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springboot配置多数据源mysql+TDengine保姆级教程

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文章目录

前言

Mybatis-plus管理多数据源，数据库为mysql和TDengine。

一、pom文件

 <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.28</version>
<!--            <scope>runtime</scope>-->
        </dependency>
        <!--connection pool-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.2.8</version>
        </dependency>
        <dependency>
            <groupId>com.taosdata.jdbc</groupId>
            <artifactId>taos-jdbcdriver</artifactId>
            <version>3.2.7</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.7</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.5.1</version>
        </dependency>

二、yaml

spring:
  datasource:
#    driver-class-name: com.mysql.cj.jdbc.Driver
#    url: jdbc:mysql://127.0.0.1:3306/wh_vehicles?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=Asia/Shanghai
#    username: root
#    password: Lucky#2024
    dynamic:
      primary: master # 设置默认的数据源
      strict: false # 严格按照路由规则从主库读取数据，如果主库不可用，则从从库读取数据。
      datasource:
        master:
          driver-class-name: com.mysql.cj.jdbc.Driver
          url: jdbc:mysql://127.0.0.1:3306/wh_vehicles?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=Asia/Shanghai
          username: root
          password: 123
        slave:
          driver-class-name: com.taosdata.jdbc.rs.RestfulDriver
          url: jdbc:TAOS-RS://localhost:6041?timezone=UTC-8&charset=utf-8&useSSL=false&user=root&password=123
          # using connection pools
          type: com.alibaba.druid.pool.DruidDataSource
          druid:
            initial-size: 5
            min-idle: 5
            max-active: 20
            max-wait: 60000
            time-between-eviction-runs-millis: 60000
            min-evictable-idle-time-millis: 300000
            validation-query: SELECT 1
            pool-prepared-statements: true
            max-pool-prepared-statement-per-connection-size: 20
# mybatis
mybatis-plus:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: org.zqh.jt808.server.model

DataSourceConfig

package org.zqh.jt808.server.config;

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.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

@Configuration
public class DataSourceConfig {

    // 主数据源 master
    @Bean(name = "masterDataSource")
    @ConfigurationProperties(prefix = "spring.dynamic.datasource.master")
    public DataSource masterDataSource() {
        return DataSourceBuilder.create().build();
    }

    // 从数据源 slave
    @Bean(name = "slaveDataSource")
    @ConfigurationProperties(prefix = "spring.dynamic.datasource.slave")
    public DataSource slaveDataSource() {
        return DataSourceBuilder.create().build();
    }
    // 主数据源的 SqlSessionFactory
    @Primary
    @Bean(name = "masterSqlSessionFactory")
    public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        // 这里可以添加其他 MyBatis 配置，如 mapperLocations, typeAliases 等
        String locationPattern = "classpath*:/mapper/*.xml";
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        sqlSessionFactoryBean.setMapperLocations(resolver.getResources(locationPattern));
        return sqlSessionFactoryBean.getObject();
    }

    // 从数据源的 SqlSessionFactory
    @Bean(name = "slaveSqlSessionFactory")
    public SqlSessionFactory slaveSqlSessionFactory(@Qualifier("slaveDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        // 这里可以添加其他 MyBatis 配置，如 mapperLocations, typeAliases 等
        // 注意：通常从数据源的 mapperLocations 和 typeAliases 应该与主数据源分开配置
        String locationPattern = "classpath*:/mapper/*.xml";
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        sqlSessionFactoryBean.setMapperLocations(resolver.getResources(locationPattern));
        return sqlSessionFactoryBean.getObject();
    }
}

Service

package org.zqh.jt808.server.service;

import cn.hutool.json.JSONObject;
import com.baomidou.dynamic.datasource.annotation.DS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.zqh.jt808.server.mapper.TDMapper;
import org.zqh.jt808.server.model.LocationInfo;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

@Service
public class TDService {

    // 超级表名称和子表模板
    private static final String SUPER_TABLE_NAME = "device_locations";
    private static final String SUB_TABLE_PREFIX = "device_";

    @Autowired
    private TDMapper tdMapper;

    /**
     * 保存坐标数据
     * @param locationInfo
     */
    @DS("slave")
    public void saveLocation(LocationInfo locationInfo) {
        tdMapper.saveLocation(locationInfo);
    }

    /**
     * 查询实时位置-全部
     * @return
     */
    @DS("slave")
    public List<LocationInfo> queryLocationAll() {
        return tdMapper.queryLocationAll();
    }

    /**
     * 查询历史轨迹
     * @param deviceId 设备id
     * @param startTime 开始时间
     * @param endTime 结束时间
     * @return
     */
    @DS("slave")
    public List<LocationInfo> queryLocationHistory(String deviceId, Long startTime, Long endTime) {
        return tdMapper.queryLocationHistory(deviceId,startTime,endTime);
    }

    /**
     * 查询实时位置-指定设备列表
     * @param deviceIds 设备id列表
     * @return
     */
    @DS("slave")
    public List<LocationInfo> queryLocations(List<String> deviceIds) {
        if(deviceIds.size()>0){
            return tdMapper.queryLocations(deviceIds);
        }else {
            return new ArrayList<>();
        }
    }

    @DS("slave")
    public JSONObject queryLocation(String deviceId) {
        return tdMapper.queryLocation(deviceId);
    }
}

Mapper.xml

<?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="org.zqh.jt808.server.mapper.TDMapper">
    <insert id="saveLocation">
        INSERT INTO wh_special_equipment.device_locations (tbname, ts, longitude, latitude, height, speed, direction, deviceid)
        VALUES (#{tname}, #{ts}, #{longitude}, #{latitude}, #{height}, #{speed}, #{direction}, #{deviceId})
    </insert>
    <select id="queryLocationHistory" resultType="org.zqh.jt808.server.model.LocationInfo">
        <![CDATA[
        select * from wh_special_equipment.device_locations where deviceid= #{deviceId} and ts >= #{startTime} and ts <= #{endTime};
        ]]>
    </select>
    <select id="queryLocations" resultType="org.zqh.jt808.server.model.LocationInfo">
        select last_row(deviceId),* from wh_special_equipment.device_locations
        where deviceId IN
        <foreach item="deviceId" index="index" collection="list" open="(" separator="," close=")">
            #{deviceId}
        </foreach>
        group by deviceId;
    </select>
    <select id="queryLocationAll" resultType="org.zqh.jt808.server.model.LocationInfo">
        select tbname,last_row(deviceId),* from wh_special_equipment.device_locations
        group by tbname;
    </select>
    <select id="queryLocation" resultType="cn.hutool.json.JSONObject">
        select last_row(deviceId),deviceId,ts,longitude,latitude,height,speed,direction
        from wh_special_equipment.device_locations
        where deviceId = #{deviceId}
    </select>
</mapper>

测试

package org.zqh.jt808.server.test;

import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.zqh.jt808.server.service.ApiService;
import org.zqh.jt808.server.service.TDService;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@SpringBootTest
@Slf4j
class DBTest {
    @Resource
    private ApiService apiService;
    @Resource
    private TDService tdService;

    @Test
    public void td() {
        System.out.println(apiService.queryTD());
    }
    @Test
    public void mysql() {
        log.debug("{}",apiService.queryMySql());
    }

    /**
     * 查询所有坐标
     */
    @Test
    public void testLocationAll() {
        log.debug("{}",tdService.queryLocationAll());
    }

    /**
     * 查询所有坐标-设备列表
     */
    @Test
    public void testLocations() {
        List<String> list = new ArrayList<>();
        list.add("00000000000040904004");
        log.debug("{}",tdService.queryLocations(list));
    }

    /**
     * 查询实时坐标-单设备
     */
    @Test
    public void testLocation() {
        log.info("{}",tdService.queryLocation("00000000000040904004"));
    }

    /**
     * 查询历史轨迹
     */
    @Test
    public void testLocationHistory() {
        List<String> list = new ArrayList<>();
        list.add("00000000000040904004");
        Map<String, List<String>> map = new HashMap<>();
        map.put("deviceIds",list);
        String deviceId = "00000000000040904004";
        long startTime = System.currentTimeMillis();
        long endTime = System.currentTimeMillis();
        log.debug("{}",tdService.queryLocationHistory(deviceId,startTime,endTime));
    }
}

总结

直接执行测试类，执行成功查看数据库即可

悦读

道可道，非常道；名可名，非常名。 无名，天地之始，有名，万物之母。 故常无欲，以观其妙，常有欲，以观其徼。 此两者，同出而异名，同谓之玄，玄之又玄，众妙之门。

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