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Mysql多数据源Springboot+mybatis+druid+dynamic-datasource

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一、添加POM引用

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>MySQL-Test</artifactId>
        <groupId>org.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>DynamicDatabase</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.1.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.1</version>
        </dependency>
        <!--mybatis驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.17</version>
        </dependency>
        <!--druid数据源-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.16</version>
        </dependency>
        <!-- 动态数据源 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
        </dependency>
        <!--lombok实体工具-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!--swagger2-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.8.0</version>
        </dependency>
    </dependencies>

</project>

二、配置连接属性

server:
  port: 8088
spring:
  application:
    name: DynamicDatabase
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    dynamic:
      primary: master
      datasource:
#        主数据库
        master:
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/aamm1?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
          username: root
          password: 123456
#          从数据库
        slave:
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/aamm2?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
          username: root
          password: 123456
      druid:
        initialSize: 5
        minIdle: 5
        maxActive: 20
        maxWait: 60000
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1 FROM DUAL
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        maxPoolPreparedStatementPerConnectionSize: 20
        spring.datasource.filters: stat,wall,log4j
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
mybatis-plus:
  type-aliases-package: com.lubansoft.model

三、代码

1、Application代码

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication(exclude = DruidDataSourceAutoConfigure.class)
public class Application {
    public static void main(String[] args)
    {
        SpringApplication.run(Application.class);
    }
}

2、Mapper代码

import com.lubansoft.model.Poi;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;

@Mapper
public interface  PoiMapper {
    @Insert({"<script>" ,
            "insert into poi (id,poiid, title, address,lon, lat, city, category_name, checkin_num, photo_num) values ",
            "      <foreach collection = 'pois' item = 'poi' index = 'index' open=\"(\" close=\")\" separator = ','> ",
            "         (#{poi.id},#{poi.poiid},#{poi.title},#{poi.address},#{poi.lon},#{poi.lat},#{poi.city},#{poi.category_name},#{poi.checkin_num},#{poi.photo_num}) ",
            "     </foreach> ",
            "</script>"})
    void insert(@Param("pois") List<Poi> poi);

    @Select({"<script>" ,
            "select * from poi  ",
            "</script>"})
    List<Poi> getAll();
}

3、controller代码

import com.lubansoft.model.Poi;
import com.lubansoft.service.Poi1Service;
import com.lubansoft.service.PoiService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.Arrays;
import java.util.List;

@RequestMapping("/poi")
@RestController
@Api("PoiController")
public class PoiController {
    @Autowired
    private PoiService poiService;
    @Autowired
    private Poi1Service poi1Service;

    @ApiOperation("insert")
    @PostMapping("/insert")
    public String insert(@RequestParam("poi") Poi poi){
        poiService.insert(Arrays.asList(poi));
        return "插入成功";
    }

    @ApiOperation("获取全部主数据库")
    @GetMapping("/getAll")
    public List<Poi> getAll(){
        return poiService.getAll();
    }

    @ApiOperation("获取全部从数据库")
    @GetMapping("/getAll1")
    public List<Poi> getAll1(){
        return poi1Service.getAll();
    }
}

4、model

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Getter;
import lombok.Setter;

@ApiModel("Poi")
@Getter
@Setter
public class Poi {
    @ApiModelProperty("id")
    private String id;
    @ApiModelProperty("poiid")
    private String poiid;
    @ApiModelProperty("title")
    private String title;
    @ApiModelProperty("address")
    private String address;
    @ApiModelProperty("lon")
    private String lon;
    @ApiModelProperty("lat")
    private String lat;
    @ApiModelProperty("city")
    private String city;
    @ApiModelProperty("category_name")
    private String category_name;
    @ApiModelProperty("checkin_num")
    private String checkin_num;
    @ApiModelProperty("photo_num")
    private String photo_num;
}

5、services

import com.baomidou.dynamic.datasource.annotation.DS;
import com.lubansoft.mapper.PoiMapper;
import com.lubansoft.model.Poi;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@DS("master")
@Service
public class PoiService {
    @Autowired
    PoiMapper poiMapper;

    public Boolean insert(List<Poi> pois){
        poiMapper.insert(pois);
        return Boolean.TRUE;
    }

    public List<Poi> getAll(){
        return poiMapper.getAll();
    }
}
import com.baomidou.dynamic.datasource.annotation.DS;
import com.lubansoft.mapper.PoiMapper;
import com.lubansoft.model.Poi;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@DS("slave")
@Service
public class Poi1Service {
    @Autowired
    PoiMapper poiMapper;

    public Boolean insert(List<Poi> pois){
        poiMapper.insert(pois);
        return Boolean.TRUE;
    }

    public List<Poi> getAll(){
        return poiMapper.getAll();
    }
}

 

6、swagger

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

@Configuration
public class SwaggerConfig {
    Boolean swaggerEnabled=true;
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_12).apiInfo(apiInfo())
                // 是否开启
                .enable(swaggerEnabled).select()
                // 扫描的路径包
                .apis(RequestHandlerSelectors.basePackage("com.test.controller"))
                // 指定路径处理PathSelectors.any()代表所有的路径
                .paths(PathSelectors.any()).build().pathMapping("/");
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("SpringBoot-Swagger3集成和使用-demo示例")
                .description("springboot | swagger")
                // 作者信息
                .contact(new Contact("name", "个人主页url", "email"))
                .version("1.0.0")
                .build();
    }
}
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