Running Spring 3.2 on Google App Engine

We will walk through the minimum to set up Spring MVC on Google App Engine.

Below are the specs that we are using:

• Java 1.6
• Spring MVC 3.2
• Google App Engine SDK 1.7
• Spring Tool Suite 3.1

Launch Spring Tool Suite.

In the Dashboard (one of the tabs), click Extensions. Find and install Google Plugin.

Create a Google App Engine Project. Do not check GWT.

First put the following Spring dependencies to /war/WEB-INF/lib

• spring-aop-3.2.0.RELEASE.jar
• spring-beans-3.2.0.RELEASE.jar
• spring-context-3.2.0.RELEASE.jar
• spring-context-support-3.2.0.RELEASE.jar
• spring-core-3.2.0.RELEASE.jar
• spring-expression-3.2.0.RELEASE.jar
• spring-web-3.2.0.RELEASE.jar
• spring-webmvc-3.2.0.RELEASE.jar

You will also need:

• commons-logging-1.1.1-apache.jar

Right click on the root folder of the project. Click Properties. Click Java Build Path. Add all the jars above.

In /war/WEB-INF/web.xml, add the following:

Create /war/WEB-INF/spring-mvc-servlet.xml.

Replace with:

Create the folder /war/views.

Create the file /war/views/hello_world.jsp.

Create the file /src/com.yournamespace.controller.HelloWorldController.java

Put the following:

The above returns the hello_world.jsp.

Right click on the root project folder. Click Run as -> Web Application.