springboot 配置多数据源 mysql&postgres

1.引入maven 相关驱动

        <!-- 多数据源 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.2.8</version>
        </dependency>
        <!-- postgresql依赖 -->
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.31</version>
        </dependency>

2.application.properties 文件配置

###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://wecommysqldev.mysql.database.chinacloudapi.cn:3306/bonussimulation
spring.datasource.dynamic.datasource.db01.username=wecom
spring.datasource.dynamic.datasource.db01.password=QweAsd123#@!
#db02库
spring.datasource.dynamic.datasource.wecom.driver-class-name=org.postgresql.Driver
spring.datasource.dynamic.datasource.wecom.url=jdbc:postgresql://wecompostgresdev-p.postgres.database.chinacloudapi.cn:5432/postgres?currentSchema=user&useSSL=false
spring.datasource.dynamic.datasource.wecom.username=wecom_readonly@wecompostgresdev-p
spring.datasource.dynamic.datasource.wecom.password=Wecom#eDc@voc
#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  'Hello Jack'  as  txt
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使用多数据源

package com.springboot.model.mapper;

import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.springboot.model.entity.OrganizeStructure;
import com.springboot.model.entity.vo.OrgVO;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * <p>
 * 组织架构表 Mapper 接口
 * </p>
 *
 * @author xingguohao
 * @since 2022-10-31
 */
@Mapper
@Repository
public interface OrganizeStructureMapper extends BaseMapper<OrganizeStructure> {

    @DS("wecom")
    List<OrgVO> getWecomOrgList();

    @DS("wecom")
    OrgVO getParentOrg(@Param("parentId") Long parentId);

    @DS("wecom")
    List<OrganizeStructure> fetchOrganizeStructureList();

}