Using Jardiff

Question

Hi,
I want to use jardiff. I have downloaded JnlpDownloadServlet and trying to implement it.
I read complete documentation, but sill I',m not clear about the 2 approaches.
Plz correct me If I'm wrong.
1) I have to change .jar file name, considering BNF notation.
else
2) I can have version.xml file located in each directory, so i need not to change .jar file name.
Is my understanding correct?
I choose second approach and I have included version.xml file in directory
<jnlp-versions>
     <resource>
          <pattern>
               <name>com.mastek.elixir.backoffice.client.jar</name>
               <version-id>1.1</version-id>
          </pattern>
          <file>com.mastek.elixir.backoffice.client.jar</file>
     </resource>
     <resource>
          <pattern>
               <name>com.mastek.elixir.backoffice.common.jar</name>
               <version-id>1.1</version-id>
          </pattern>
          <file>com.mastek.elixir.backoffice.common.jar</file>
     </resource>
<jnlp-versions>Following is jnlp file
<jar href="lib/com.mastek.elixir.backoffice.client.jar" version="1.1"/>
  <jar href="lib/com.mastek.elixir.backoffice.common.jar" version="1.1"/>I',m getting following error...
Missing version field in response from server when accessing resource: (http://localhost:8888/elixir/lib/com.mastek.elixir.backoffice.client.jar, 1.1)Stacktrace
JNLPException[category: Download Error : Exception: null : LaunchDesc: null ]
     at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.getDownloadSize(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadJarFiles(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
     at com.sun.javaws.Launcher.downloadResources(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)Can you tell me what is the problem? Am i missing something?

Answer 1

Hi everyone,
After a long fight................................I could use jardiff.
I'm using 2nd approach i.e version.xml file
What is given in JNLPServeletDownloads developers guide to add
<web-app>
     <servlet>
        <servlet-name>JnlpDownloadServlet</servlet-name>
        <servlet-class>com.sun.javaws.servlet.JnlpDownloadServlet</servlet-class>
     </servlet>
     <servlet-mapping>
        <servlet-name>JnlpDownloadServlet</servlet-name>
        <url-pattern>/app/*</url-pattern>
     </servlet-mapping>
  </web-app>It was not working, with above configuration,
I made changes as this n its working now.
<servlet-mapping>
        <servlet-name>JnlpDownloadServlet</servlet-name>
        <url-pattern>*.jnlp</url-pattern>
    </servlet-mapping>
     <servlet-mapping>
        <servlet-name>JnlpDownloadServlet</servlet-name>
        <url-pattern>*.jar</url-pattern>
    </servlet-mapping>Regards,
Shishirk