change

tests/examples/JDBC/JDBCDemo/pom.xml

@@ -10,12 +10,6 @@
     <packaging>jar</packaging>
     <build>
         <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.0.0</version>
-            </plugin>
-
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
@@ -49,14 +43,8 @@
                     <target>8</target>
                 </configuration>
             </plugin>
+
         </plugins>
     </build>
 
-    <dependencies>
-        <dependency>
-            <groupId>com.taosdata.jdbc</groupId>
-            <artifactId>taos-jdbcdriver</artifactId>
-            <version>2.0.15</version>
-        </dependency>
-    </dependencies>
 </project>

tests/examples/JDBC/JDBCDemo/readme.md

 # How to Run the JDBC Demo Code On Linux OS
 TDengine's JDBC demo project is organized in a Maven way so that users can easily compile, package and run the project. If you don't have Maven on your server, you may install it using
-<pre>sudo apt-get install maven</pre>
+```
+sudo apt-get install maven
+```
+
 
 ## Install TDengine Client
 Make sure you have already installed a tdengine client on your current develop environment.
@@ -8,19 +11,31 @@ Download the tdengine package on our website: ``https://www.taosdata.com/cn/all-
 
 ## Run jdbcDemo using mvn plugin
 run command:
-<pre> mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo"</pre>
+```
+mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo"
+```
+
 and run with your customed args
-<pre>mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo" -Dexec.args="-host [HOSTNAME]"</pre>
+```
+mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcDemo" -Dexec.args="-host [HOSTNAME]"
+```
 
 ## Compile the Demo Code and Run It
-
 To compile the demo project, go to the source directory ``TDengine/tests/examples/JDBC/JDBCDemo`` and execute
+```
+cd TDengine/src/connector/jdbc
+
+mvn clean package -Dmaven.test.skip=true
+
+cp target/taos-jdbcdriver-2.0.x-dist.jar ../../../tests/examples/JDBC/JDBCDemo/target/
+
+cd ../../../tests/examples/JDBC/JDBCDemo
 
-<pre>
 mvn clean package assembly:single
-</pre>
+```
 
-The ``pom.xml`` is configured to package all the dependencies into one executable jar file.
+To run it, go to ``TDengine/tests/examples/JDBC/JDBCDemo/target`` and execute
+```
+java -Djava.ext.dirs=.:$JAVA_HOME/jre/lib/ext -jar JDBCDemo-SNAPSHOT-jar-with-dependencies.jar -host localhost
+```
 
-To run it, go to ``examples/JDBC/JDBCDemo/target`` and execute
-<pre>java -jar JDBCDemo-SNAPSHOT-jar-with-dependencies.jar -host localhost</pre>

tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JDBCDemo.java

 package com.taosdata.example;
 
-import com.taosdata.jdbc.TSDBDriver;
-
 import java.sql.*;
 import java.util.Properties;
 
@@ -39,16 +37,16 @@ public class JDBCDemo {
         try {
             Class.forName("com.taosdata.jdbc.TSDBDriver");
             Properties properties = new Properties();
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_HOST, host);
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
+            properties.setProperty("host", host);
+            properties.setProperty("charset", "UTF-8");
+            properties.setProperty("locale", "en_US.UTF-8");
+            properties.setProperty("timezone", "UTC-8");
             System.out.println("get connection starting...");
             connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
             if (connection != null)
                 System.out.println("[ OK ] Connection established.");
         } catch (ClassNotFoundException | SQLException e) {
-            throw new RuntimeException("connection failed: " + host);
+            e.printStackTrace();
         }
     }