168-springboot集成(二)：mybatis-plus多数据源配置

pom 引入依赖：

<dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>${dynamic-datasource-spring-boot-starter.version}</version>
        </dependency>

application.yml

spring:
  datasource:
    dynamic:
      primary: master #设置默认的数据源或者数据源组,默认值即为master
      strict: false #严格匹配数据源,默认false. true未匹配到指定数据源时抛异常,false使用默认数据源
      datasource:
        master:
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3306/ry?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
          username: root
          password: 123456
        slave_1:
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3306/fz_sqjw?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
          username: root
          password: 123456
        slave_2:
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3306/qz_sqjw?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
          username: root
          password: 123456
        #......省略
        #以上会配置一个默认库master，一个组slave下有两个子库slave_1,slave_2

TestOneServiceImpl.java

package com.demo.frame.test.service;

import com.baomidou.dynamic.datasource.annotation.DS;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.demo.frame.test.dao.TestOneMapper;
import com.demo.frame.test.entity.TestOne;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * desc
 *
 * @author lw007
 * @date 2021/12/21
 */
@Service
@DS("slave")
public class TestOneServiceImpl extends ServiceImpl<TestOneMapper,TestOne> {
    @Autowired
    private TestOneMapper testOneMapper;
    //查询全部
    public List<TestOne> queryAll() {
        return testOneMapper.selectList(null);
    }

    public Page<TestOne> list2(Page<TestOne> page){
        page = baseMapper.selectPage(page,null);
        return page;
    }

    @DS("slave_1")
    public Page<TestOne> list3(Page<TestOne> page){
        page = baseMapper.selectPage(page,null);
        return page;
    }
    @DS("slave_2")
    public Page<TestOne> list4(Page<TestOne> page){
        page = baseMapper.selectPage(page,null);
        return page;
    }
}