springbootdemo.rar

## 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=describe log.dn 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> ```