springboot整合mybatis（多数据源）

1，application.yml 配置

spring:
  datasource:
    primary:
      jdbc-url: jdbc:mysql://localhost:3306/cloakroom_business?characterEncoding=utf8&serverTimezone=GMT%2b8&connectTimeout=5000&socketTimeout=30000&allowMultiQueries=true
      username: root
      password: 123456
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: com.zaxxer.hikari.HikariDataSource
      poolName: testOneDB
      maximum-pool-size: 15
      max-lifetime: 180000
      idle-timeout: 50000
      connection-timeout: 10000
      minimum-idle: 5
      connection-test-query: SELECT 1
    second:
      jdbc-url: jdbc:mysql://198.101.526.66:3306/cloakroom_business?characterEncoding=utf8&serverTimezone=GMT%2b8&connectTimeout=5000&socketTimeout=30000&allowMultiQueries=true
      username: root
      password: 132467896
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: com.zaxxer.hikari.HikariDataSource
      poolName: testSecondDB
      maximum-pool-size: 15
      max-lifetime: 180000
      idle-timeout: 50000
      connection-timeout: 10000
      minimum-idle: 5
      connection-test-query: SELECT 1

2，java代码配置文件
（1）第一个数据源

package com.mine.cloakroom.config;

import com.zaxxer.hikari.HikariDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

@Configuration
@MapperScan(basePackages = "com.mine.cloakroom.dao", sqlSessionFactoryRef = "primarySqlSessionFactory")// sqlSessionFactoryRef 一定要加上， 指定用哪个sqlSessionFactory扫描dao
public class DataSource1Config {


    @Bean(name = "primaryDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.primary")
    public DataSource testDataSource() {
        return new HikariDataSource();
    }

    @Bean(name = "primarySqlSessionFactory")
    @Primary
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("primaryDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/*/*Mapper.xml"));
        return bean.getObject();
    }

    @Bean(name = "primaryTransactionManager")
    public DataSourceTransactionManager testTransactionManager(@Qualifier("primaryDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }


}

（2）第二个数据源

package com.mine.cloakroom.config;

import com.zaxxer.hikari.HikariDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

@Configuration
@MapperScan(basePackages = "com.mine.cloakroom.dao2", sqlSessionFactoryRef = "secondSqlSessionFactory")// sqlSessionFactoryRef 一定要加上， 指定用哪个sqlSessionFactory扫描dao
public class DataSource2Config {

    @Bean(name = "secondDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.second")
    public DataSource testDataSource() {
//        return DataSourceBuilder.create().build(); // 这个也可行
        return new HikariDataSource();
    }

    @Bean(name = "secondSqlSessionFactory")
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("secondDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper2/*/*Mapper.xml"));
        return bean.getObject();
    }

    @Bean(name = "secondTransactionManager")
    public DataSourceTransactionManager testTransactionManager(@Qualifier("secondDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

}