Java 双数据源
念旧、sunshine 人气:0使用方式
application.properties中数据库配置
#数据库配置
spring.datasource.db1.jdbc-url=jdbc:mysql://localhost:3306/gds?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false
spring.datasource.db1.username=root
spring.datasource.db1.password=root
spring.datasource.db1.driver-class-name=com.mysql.cj.jdbc.Driverspring.datasource.db2.jdbc-url=jdbc:mysql://localhost:3306/zkhx?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false
spring.datasource.db2.username=root
spring.datasource.db2.password=root
spring.datasource.db2.driver-class-name=com.mysql.cj.jdbc.Driver
config文件配置
1、配置 spring.datasource.db1
注:basePackages=“com.zkhx.dao.master”:prefix= “spring.datasource.db1”
绑定master目录下使用的是数据库db1 也就是gds
package com.zkhx.config; 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.Qualifier; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.jdbc.DataSourceBuilder; 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 javax.sql.DataSource; @Configuration // 配置mybatis的接口类放的地方 @MapperScan(basePackages = "com.zkhx.dao.master", sqlSessionFactoryRef = "dbSqlSessionFactory") public class DataSourceConfig { @Bean(name = "db") @Primary @ConfigurationProperties(prefix = "spring.datasource.db1") public DataSource getDateSource1() { return DataSourceBuilder.create().build(); } @Bean @ConfigurationProperties(prefix = "mybatis.configuration") public org.apache.ibatis.session.Configuration configuration() { return new org.apache.ibatis.session.Configuration(); } @Bean(name = "dbSqlSessionFactory") @Primary public SqlSessionFactory test1SqlSessionFactory(@Qualifier("db") DataSource datasource, org.apache.ibatis.session.Configuration configuration) throws Exception { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(datasource); bean.setConfiguration(configuration); bean.setMapperLocations( // 设置mybatis的xml所在位置 new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/master/*.xml")); return bean.getObject(); } @Bean("dbSqlSessionTemplate") // 表示这个数据源是默认数据源 @Primary public SqlSessionTemplate test1sqlsessiontemplate( @Qualifier("dbSqlSessionFactory") SqlSessionFactory sessionfactory) { return new SqlSessionTemplate(sessionfactory); } }
2、配置 spring.datasource.db2
package com.zkhx.config; import org.mybatis.spring.annotation.MapperScan; import org.springframework.context.annotation.Configuration; import org.apache.ibatis.session.SqlSessionFactory; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.SqlSessionTemplate; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.jdbc.DataSourceBuilder; import org.springframework.context.annotation.Bean; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import javax.sql.DataSource; @Configuration @MapperScan(basePackages = "com.zkhx.dao.vice", sqlSessionFactoryRef = "db2SqlSessionFactory") public class DataSourceViceConfig { @Bean(name = "db2") @ConfigurationProperties(prefix = "spring.datasource.db2") public DataSource getDateSource2() { return DataSourceBuilder.create().build(); } @Bean(name = "db2SqlSessionFactory") public SqlSessionFactory test2SqlSessionFactory(@Qualifier("db2") DataSource datasource) throws Exception { SqlSessionFactoryBean bean = new SqlSessionFactoryBean(); bean.setDataSource(datasource); bean.setMapperLocations( new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/vice/*.xml")); return bean.getObject(); } @Bean("db2SqlSessionTemplate") public SqlSessionTemplate test2sqlsessiontemplate( @Qualifier("db2SqlSessionFactory") SqlSessionFactory sessionfactory) { return new SqlSessionTemplate(sessionfactory); } }
3、截图
<?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="com.zkhx.dao.vice.StDBDataDao"> </mapper>
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