97 lines
3.0 KiB
Markdown
97 lines
3.0 KiB
Markdown
## TDengine SpringBoot + Mybatis Demo
|
|
|
|
### 配置 application.properties
|
|
```properties
|
|
# datasource config
|
|
spring.datasource.driver-class-name=com.taosdata.jdbc.TSDBDriver
|
|
spring.datasource.url=jdbc:TAOS://127.0.0.1:6030/log
|
|
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
|
|
# max wait time for get connection, ms
|
|
spring.datasource.druid.max-wait=60000
|
|
|
|
spring.datasource.druid.validation-query=select server_status();
|
|
spring.datasource.druid.validation-query-timeout=5000
|
|
spring.datasource.druid.test-on-borrow=false
|
|
spring.datasource.druid.test-on-return=false
|
|
spring.datasource.druid.test-while-idle=true
|
|
spring.datasource.druid.time-between-eviction-runs-millis=60000
|
|
spring.datasource.druid.min-evictable-idle-time-millis=600000
|
|
spring.datasource.druid.max-evictable-idle-time-millis=900000
|
|
|
|
# mybatis
|
|
mybatis.mapper-locations=classpath:mapper/*.xml
|
|
|
|
# log
|
|
logging.level.com.taosdata.jdbc.springbootdemo.dao=debug
|
|
```
|
|
|
|
### 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="com.taosdata.jdbc.springbootdemo.domain.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="com.taosdata.jdbc.springbootdemo.dao.WeatherMapper">
|
|
|
|
<resultMap id="BaseResultMap" type="com.taosdata.jdbc.springbootdemo.domain.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>
|
|
```
|
|
|