Spring框架学习day4--Spring集成Mybatis（IOC)
- Spring集成Mybatis
- 1.添加jar包（pom.xml）
- 2.配置sqlSessionFactiory（spring.xml)
- 3.再service类中注入Dao代理接口
- 4.测试类
- 5文件结构
Spring集成Mybatis
Spring集成Mybatis其核心是将SqlSessionFactory交由Spring管理，并由 Spring管理对dao接口的代理实现。 导入mybatisjar包
创建新的ssm项目为例文件结构如下
1.添加jar包（pom.xml）
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<groupId>org.examplegroupId>
<artifactId>ssmartifactId>
<version>1.0-SNAPSHOTversion>
<properties>
<maven.compiler.source>8maven.compiler.source>
<maven.compiler.target>8maven.compiler.target>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>5.2.2.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>5.2.2.RELEASEversion>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.10version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.16version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.2version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>
dependencies>
project>
2.配置sqlSessionFactiory（spring.xml)
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource">property>
<property name="configLocation" value="classpath:mybatis.xml">property>
<property name="mapperLocations" value="classpath:mappers/*Mapper.xml">
property>
bean>
生成接口代理(spring.xml)
<bean id="mapperFactory" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="org.example.dao">property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
property>
bean>
完整spring.xml配置如下
<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
">
<context:component-scan base-package="org.example" >context:component-scan>
<context:property-placeholder location="config.properties"/>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${driverClassName}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
<property name="initialSize" value="${initialSize}"/>
<property name="maxActive" value="${maxActive}"/>
bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource">property>
<property name="configLocation" value="classpath:mybatis.xml">property>
<property name="mapperLocations" value="classpath:mappers/*Mapper.xml">
property>
bean>
<bean id="mapperFactory" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="org.example.dao">property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
property>
bean>
beans>
注：对应的mybatis.xml文件有所变化
<?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>
<settings>
<!-- 打印日志-->
<setting name="logImpl" value="STDOUT_LOGGING"/>
<!-- 开启驼峰命名规则-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!-- 为类配置起别名-->
<typeAliases>
<!-- 下面别名怎么引用呢？ 直接在xml文件中使用别名就可以了-->
<typeAlias type="org.example.model.Admin" alias="Admin"/>
</typeAliases>
</configuration>
3.再service类中注入Dao代理接口
@Service("loginService")
public class LoginService {
@Autowired
LoginDao loginDao;
public Admin login(Admin admin){
return loginDao.login(admin);
}
}
4.测试类
package org.example.test;
import org.example.model.Admin;
import org.example.service.LoginService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
Admin admin = context.getBean("admin", Admin.class);
admin.setAccount("admin");
admin.setPassword("111");
LoginService loginService = context.getBean("loginService", LoginService.class);
Admin result = loginService.login(admin);
System.out.println(result);
}
}
5文件结构
