SpringBoot 配置多数据源 dynamic-datasource（多库）

1.Maven 包

com.baomidou

dynamic-datasource-spring-boot-starter

3.1.1

2.配置文件

###MySQL druid多数据源配置（纯粹多库）###

#去除durid配置

spring.autoconfigure.exclude=com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure

#指定默认数据源(必须配置)

spring.datasource.dynamic.primary=db01

#设置严格模式,默认false不启动. 启动后在未匹配到指定数据源时候回抛出异常,不启动会使用默认数据源.

spring.datasource.dynamic.strict=false

#db01库

spring.datasource.dynamic.datasource.db01.driver-class-name=com.mysql.cj.jdbc.Driver

spring.datasource.dynamic.datasource.db01.url=jdbc:mysql://X.X.X.X:3306/DB-Name?serverTimezone=GMT&useSSL=false

spring.datasource.dynamic.datasource.db01.username=XXX

spring.datasource.dynamic.datasource.db01.password=XXXX

#db02库

spring.datasource.dynamic.datasource.db02.driver-class-name=com.mysql.cj.jdbc.Driver

spring.datasource.dynamic.datasource.db02.url=jdbc:mysql://X.X.X.X:3306/DB-Name?serverTimezone=GMT&useSSL=false

spring.datasource.dynamic.datasource.db02.username=XXX

spring.datasource.dynamic.datasource.db02.password=XXXX

#数据源基础配置

spring.datasource.dynamic.druid.initial-size=5

spring.datasource.dynamic.druid.min-idle=5

spring.datasource.dynamic.druid.max-active=20

# 配置获取连接等待超时的时间

spring.datasource.dynamic.druid.max-wait=6000

# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒

spring.datasource.dynamic.druid.time-between-eviction-runs-millis=60000

# 配置一个连接在池中最小生存的时间，单位是毫秒

spring.datasource.dynamic.druid.min-evictable-idle-time-millis=300000

spring.datasource.dynamic.druid.validation-query=SELECT 1 FROM DUAL

spring.datasource.dynamic.druid.test-while-idle=true

spring.datasource.dynamic.druid.test-on-borrow=false

spring.datasource.dynamic.druid.test-on-return=false

# 打开PSCache，并且指定每个连接上PSCache的大小

spring.datasource.dynamic.druid.pool-prepared-statements=true

spring.datasource.dynamic.druid.max-pool-prepared-statement-per-connection-size=20

# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙

spring.datasource.dynamic.druid.filters=stat,wall,log4j

# 通过connectProperties属性来打开mergeSql功能；慢SQL记录

spring.datasource.dynamic.druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

3.示例代码

@Mapper

@DS("db01")

public interface InfoDao {

@Select("SELECT name,address FROM table_name WHERE id = #{id}")

> getInfos(@Param("id") int id);

}

==============================================

@Mapper

@DS("db02")

public interface UserDao {

@Select("SELECT xx,xx,xx FROM table_name WHERE id = #{id}")

> getUser(@Param("id") int id);

}