Get auto-generated id in Spring JDBC using PreparedStatement

In this post I will show you how to get auto generated id of a newly inserted row in table. Spring provides an easy way to get this auto-generated key using KeyHolder which is supported Spring JDBC 3 onwards.

For this tutorial we will create a standalone maven project in Eclipse. If you already have an idea on how to create a maven project in Eclipse will be great otherwise I will tell you here how to create a maven project in Eclipse.


The following configurations are required in order to run the application

Eclipse Kepler
JDK 1.8
Have maven installed and configured
Spring and MySQL dependencies in pom.xml

Now we will see the below steps how to create a maven based spring project in Eclipse
Step 1. Create a standalone maven project in Eclipse

Go to File -> New -> Other. On popup window under Maven select Maven Project. Then click on Next. Select the workspace location – either default or browse the location. Click on Next. Now in next window select the row as highlighted from the below list of archtypes and click on Next button.


Now enter the required fields (Group Id, Artifact Id) as shown below

Group Id : com.roytuts
Artifact Id : spring-core

Step 2. Modify the pom.xml file as shown below.

Step 3. If you see JRE System Library[J2SE-1.4] then change the version by below process

Do right-click on the project and go to Build -> Configure build path, under Libraries tab click on JRE System Library[J2SE-1.4], click on Edit button and select the appropriate jdk 1.8 from the next window. Click on Finish then Ok.

Step 4. Create src/main/resources folder for putting the resource files.

Do right-click on the project and go New -> Source Folder. Give Folder name: as src/main/resources and click on Finish button.

Step 5. Create an properties file under src/main/resources.

Do right-click on src/main/resources in the project and go New -> file. Give File name: as and click on Finish button.

Step 6. Create spring-datasource.xml file under src/main/resources with the below content.

Step 7. Step 7. Create a MySQL table

Step 8. Create a POJO class for cds.

Step 9. Create a DAO

Step 10. Now create a DAO implementation class

JdbcTemplate.update needs the object of PreparedStatementCreator and KeyHolder. Here KeyHolder object has been created by GeneratedKeyHolder. And finally keyHolder.getKey() is returning the required id.

Step 11. Create JUnit test case under src/test/java folder.

Step 12. Run the above JUnit test case.

Step 13. Now Look at the database table. You will see row value is inserted. Look into the console where the generated id is displayed.

Thanks for reading.

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