Merge pull request #4400 from taosdata/zyyang-taosdata-patch-4

Update readme.md

tests/examples/JDBC/JDBCDemo/readme.md

@@ -6,9 +6,23 @@ TDengine's JDBC demo project is organized in a Maven way so that users can easil
 Make sure you have already installed a tdengine client on your current develop environment.
 Download the tdengine package on our website: ``https://www.taosdata.com/cn/all-downloads/`` and install the client.
 
+## How to run jdbcChecker
+<pre>mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.JdbcChecker" -Dexec.args="-host localhost"</pre>
+
+## How to run jdbcTaosDemo
+run command:
+<pre> mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.jdbcTaosdemo.JdbcTaosdemo"</pre>
+and run with your customed args
+<pre>mvn clean compile exec:java -Dexec.mainClass="com.taosdata.example.jdbcTaosdemo.JdbcTaosdemo" -Dexec.args="-host localhost"</pre>
+
 ## Compile the Demo Code and Run It
+
 To compile the demo project, go to the source directory ``TDengine/tests/examples/JDBC/JDBCDemo`` and execute
-<pre>mvn clean package assembly:single</pre>
+
+<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 ``examples/JDBC/JDBCDemo/target`` and execute