Spring with Desktop Application.

[DanglingChap]

Hi,

I just started learning about spring and used it's MVC ... about which i am very impressed. It really eased a lot of problems for us. However, I am a bit confuse about using it with some desktop application.

The basic confusion lies in Controllers classes. What ever spring i have used, i used action-servlet.xml to specify the web pages, to add bean injection and the FormController and SimpleController to make pages. But i am unable to get any idea how to use it with Desktop Application.

It'd be great if some of you refer to me any sample Desktop Spring based application, what was the scenario for it and how it is architeched with spring.

[karldmoore]

It depends what you mean here. Are you looking to write a standalone desktop application, or are you looking to write a client/server style application?

[DanglingChap]

It depends what you mean here. Are you looking to write a standalone desktop application, or are you looking to write a client/server style application?

for the time being i am looking for client/server desktop based application using either swing or swt.

[karldmoore]

The reference manual has a chapter on remoting, this might be useful. I used HttpInvoker on a previous Swing project that worked very nicely.
http://www.springframework.org/docs/.../remoting.html

[karldmoore]

Here's an example I posted on another thread a while back. The project in this example is called timeService.

Sooooo

tomcat
    webapps
        timeService
            applicationContext.xml
            invoker-servlet.xml
            web.xml

            classes
                com/test/TimeService.class
                com/test/TimeServiceImpl.class
            lib
                spring.jar
                commons-logging-1.0.4.jar

The client will also require commons-codec.jar and commons-httpclient.jar on the classpath as well as the server prereqs.

Client

TimeServiceClient

package com.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TimeServiceClient
{
	public static void main ( String [] args )
	{
		ApplicationContext context = new ClassPathXmlApplicationContext ( "client-applicationContext.xml" );
		TimeService timeService = ( TimeService ) context.getBean ( "timeService" );
		System.out.println ( timeService.getDate () );
		sleepPlease ();
		System.out.println ( timeService.getDate () );
	}
	
	private static void sleepPlease ()
	{
		try
		{
			Thread.sleep ( 5000 );
		}
		catch ( InterruptedException e )
		{
			// ignore
		}
	}
}

client-applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
     
    <bean id="httpInvokerRequestExecutor" class="org.springframework.remoting.httpinvoker.CommonsHttpInvokerRequestExecutor"/>

    <bean id="timeService" class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean">
		<property name="serviceUrl" value="http://localhost:8080/timeService/invoker/timeService"/>
		<property name="serviceInterface" value="com.test.TimeService"/>
        <property name="httpInvokerRequestExecutor">
            <ref bean="httpInvokerRequestExecutor"/>
        </property>
    </bean>
    
</beans>

Server

TimeService

package com.test;

import java.util.Date;

public interface TimeService
{
	Date getDate ();
}

TimeServiceImpl

package com.test;

import java.util.Date;

public class TimeServiceImpl implements TimeService
{
	public Date getDate ()
	{
		return new Date ();
	}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
       
       <bean id="timeService" class="com.test.TimeServiceImpl"/>
       
</beans>

invoker-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
       
	<bean name="/timeService" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
        <property name="service">
            <ref bean="timeService"/>
        </property>
        <property name="serviceInterface">
            <value>com.test.TimeService</value>
        </property>
    </bean>
    
</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC
	"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
	"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
	<display-name>Time Service</display-name>
	<description>Time Service</description>

	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>

	<servlet>
		<servlet-name>invoker</servlet-name>
		<servlet-class>
			org.springframework.web.servlet.DispatcherServlet
		</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>invoker</servlet-name>
		<url-pattern>/invoker/*</url-pattern>
	</servlet-mapping>

</web-app>