CODEWITHSUNDEEP
gwtgwt-rpc
Jose Hdez
Jose Hdez

Reputation: 2347

com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException

I have a problem with my GWT application. I deploy on Jetty server and it runs. But when I perform a server call (class on server package of GWT), the server returns an error message. The message is:

7|0|6|http://localhost/zbapp/zb_app/|A31E1254E17F9AD731856D6BE34124A2|main.java.com.gwt.app.client.GreetingService|greetServer|java.lang.String/2004016611||1|2|3|4|2|5|5|6|6|
//EX[2,1,["com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException/3936916533","This application is out of date, please click the refresh button on your browser. ( Expecting version 5 from client, got 7. )"],0,5]

However, the server returns a 200 code that is OK.

I have updated the browser, clear up browser cache and recompiled the application, but it does not run. What is the solution for that??

Thanks in advance!

Regards!

Upvotes: 5

Views: 9029

Answers (3)

user2080225
user2080225

Reputation:

PROBLEM SOLVED (at lest my version of it)

ERROR: Exception thrown while processing this call: unknown method -> Exception: com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException message: This application is out of date, please click the refresh button on your browser. ( Expecting version 5 from client, got 7. )

SOLUTION: Look for which dependency is pulling in gwt-user module (jar), because that is the likely cause of the problem. First verify deleting the gwt-user jar from your LIB folder fixes problem, and then you can also modify your Maven to use an EXCLUDE for 'gwt-user' as follows:

<dependency>
    <groupId>com.google.gwt.google-apis</groupId>
    <artifactId>gwt-visualization</artifactId>
    <version>1.0.2</version>
    <exclusions>
        <exclusion>
          <groupId>com.google.gwt</groupId>
          <artifactId>gwt-user</artifactId>
        </exclusion>
        </exclusions>
</dependency>

Upvotes: 1

Jose Hdez
Jose Hdez

Reputation: 2347

I have changed the libraries and the error is disappeared. However, the error changes. Now my error is:

//EX[2,1,["com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException/3936916533","Could not locate requested interface 'main.java.com.gwt.app.client.GreetingService' in default classloader"],0,7]

But the interface is in classloader.

Then, it is needed to override method 'service' from HttpServlet: 

@Override 
protected void service(HttpServletRequest req, HttpServletResponse resp) 
        throws ServletException, IOException { 
    // Cache the current thread 
    Thread currentThread = Thread.currentThread(); 
    // We are going to swap the class loader 
    ClassLoader oldContextClassLoader = 
    currentThread.getContextClassLoader(); 
    currentThread.setContextClassLoader(this.getClass().getClassLoader()); 
    super.service(req, resp); 
    currentThread.setContextClassLoader(oldContextClassLoader); 
}

Thus, the application runs on Equinox!!

Upvotes: 0

Thomas Broyer
Thomas Broyer

Reputation: 64541

Your client is uptodate, as it sends a request using version 7 of the GWT-RPC protocol, but the server expects version 5. Check that you deployed the correct version of gwt-servlet.jar, and/or that you don't have an older version in your server classpath that would be used instead of the one from your webapp.

More specifically, you have a gwt-servlet.jar from GWT between 1.5 and 2.0 (version 5 of the GWT-RPC protocol) while your client code has been compiled with GWT 2.1 or newer (version 7 of the protocol).

Upvotes: 10

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