There are 2 ways to get started with DWR, the easy way is to
download the WAR file and have a look around, however this does not help you see how easily DWR integrates with your current web application, so the following 3 simple steps are recommended:
1. Install the DWR JAR file
Download the dwr.jar file. Place it in the WEB-INF/lib directory of your webapp. You'll probably have a set of jar files in there already.
2. Edit the config files
The following lines need to be added to WEB-INF/web.xml. The <servlet> section needs to go with the other <servlet> sections, and likewise with the <servlet-mapping> section.
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<display-name>DWR Servlet</display-name>
<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
