Monday, March 12, 2007

DWR-2.0.rc2 + Spring 2.0 integration

Steps to integrate DWR with Spring 2.0 using new Name Spaces that were introduced. The integration currently works with Spring 2.0 and DWR-2.0RC-2 versions only. This does not work with Spring 2.0.1 or 2.0.2 or 2.0.3 and DWR-2.0RC-2, in order to work with spring 2.0+ versions you need get the current version of DWR-2.0RC-2 from HEAD of the CVS.

Step 1: Download 2.0 version of Spring form http://www.springframework.org/
Step 2: Download DWR version 2.0-rc2 from http://getahead.org/dwr/download

Copy spring and dwr jar files to the webapplication classpath.

Step 3: Add the below lines into web.xml

<servlet>

<servlet-name>dwr-spring</servlet-name>

<servlet-class>

org.springframework.web.servlet.DispatcherServlet

</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>dwr-spring</servlet-name>

<url-pattern>*.do</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>dwr-spring</servlet-name>

<url-pattern>/dwr/*</url-pattern>

</servlet-mapping>

<welcome-file-list>

<!-- index page -->

<welcome-file>index.jsp</welcome-file>

<welcome-file>index.html</welcome-file>

</welcome-file-list>


Step 4: Create the default Spring MVC context file dwr-spring-servlet.xml under WEB-INF directory of the webapplication and configure the DWR

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

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:aop="http://www.springframework.org/schema/aop"

xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"

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

http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop-2.0.xsd

http://www.directwebremoting.org/schema/spring-dwr

http://www.directwebremoting.org/schema/spring-dwr-2.0.xsd">


<!-- DWR CONFIGURATION -->

<dwr:configuration>

<dwr:create
javascript="JDate" type="new"

class="java.util.Date" />
</dwr:configuration>




<dwr:controller id="dwrController" debug="true" />

<bean id="dwrHandlerMappings"

class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">

<property name="alwaysUseFullPath"
value="true" />

<property
name="mappings">

<props>

<prop key="/dwr/**/*">dwrController</prop>

</props>

</property>

</bean>

<!-- END OF DWR CONFIGURATION -->

</beans>

Step 5: Deploy the application in Tomcat 5.5 and point the browser to http://localhost:8080/dwr-spring/dwr/index.html

If the integartion is sucessfull it should display the page with JDate link on the page.

Blow links provides more information on how to integrate DWR and Srping

http://bram.jteam.nl/index.php/2007/01/

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