}</version>
</dependency>
<!--test-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-version}</version>
</dependency>
<!--webmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-version}</version>
</dependency>
<!--web-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-version}</version>
</dependency>
<!--jackson-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.13.2</version>
</dependency>
3.2创建Spring配置文件
3.2.1spring-context.xml:只配置注解声明,以及类的管理
<?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
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--开启注解驱动-->
<context:annotation-config/>
<!--声明注解扫描范围-->
<context:component-scan base-package="HD"/>
</beans>
3.2.2spring-mvc.xml:只配置mvc相关,比如静态资源,拦截器配置
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--声明MVC注解配置-->
<mvc:annotation-driven/>
</beans>
3.2.3spring-mybatis.xml:只配置Spring和MyBatis整合
<?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
https://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">
</beans>
3.2.4SpringMVC前端控制器
wem.xml配置SpringMVC前端控制器
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>ssm</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--服务器启动时加载这些配置文件-->
<param-value>classpath:spring-*.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ssm</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
4:整合
MyBatis-Spring整合的依赖:
<!--MyBatis提供的兼容Spring的补丁,MyBatis-Spring整合包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
4.1配置druid数据源
4.1.1添加druid的依赖
<!--druid数据库连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
4.1.2创建druid.properties文件
druid.driver=com.mysql.jdbc.Driver
druid.url=jdbc:mysql://localhost:3306/数据库名称?characterEncoding=UTF-8
druid.username=root
druid.password=root
#初始化连接数
druid.pool.init=1
#最小连接数
druid.pool.minIdle=3
#最大连接数
druid.pool.maxActive=20
#最长等待连接时间
druid.pool.timeout=30000
4.1.3在spring-mybatis中配置数据源
<!--引入资源文件druid.properties-->
<context:property-placeholder location="classpath:/druid.properties"/>
<!--创建druidDatasource交给SpringIOC管理-->
<bean id="driver" class="com.mysql.jdbc.Driver"/>
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<!--drier需要对象-->
<property name="driver" ref="driver"/>
<property name="url" value="${druid.url}"/>
<property name="username" value="${druid.username}"/>
<property name="password" value="${druid.password}"/>
<property name="initialSize" value="${druid.pool.init}"/>
<property name="minIdle" value="${druid.pool.minIdle}"/>
<property name="maxActive" value="${druid.pool.maxActive}"/>
<property name="maxWait" value="${druid.pool.timeout}"/>
</bean>
4.2在spring-mybatis中配置SqlSessionFactory
<!--!配置SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="druidDataSource"/>
<property name="mapperLocations" value="classpath:mappers/*Mapper.xml"/>
<property name="typeAliasesPackage" value="HD.Pojo"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
4.3在spring-mybatis中配置MapperScannerConfigurer
<!--!配置mapper扫描器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="HD.Dao"/>
</bean>
4.4在spring-mybatis中配置事务管理
<!--1:配置Spring提供的事务管理类,交给IOC管理-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="druidDataSource"></property>
</bean>
<!--2:声明注解驱动事务管理-->
<tx:annotation-driven transaction-manager="transactionManager"/>
5:整合测试
5.1数据表
实体类
@Data
@NoArgsConstructor
@AllArgsConstructor
@ToString
public class user {
private Integer userID;
private String userName;
private String userPws;
}
5.2Dao层
userMapper接口:
@Repository
public interface userMapper {
//通过ID查询用户
User queryUserById(@Param("id") Integer id);
}
userMapper映射文件:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="HD.Dao.userMapper">
<!-- User queryUserById(@Param("id") Integer id);-->
<resultMap id="userMap" type="user">
<id column="user_id" property="userId"/>
<result column="user_name" property="userName"/>
<result column="user_pwd" property="userPwd"/>
</resultMap>
<select id="queryUserById" resultMap="userMap">
select user_id,user_name,user_pwd
from users where user_id=#{id}
</select>
</mapper>
测试:
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-context.xml","classpath:spring-mvc.xml","classpath:spring-mybatis.xml"})
public class userMapperTest {
@Resource
private UserMapper userMapper;
@Test
public void queryUserById() {
User user = userMapper.queryUserById(1);
System.out.println(user);
}
}
5.3Service层
Service接口:
public interface UserService {
//根据ID查询用户
User checkUser(Integer id);
}
Service接口实现类:
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserMapper userMapper;
@Override
public User checkUser(Integer id) {
return userMapper.queryUserById(id);
}
}
ServiceTest:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-context.xml","classpath:spring-mvc.xml","classpath:spring-mybatis.xml"})
public class UserServiceImplTest {
@Resource
private UserService userService;
@Test
public void checkUser() {
System.out.println(userService.checkUser(1));
}
}
5.4Controller
UserController:
@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private UserService service;
@RequestMapping("/login")
@ResponseBody
public User login(@RequestParam String id){
Integer userId=Integer.parseInt(id);
User user = service.checkUser(userId);
return user;
}
}
做一个简单的查询:
<%@ page language="java"
isELIgnored="false"
contentType="text/html;charset=UTF-8"
pageEncoding="UTF-8" %>
<html>
<head>
<title>用户登录</title>
</head>
<body>
<form method="post" action="/user/login">
<input type="text" name="id">
<input type="submit" value="提交">
</form>
</body>
</html>