change

tests/examples/JDBC/springbootdemo/src/main/java/com/taosdata/example/springbootdemo/controller/WeatherController.java

@@ -6,6 +6,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
+import java.util.Map;
 
 @RequestMapping("/weather")
 @RestController
@@ -58,4 +59,9 @@ public class WeatherController {
         return weatherService.getSubTables();
     }
 
+    @GetMapping("/avg")
+    public Map avg() {
+        return weatherService.avg();
+    }
+
 }

tests/examples/JDBC/springbootdemo/src/main/java/com/taosdata/example/springbootdemo/dao/WeatherMapper.java

@@ -4,9 +4,12 @@ import com.taosdata.example.springbootdemo.domain.Weather;
 import org.apache.ibatis.annotations.Param;
 
 import java.util.List;
+import java.util.Map;
 
 public interface WeatherMapper {
 
+    void dropDB();
+
     void createDB();
 
     void createSuperTable();
@@ -20,4 +23,7 @@ public interface WeatherMapper {
     int count();
 
     List<String> getSubTables();
+
+    Map avg();
+
 }

tests/examples/JDBC/springbootdemo/src/main/java/com/taosdata/example/springbootdemo/dao/WeatherMapper.xml

@@ -9,16 +9,20 @@
         <result column="humidity" jdbcType="FLOAT" property="humidity"/>
     </resultMap>
 
+    <update id="dropDB">
+        drop database if exists test
+    </update>
+
     <update id="createDB">
         create database if not exists test
     </update>
 
     <update id="createSuperTable">
-        create table if not exists test.weather(ts timestamp, temporary float, humidity int) tags(location nchar(64), groupId int)
+        create table if not exists test.weather(ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int)
     </update>
 
     <update id="createTable" parameterType="com.taosdata.example.springbootdemo.domain.Weather">
-        create table test.t#{groupId} using test.weather tags(#{location}, #{groupId})
+        create table if not exists test.t#{groupId} using test.weather tags(#{location}, #{groupId})
     </update>
 
     <select id="select" resultMap="BaseResultMap">
@@ -32,7 +36,7 @@
     </select>
 
     <insert id="insert" parameterType="com.taosdata.example.springbootdemo.domain.Weather">
-        insert into test.t#{groupId} (ts, temperature, humidity) values (#{ts}, #{temperature}, #{humidity})
+        insert into test.t#{groupId} (ts, temperature, humidity) values (#{ts}, ${temperature}, ${humidity})
     </insert>
 
     <select id="getSubTables">
@@ -43,4 +47,8 @@
         select count(*) from test.weather
     </select>
 
+    <select id="avg" resultType="map">
+        select avg(temperature), avg(humidity)from test.weather interval(1m)
+    </select>
+
 </mapper>

tests/examples/JDBC/springbootdemo/src/main/java/com/taosdata/example/springbootdemo/service/WeatherService.java

@@ -7,6 +7,7 @@ import org.springframework.stereotype.Service;
 
 import java.sql.Timestamp;
 import java.util.List;
+import java.util.Map;
 import java.util.Random;
 
 @Service
@@ -18,12 +19,14 @@ public class WeatherService {
     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 < 10; i++) {
+        for (int i = 0; i < 20; i++) {
-            Weather weather = new Weather(new Timestamp(ts + (1000 * i)), 30 * random.nextFloat(), random.nextInt(100));
+            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);
@@ -52,4 +55,7 @@ public class WeatherService {
         return weatherMapper.getSubTables();
     }
 
+    public Map avg() {
+        return weatherMapper.avg();
+    }
 }

tests/examples/JDBC/springbootdemo/src/main/resources/application.properties

@@ -1,15 +1,15 @@
 # datasource config - JDBC-JNI
-#spring.datasource.driver-class-name=com.taosdata.jdbc.TSDBDriver
+spring.datasource.driver-class-name=com.taosdata.jdbc.TSDBDriver
-#spring.datasource.url=jdbc:TAOS://127.0.0.1:6030/test?timezone=UTC-8&charset=UTF-8&locale=en_US.UTF-8
+spring.datasource.url=jdbc:TAOS://127.0.0.1:6030/test?timezone=UTC-8&charset=UTF-8&locale=en_US.UTF-8
-#spring.datasource.username=root
-#spring.datasource.password=taosdata
-
-# datasource config - JDBC-RESTful
-spring.datasource.driver-class-name=com.taosdata.jdbc.rs.RestfulDriver
-spring.datasource.url=jdbc:TAOS-RS://master:6041/test?timezone=UTC-8&charset=UTF-8&locale=en_US.UTF-8
 spring.datasource.username=root
 spring.datasource.password=taosdata
 
+# datasource config - JDBC-RESTful
+#spring.datasource.driver-class-name=com.taosdata.jdbc.rs.RestfulDriver
+#spring.datasource.url=jdbc:TAOS-RS://master:6041/test?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