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springboot-tdengine-demo
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  1. 30
      .gitignore
  2. 88
      README.md
  3. 96
      pom.xml
  4. 14
      src/main/java/com/taosdata/example/springboot/tdengine/demo/SpringbootTdengineDemoApplication.java
  5. 98
      src/main/java/com/taosdata/example/springboot/tdengine/demo/controller/WeatherController.java
  6. 35
      src/main/java/com/taosdata/example/springboot/tdengine/demo/dao/WeatherMapper.java
  7. 108
      src/main/java/com/taosdata/example/springboot/tdengine/demo/dao/WeatherMapper.xml
  8. 70
      src/main/java/com/taosdata/example/springboot/tdengine/demo/domain/Weather.java
  9. 76
      src/main/java/com/taosdata/example/springboot/tdengine/demo/service/WeatherService.java
  10. 18
      src/main/resources/application.properties

30
.gitignore vendored
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.mvn/
target/
!**/src/main/**
!**/src/test/**
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
### VS Code ###
.vscode/

88
README.md
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## TDengine SpringBoot + Mybatis Demo
### 配置 application.properties
```properties
# datasource config - JDBC-RESTful
spring.datasource.driver-class-name=com.taosdata.jdbc.rs.RestfulDriver
spring.datasource.url=jdbc:TAOS-RS://你的IP地址:6041/demo?timezone=UTC-8&charset=UTF-8&locale=en_US.UTF-8
spring.datasource.username=root
spring.datasource.password=taosdata
spring.datasource.druid.initial-size=5
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=5
spring.datasource.druid.max-wait=30000
spring.datasource.druid.validation-query=select server_status();
#mybatis
#mybatis.mapper-locations=classpath:mapper/*.xml
logging.level.com.taosdata.example.springbootdemo.dao=debug
server.port=8081
```
### 主要功能
* 创建数据库和表
```xml
<!-- weatherMapper.xml -->
<update id="createDB" >
create database if not exists test;
</update>
<update id="createTable" >
create table if not exists test.weather(ts timestamp, temperature int, humidity float);
</update>
```
* 插入单条记录
```xml
<!-- weatherMapper.xml -->
<insert id="insert" parameterType="Weather" >
insert into test.weather (ts, temperature, humidity) values (now, #{temperature,jdbcType=INTEGER}, #{humidity,jdbcType=FLOAT})
</insert>
```
* 插入多条记录
```xml
<!-- weatherMapper.xml -->
<insert id="batchInsert" parameterType="java.util.List" >
insert into test.weather (ts, temperature, humidity) values
<foreach separator=" " collection="list" item="weather" index="index" >
(now + #{index}a, #{weather.temperature}, #{weather.humidity})
</foreach>
</insert>
```
* 分页查询
```xml
<!-- weatherMapper.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="WeatherMapper">
<resultMap id="BaseResultMap" type="Weather">
<id column="ts" jdbcType="TIMESTAMP" property="ts" />
<result column="temperature" jdbcType="INTEGER" property="temperature" />
<result column="humidity" jdbcType="FLOAT" property="humidity" />
</resultMap>
<sql id="Base_Column_List">
ts, temperature, humidity
</sql>
<select id="select" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from test.weather
order by ts desc
<if test="limit != null">
limit #{limit,jdbcType=BIGINT}
</if>
<if test="offset != null">
offset #{offset,jdbcType=BIGINT}
</if>
</select>
</mapper>
```

96
pom.xml
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<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.taosdata.example</groupId>
<artifactId>springboot-tdengine-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-tdengine-demo</name>
<description>Demo project for using tdengine with Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>com.taosdata.jdbc</groupId>
<artifactId>taos-jdbcdriver</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.17</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

14
src/main/java/com/taosdata/example/springboot/tdengine/demo/SpringbootTdengineDemoApplication.java
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package com.taosdata.example.springboot.tdengine.demo;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@MapperScan(basePackages = {"com.taosdata.example.springboot.tdengine.demo.dao"})
@SpringBootApplication
public class SpringbootTdengineDemoApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootTdengineDemoApplication.class, args);
}
}

98
src/main/java/com/taosdata/example/springboot/tdengine/demo/controller/WeatherController.java
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package com.taosdata.example.springboot.tdengine.demo.controller;
import com.taosdata.example.springboot.tdengine.demo.domain.Weather;
import com.taosdata.example.springboot.tdengine.demo.service.WeatherService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RequestMapping("/weather")
@RestController
public class WeatherController {
@Autowired
private WeatherService weatherService;
/**
* create database and table
* 初始化
* @return
*/
@GetMapping("/init")
public int init() {
return weatherService.init();
}
/**
* Pagination Query
* 分页查询
* @param limit
* @param offset
* @return
*/
@GetMapping("/{limit}/{offset}")
public List<Weather> queryWeather(@PathVariable Long limit, @PathVariable Long offset) {
return weatherService.query(limit, offset);
}
/**
* upload single weather info
* 新增天气数据
* @param temperature
* @param humidity
* @return
*/
@PostMapping("/{temperature}/{humidity}")
public int saveWeather(@PathVariable float temperature, @PathVariable float humidity) {
return weatherService.save(temperature, humidity);
}
/**
* 批量插入
* @param weatherList
* @return
*/
@PostMapping("/batch")
public int saveBatchWeather(@RequestBody List<Weather> weatherList) {
return weatherService.saveBatch(weatherList);
}
/**
* 查询数量
* @return
*/
@GetMapping("/count")
public int count() {
return weatherService.count();
}
/**
* 获取分表名称
* @return
*/
@GetMapping("/subTables")
public List<String> getSubTables() {
return weatherService.getSubTables();
}
/**
* 获取平均温度
* @return
*/
@GetMapping("/avg")
public List<Weather> avg() {
return weatherService.avg();
}
@GetMapping("/max")
public List<Weather> max() {
return weatherService.max();
}
@DeleteMapping("/delete/{number}")
public void delNumber(@PathVariable String number) {
weatherService.deleteTemperature(number);
}
}

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src/main/java/com/taosdata/example/springboot/tdengine/demo/dao/WeatherMapper.java
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package com.taosdata.example.springboot.tdengine.demo.dao;
import com.taosdata.example.springboot.tdengine.demo.domain.Weather;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface WeatherMapper {
void dropDB();
void createDB();
void createSuperTable();
void createTable(Weather weather);
List<Weather> select(@Param("limit") Long limit, @Param("offset") Long offset);
int insert(Weather weather);
int insertBatch(List<Weather> weatherList);
int count();
List<String> getSubTables();
List<Weather> avg();
List<Weather> max();
void deleteTemperature( @Param("number") String number);
}

108
src/main/java/com/taosdata/example/springboot/tdengine/demo/dao/WeatherMapper.xml
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<?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="com.taosdata.example.springboot.tdengine.demo.dao.WeatherMapper">
<resultMap id="BaseResultMap" type="com.taosdata.example.springboot.tdengine.demo.domain.Weather">
<id column="ts" jdbcType="TIMESTAMP" property="ts"/>
<result column="temperature" jdbcType="FLOAT" property="temperature"/>
<result column="humidity" jdbcType="FLOAT" property="humidity"/>
</resultMap>
<sql id="Base_Column_List">
ts, temperature, humidity, location, groupid
</sql>
<update id="dropDB">
drop database if exists demo
</update>
<update id="createDB">
create database if not exists demo
</update>
<update id="createSuperTable">
create table if not exists demo.weather(ts timestamp, temperature float, humidity float) tags(location nchar(64), groupId int)
</update>
<update id="createTable" parameterType="com.taosdata.example.springboot.tdengine.demo.domain.Weather">
create table if not exists demo.t#{groupId} using demo.weather tags(#{location}, #{groupId})
</update>
<select id="select" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"/>
from demo.weather order by ts desc
<if test="limit != null">
limit #{limit,jdbcType=BIGINT}
</if>
<if test="offset != null">
offset #{offset,jdbcType=BIGINT}
</if>
</select>
<insert id="insert" parameterType="com.taosdata.example.springboot.tdengine.demo.domain.Weather">
<!--insert into demo.t#{groupId} (ts, temperature, humidity) values (#{ts}, ${temperature}, ${humidity})-->
insert into demo.t#{groupId} (ts, temperature, humidity) values (now, ${temperature}, ${humidity})
</insert>
<!-- <insert id="insertBatch" parameterType="java.util.List">-->
<!-- insert into demo.t0 (ts, temperature, humidity) values-->
<!-- <foreach separator=" " collection="list" item="weather" index="index" >-->
<!-- &lt;!&ndash; 参考涛思数据官方文档：https://www.taosdata.com/cn/documentation/taos-sql#data-type-->
<!-- 数字后面的时间单位可以是 u(微秒)、a(毫秒)、s(秒)、m(分)、h(小时)、d(天)、w(周)-->
<!-- 在指定降频操作（down sampling）的时间窗口（interval）时，时间单位还可以使用 n(自然月) 和 y(自然年)。&ndash;&gt;-->
<!-- (now + #{index}a, #{weather.temperature}, #{weather.humidity})-->
<!-- </foreach>-->
<!-- </insert>-->
<!--用这种写法，直接使用前端传过来的时间戳，报错：uncategorized SQLException; SQL state []; error code [534]; TDengine ERROR (216): Syntax error in SQL; -->
<!-- <insert id="insertBatch" parameterType="java.util.List">-->
<!-- insert into demo.t0 (ts, temperature, humidity) values-->
<!-- <foreach separator=" " collection="list" item="weather" index="index">-->
<!-- (#{weather.ts}, #{weather.temperature}, #{weather.humidity})-->
<!-- </foreach>-->
<!-- </insert>-->
<insert id="insertBatch" parameterType="java.util.List">
insert into
<foreach separator=" " collection="list" item="weather" index="index">
demo.t0 values
(#{weather.ts}, #{weather.temperature}, #{weather.humidity})
</foreach>
</insert>
<select id="getSubTables" resultType="String">
select tbname from demo.weather
</select>
<select id="count" resultType="int">
select count(*) from demo.weather
</select>
<resultMap id="avgResultSet" type="com.taosdata.example.springboot.tdengine.demo.domain.Weather">
<id column="ts" jdbcType="TIMESTAMP" property="ts"/>
<result column="avg(temperature)" jdbcType="FLOAT" property="temperature"/>
<result column="avg(humidity)" jdbcType="FLOAT" property="humidity"/>
</resultMap>
<select id="avg" resultMap="avgResultSet">
select avg(temperature), avg(humidity)from demo.weather interval(1m)
</select>
<resultMap id="maxResultSet" type="com.taosdata.example.springboot.tdengine.demo.domain.Weather">
<id column="ts" jdbcType="TIMESTAMP" property="ts"/>
<result column="max(temperature)" jdbcType="FLOAT" property="temperature"/>
<result column="max(humidity)" jdbcType="FLOAT" property="humidity"/>
</resultMap>
<select id="max" resultMap="maxResultSet">
select max(temperature), max(humidity) from demo.weather interval(1m)
</select>
<delete id="deleteTemperature" >
delete from demo.weather where ts = #{number}
</delete>
</mapper>

70
src/main/java/com/taosdata/example/springboot/tdengine/demo/domain/Weather.java
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package com.taosdata.example.springboot.tdengine.demo.domain;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonInclude;
import java.sql.Timestamp;
@JsonInclude(JsonInclude.Include.NON_NULL)
public class Weather {
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss.SSS", timezone = "GMT+8")
private Timestamp ts;
// 温度
private Float temperature;
// 湿度
private Float humidity;
// 地址
private String location;
// 分组
private int groupId;
public Weather() {
}
public Weather(Timestamp ts, float temperature, float humidity) {
this.ts = ts;
this.temperature = temperature;
this.humidity = humidity;
}
public Timestamp getTs() {
return ts;
}
public void setTs(Timestamp ts) {
this.ts = ts;
}
public Float getTemperature() {
return temperature;
}
public void setTemperature(Float temperature) {
this.temperature = temperature;
}
public Float getHumidity() {
return humidity;
}
public void setHumidity(Float humidity) {
this.humidity = humidity;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public int getGroupId() {
return groupId;
}
public void setGroupId(int groupId) {
this.groupId = groupId;
}
}

76
src/main/java/com/taosdata/example/springboot/tdengine/demo/service/WeatherService.java
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package com.taosdata.example.springboot.tdengine.demo.service;
import com.taosdata.example.springboot.tdengine.demo.domain.Weather;
import com.taosdata.example.springboot.tdengine.demo.dao.WeatherMapper;
import org.springframework.stereotype.Service;
import java.sql.Timestamp;
import java.util.List;
import java.util.Random;
@Service
public class WeatherService {
private final WeatherMapper weatherMapper;
public WeatherService(WeatherMapper weatherMapper) {
this.weatherMapper = weatherMapper;
}
private Random random = new Random(System.currentTimeMillis());
private String[] locations = {"北京", "上海", "广州", "深圳", "天津"};
public int init() {
weatherMapper.dropDB();
weatherMapper.createDB();
weatherMapper.createSuperTable();
long ts = System.currentTimeMillis();
long thirtySec = 1000 * 30;
int count = 0;
for (int i = 0; i < 20; i++) {
Weather weather = new Weather(new Timestamp(ts + (thirtySec * i)), 30 * random.nextFloat(), random.nextInt(100));
weather.setLocation(locations[random.nextInt(locations.length)]);
weather.setGroupId(i % locations.length);
weatherMapper.createTable(weather);
count += weatherMapper.insert(weather);
}
return count;
}
public List<Weather> query(Long limit, Long offset) {
return weatherMapper.select(limit, offset);
}
public int save(float temperature, float humidity) {
Weather weather = new Weather();
// weather.setTs(new Timestamp(System.currentTimeMillis()));
weather.setTemperature(temperature);
weather.setHumidity(humidity);
return weatherMapper.insert(weather);
}
public int saveBatch(List<Weather> weatherList) {
return weatherMapper.insertBatch(weatherList);
}
public int count() {
return weatherMapper.count();
}
public List<String> getSubTables() {
return weatherMapper.getSubTables();
}
public List<Weather> avg() {
return weatherMapper.avg();
}
public List<Weather> max() {
return weatherMapper.max();
}
public void deleteTemperature(String number) {
weatherMapper.deleteTemperature(number);
}
}

18
src/main/resources/application.properties
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# datasource config - JDBC-RESTful
spring.datasource.driver-class-name=com.taosdata.jdbc.rs.RestfulDriver
spring.datasource.url=jdbc:TAOS-RS://47.97.5.58:6041/demo?charset=UTF-8&locale=en_US.UTF-8
spring.datasource.username=root
spring.datasource.password=taosdata
spring.datasource.druid.initial-size=5
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=5
spring.datasource.druid.max-wait=30000
spring.datasource.druid.validation-query=select server_status();
#mybatis
#mybatis.mapper-locations=classpath:mapper/*.xml
logging.level.com.taosdata.example.springboot.tdengine.demo.dao=debug
server.port=8081
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