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:

	<servlet>
	<servlet-name>spring-mvc</servlet-name>
	<servlet-class>
	org.springframework.web.servlet.DispatcherServlet
	</servlet-class>
	<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
	<servlet-name>spring-mvc</servlet-name>
	<url-pattern>/</url-pattern>
	</servlet-mapping>
	<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>/WEB-INF/spring-mvc-servlet.xml</param-value>
	</context-param>
	<listener>
	<listener-class>
	org.springframework.web.context.ContextLoaderListener
	</listener-class>
	</listener>

view raw gistfile1.xml hosted with ❤ by GitHub

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

Replace with:

	<bean id="VideoController" class="com.yourcompanyname.controller.HelloController" />
	<bean id="viewResolver"
	class="org.springframework.web.servlet.view.InternalResourceViewResolver">
	<property name="prefix">
	<value>/views/</value>
	</property>
	<property name="suffix">
	<value>.jsp</value>
	</property>
	</bean>

view raw gistfile1.xml hosted with ❤ by GitHub

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:

	package com.yournamespace.controller;
	import org.springframework.stereotype.Controller;
	import org.springframework.ui.ModelMap;
	import org.springframework.web.bind.annotation.PathVariable;
	import org.springframework.web.bind.annotation.RequestMapping;
	import org.springframework.web.bind.annotation.RequestMethod;
	@RequestMapping(value="/hello")
	public class HelloContoller {
	@RequestMapping(value="", method = RequestMethod.GET)
	public String sayHello() {
	return "hello_world";
	}
	}

view raw gistfile1.java hosted with ❤ by GitHub

The above returns the hello_world.jsp.

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