标签：conf url iba play factor ace depend 实现 can
MyBatis的持久化解决方案是将用户从原始的JDBC访问中解放出来,用户只需要定义需要操作的SQL语句,
无须关注底层的JDBC操作,就可以以面向对象的方式来进行持久化层操作.底层数据库连接的获取,数据访问的实现,事务控制等都无须用户关心,
从而将应用层从底层的JDBC/JTA API抽取出来.通过配置文件管理JDBC连接,让MyBatis解决持久化的实现.在MyBatis中的常见对象有SqlSessionFactory和SqlSession.
依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
<version>5.1.27</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
use类
public class User { private Long id; private String username; private String address; @Override public String toString() { return "User{" + "id=" + id + ", username=‘" + username + ‘\‘‘ + ", address=‘" + address + ‘\‘‘ + ‘}‘; } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } }
DataSourceConfig 数据源配置类
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.sql.DataSource; @Configuration public class DataSourceConfig { @Bean @ConfigurationProperties(prefix = "spring.datasource.one") DataSource dsOne() { return DruidDataSourceBuilder.create().build(); } @Bean @ConfigurationProperties(prefix = "spring.datasource.two") DataSource dsTwo() { return DruidDataSourceBuilder.create().build(); } }
MyBatisConfigOne
import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.SqlSessionTemplate; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.sql.DataSource; @Configuration @MapperScan(basePackages = "org.javaboy.mybatis.mapper1", sqlSessionFactoryRef = "sqlSessionFactory1", sqlSessionTemplateRef = "sqlSessionTemplate1") public class MyBatisConfigOne { @Autowired @Qualifier("dsOne") DataSource dsOne; @Bean SqlSessionFactory sqlSessionFactory1() { SqlSessionFactory sessionFactory = null; try { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dsOne); sessionFactory = bean.getObject(); } catch (Exception e) { e.printStackTrace(); } return sessionFactory; } @Bean SqlSessionTemplate sqlSessionTemplate1() { return new SqlSessionTemplate(sqlSessionFactory1()); } }
MyBatisConfigTwo
import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.SqlSessionTemplate; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.sql.DataSource; @Configuration @MapperScan(basePackages = "org.javaboy.mybatis.mapper2", sqlSessionFactoryRef = "sqlSessionFactory2", sqlSessionTemplateRef = "sqlSessionTemplate2") public class MyBatisConfigTwo { @Autowired @Qualifier("dsTwo") DataSource dsOne; @Bean SqlSessionFactory sqlSessionFactory2() { SqlSessionFactory sessionFactory = null; try { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(dsOne); sessionFactory = bean.getObject(); } catch (Exception e) { e.printStackTrace(); } return sessionFactory; } @Bean SqlSessionTemplate sqlSessionTemplate2() { return new SqlSessionTemplate(sqlSessionFactory2()); } }
UserMapper1
import org.javaboy.mybatis.bean.User; import java.util.List; //@Mapper public interface UserMapper1 { // @Select("select * from t_user") List<User> getAllUser(); }
UserMapper1.xml
<?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="org.javaboy.mybatis.mapper1.UserMapper1"> <select id="getAllUser" resultType="org.javaboy.mybatis.bean.User"> select * from t_user; </select> </mapper>
UserMapper2
import org.javaboy.mybatis.bean.User; import java.util.List; //@Mapper public interface UserMapper2{ // @Select("select * from t_user") List<User> getAllUser(); }
UserMapper2.xml
<?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="org.javaboy.mybatis.mapper2.UserMapper2"> <select id="getAllUser" resultType="org.javaboy.mybatis.bean.User"> select * from t_user; </select> </mapper>
application.properties 配置文件
spring.datasource.one.url=jdbc:mysql:///test01 spring.datasource.one.username=root spring.datasource.one.password=root spring.datasource.one.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.one.driver-class-name=com.mysql.jdbc.Driver spring.datasource.two.url=jdbc:mysql:///test02 spring.datasource.two.username=root spring.datasource.two.password=root spring.datasource.two.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.two.driver-class-name=com.mysql.jdbc.Driver
标签：conf url iba play factor ace depend 实现 can
原文地址：https://www.cnblogs.com/JonaLin/p/11304005.html
