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Thread: Problem Applet Error

  1. #1
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    Default Problem Applet Error

    I have the following error:

    Microsoft JScript runtime error: Object doesn't support property or method 'evalID'

    on the following line:

    var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );

    LMSTestSCODriver is a Java Applet:

    <object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
    width = "1"
    height = "1"
    name = "LMSTestSCODriver"
    codebase="http://java.sun.com/products/plugin/1.4/jinstall-14-win32.cab#Version=1,4,0,0"
    alt = "This object contains the LMSTestSCOApplet">
    <param name = CODE value = "org.adl.testsuite.rte.lms.comm.LMSTestSCOApplet.c lass" />
    <param name = CODEBASE value = "../common" />
    <param name = ARCHIVE value = "LMSTest.jar" />
    <param name = NAME value = "LMSTestSCODriver" />
    <param name = "type" value = "application/x-java-applet;version=1.4" />
    <comment>
    <applet code = "org.adl.testsuite.rte.lms.comm.LMSTestSCOApplet.c lass"
    archive = "LMSTest.jar"
    name = "LMSTestSCODriver"
    id = "NNLMSTestSCODriver"
    width = "1"
    height = "1"
    mayscript = "true">
    <param name = "codebase" value = "../common" />
    </applet>
    </comment>
    </object>


    Please help me.
    Last edited by mohsendeveloper; December 15th, 2011 at 11:48 AM. Reason: typography


  2. #2
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    Default Re: Problem Applet Error

    evalID
    Is that method defined in the LMSTestSCODriver class?

    How did you compile the code without having a definition for that class? Did you use a jar file that is not available to the java command when you execute the program?


    Is this a javascript problem?
    Wrong forum for javascript!!!

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    mohsendeveloper (December 15th, 2011)

  4. #3
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    Default Re: Problem Applet Error

    Yes. evalID is defined in the LMSTestSCODriver and I'm using jar file.

    package org.adl.testsuite.rte.lms.comm;

    import java.applet.Applet;
    import java.util.Date;
    import netscape.javascript.JSObject;
    import org.adl.testsuite.rte.lms.interfaces.MessageManage r;
    import org.adl.testsuite.rte.lms.util.*;

    public class LMSTestSCOApplet extends Applet
    {

    public LMSTestSCOApplet()
    {
    mScoStatus = true;
    }

    public void destroy()
    {
    mConnection.sendObject(null);
    mConnection.close();
    }

    public void init()
    {
    mConnection = new LMSSocketImpl(new MessageManager() {

    public void registerSocketThread(Thread thread)
    {
    mSocket = (LMSSocketThread)thread;
    }

    public void sendMessage(LMSMessageObject lmsmessageobject)
    {
    mSocket.write(lmsmessageobject);
    }

    public void receiveMessage(LMSMessageObject lmsmessageobject)
    {
    LMSTestMessageManager.printDiagnostics(lmsmessageo bject, (new Date()).getTime());
    mCurrentResponse = lmsmessageobject.getValue();
    }

    private LMSSocketThread mSocket;

    }
    );
    mConnection.start();
    }

    public void start()
    {
    mJSO = JSObject.getWindow(this);
    }

    public void stop()
    {
    destroy();
    }

    private Object getResponse()
    {
    while(mCurrentResponse == null)
    try
    {
    Thread.sleep(1L);
    }
    catch(InterruptedException interruptedexception) { }
    Object obj = mCurrentResponse;
    mCurrentResponse = null;
    return obj;
    }

    public boolean evalID(String s)
    {
    if(mJSO == null)
    mJSO = JSObject.getWindow(this);
    mConnection.sendObject(new LMSMessageObject("evalID", s));
    String s1 = (String)getResponse();
    if(s1.equals(""))
    {
    String as[] = {
    "You have launched the wrong LMS Test Content Package.\nPlease exit this package and refer to the instruction\npage for the correct LMS Test Content Package to launch."
    };
    mJSO.call("alert", as);
    return false;
    } else
    {
    return Boolean.valueOf(s1).booleanValue();
    }
    }


    public String curUserInstructions()
    {
    mConnection.sendObject(new LMSMessageObject("userInstr"));
    return (String)getResponse();
    }

    public String getUITestQuestions()
    {
    mConnection.sendObject(new LMSMessageObject("uiQ"));
    return (String)getResponse();
    }

    public boolean evaluateUIResults(String s)
    {
    mConnection.sendObject(new LMSMessageObject("evalUIQ", s));
    return Boolean.valueOf((String)getResponse()).booleanValu e();
    }

    public void writeToLog(String s, String s1, String s2)
    {
    String s3 = s + "~" + s1 + "~" + s2;
    mConnection.sendObject(new LMSMessageObject("writeToLog", s3));
    }

    public void terminateTest()
    {
    mConnection.sendObject(new LMSMessageObject("terminateTest"));
    }

    public boolean runCommands()
    {
    Results results = getCommands().evaluate(JSObject.getWindow(this));
    return evaluateResults(results);
    }

    public void setScoStatus(boolean flag)
    {
    mScoStatus = flag;
    }

    public boolean getScoStatus()
    {
    return mScoStatus;
    }

    public void completed()
    {
    mConnection.sendObject(new LMSMessageObject("completed"));
    }

    private Command getCommands()
    {
    mConnection.sendObject(new LMSMessageObject("command"));
    return (Command)getResponse();
    }

    private boolean evaluateResults(Results results)
    {
    mConnection.sendObject(new LMSMessageObject(results));
    return Boolean.valueOf((String)getResponse()).booleanValu e();
    }

    private static final long serialVersionUID = 2L;
    private LMSSocketImpl mConnection;
    protected Object mCurrentResponse;
    private JSObject mJSO;
    private boolean mScoStatus;
    }
    Last edited by mohsendeveloper; December 15th, 2011 at 11:57 AM.

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    Default Re: Problem Applet Error

    The code you posted looks like javascript.
    var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );
    Where is this line in the java code?

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    mohsendeveloper (December 15th, 2011)

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    Default Re: Problem Applet Error

    No No. The following line is a JavaScript code that is going to call the evalID which is a Java code in the Applet.

    var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );

  8. #6
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    Default Re: Problem Applet Error

    Can you make a SSCCE to demonstrate the problem. Something what we can copy, compile and test on our PCs.

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    mohsendeveloper (December 15th, 2011)

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    Default Re: Problem Applet Error

    I attached a file containing the mentioned Applet to this post. The attached file is a .zip file. You should unzip it first. There is a folder named 'resources' in the unzipped folder. And there is also a file named 'AssetLaunchTest.htm' in the 'resources' folder that contains the mentioned Applet. Obviously, if you launch the 'AssetLaunchTest.htm' file on browser then the Applet will be called by JavaScript code as I said before and then you will see the error. If you have any more questions please let me know.

    Thank you very much for your help.
    Attached Files Attached Files
    Last edited by mohsendeveloper; December 15th, 2011 at 12:39 PM. Reason: typography

  11. #8
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    Default Re: Problem Applet Error

    Not the whole project.
    I would like a small simple applet and with html to load it and some javascript that tries to connect to the applet. Very simple applet could use println to show that the connection was made and alert to show what was returned.

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    mohsendeveloper (January 19th, 2012)

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    Default Re: Problem Applet Error

    In fact, I'm a .Net developer and don't have enough information about Java Applet. I have to use this .zip file on my .Net web application. I don't have enough information to remove some parts of this Applet and make it simpler. I don't know what I should do Norm. If it's possible, please launch the mentioned .htm file on browser and let me know about the result.

  14. #10
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    Default Re: Problem Applet Error

    Sorry too much code to wade through.
    Have you checked your javascript code to be sure that is coded correctly?
    Where did you get the javascript code you are using?

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    mohsendeveloper (January 19th, 2012)

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    Default Re: Problem Applet Error

    This .zip file has been developed by Advanced Distributed Learning Initiative. I think it would be correct without any mistakes because I said this issue to other experts in our field and no one said about mistakes in this .zip file. For example, I asked this question at scorm - Microsoft JScript runtime error: Object doesn&#39;t support property or method &#39;evalID&#39; - Stack Overflow. Please read the post and let me know.

    Thank you again.

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    Default Re: Problem Applet Error

    Can you make a very simple program and html with javascript that shows the problem?

    Have you tried other browsers?


    The small test program will help locate your problem. If the small program works, then the problem could be in the large program.
    If the small program does not work, it is a lot easier to track down a problem with a small program.
    Last edited by Norm; December 16th, 2011 at 06:53 AM.

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    Default Re: Problem Applet Error

    Unfortunately, I don't have enough science for making a Java Applet because I'm a .Net developer. I got this Java Applet from somewhere else and didn't developed it myself.

    Yes. I launched it on other browsers but the problem is still there.

  20. #14
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    Default Re: Problem Applet Error

    Can you make a very simple program and html with javascript that shows the problem?
    The small test program will help locate your problem. If the small program works, then the problem could be in the large program.
    If the small program does not work, it is a lot easier to track down a problem with a small program.

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    mohsendeveloper (January 19th, 2012)

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    Default Re: Problem Applet Error

    Ok Norm. Thank you. I will let you know.

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    Default Re: Problem Applet Error

    Norm, the following is the output of my Java Console. Can you say that what is the problem? (thanks in advance)

    Detected from bootclasspath: C:\\PROGRA~1\\Java\\jre7\\lib\\deploy.jar
    security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.
    security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws
    security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws
    security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy
    security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy
    security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp
    security: property package.definition value null
    security: property package.definition new value com.sun.javaws
    security: property package.definition value com.sun.javaws
    security: property package.definition new value com.sun.javaws,com.sun.deploy
    security: property package.definition value com.sun.javaws,com.sun.deploy
    security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp
    security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp
    security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp,org.mozilla.jss
    security: property package.definition value com.sun.javaws,com.sun.deploy,com.sun.jnlp
    security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.moz illa.jss
    basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@1b684ca
    basic: Plugin2ClassLoader.addURL parent called for http://localhost:2750/Courses/Conten...on/LMSTest.jar
    Java Plug-in 10.1.0.8
    Using JRE version 1.7.0_01-b08 Java HotSpot(TM) Client VM
    User home directory = C:\Users\Mohsen
    ----------------------------------------------------
    c: clear console window
    f: finalize objects on finalization queue
    g: garbage collect
    h: display this help message
    l: dump classloader list
    m: print memory usage
    o: trigger logging
    q: hide console
    r: reload policy configuration
    s: dump system and deployment properties
    t: dump thread list
    v: dump thread stack
    x: clear classloader cache
    0-5: set trace level to <n>
    ----------------------------------------------------
    network: Connecting http://localhost:2750/Courses/Conten...on/LMSTest.jar with proxy=DIRECT
    network: Connecting http://localhost:2750/ with proxy=DIRECT
    network: Downloading resource: http://localhost:2750/Courses/Conten...on/LMSTest.jar
    Content-Length: 86,464
    Content-Encoding: null
    security: Blacklist revocation check is enabled
    security: Loading Deployment certificates from C:\Users\Mohsen\AppData\LocalLow\Sun\Java\Deployme nt\security\trusted.certs
    security: Loaded Deployment certificates from C:\Users\Mohsen\AppData\LocalLow\Sun\Java\Deployme nt\security\trusted.certs
    security: Loading certificates from Deployment session certificate store
    security: Loaded certificates from Deployment session certificate store
    security: Loading certificates from Internet Explorer TrustedPublisher certificate store
    security: Loaded certificates from Internet Explorer TrustedPublisher certificate store
    security: Validate the certificate chain using CertPath API
    security: Loading certificates from Internet Explorer ROOT certificate store
    security: Loaded certificates from Internet Explorer ROOT certificate store
    security: The certificate has been expired, need to check timestamping info
    security: No timestamping info available
    security: Found jurisdiction list file
    security: No need to checking trusted extension for this certificate
    security: The CRL support is disabled
    security: The OCSP support is disabled
    security: This OCSP End Entity validation is disabled
    security: Checking if certificate is in Deployment denied certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    security: Validate the certificate chain using CertPath API
    security: The certificate has been expired, need to check timestamping info
    security: No timestamping info available
    security: Found jurisdiction list file
    security: No need to checking trusted extension for this certificate
    security: The CRL support is disabled
    security: The OCSP support is disabled
    security: This OCSP End Entity validation is disabled
    security: Checking if certificate is in Deployment denied certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    basic: Plugin2ClassLoader.getPermissions CeilingPolicy allPerms
    security: Validate the certificate chain using CertPath API
    security: The certificate has been expired, need to check timestamping info
    security: No timestamping info available
    security: Found jurisdiction list file
    security: No need to checking trusted extension for this certificate
    security: The CRL support is disabled
    security: The OCSP support is disabled
    security: This OCSP End Entity validation is disabled
    security: Checking if certificate is in Deployment denied certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    security: Checking if certificate is in Deployment permanent certificate store
    basic: Applet loaded.
    basic: Applet resized and added to parent container
    basic: PERF: AppletExecutionRunnable - applet.init() BEGIN ; jvmLaunch dt 872136 us, pluginInit dt 11169479 us, TotalTime: 12041615 us
    basic: Applet initialized
    basic: Starting applet
    basic: completed perf rollup
    network: Connecting H-SPHERE with proxy=DIRECT
    basic: Applet made visible
    basic: Applet started
    basic: Told clients applet is started
    java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Un known Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress( Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.<init>(Unknown Source)
    at java.net.Socket.<init>(Unknown Source)
    at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)
    Exception in thread "Thread-14" java.lang.NullPointerException
    at org.adl.testsuite.rte.lms.util.LMSSocketThread.lis ten(Unknown Source)
    at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)

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    Default Re: Problem Applet Error

    Part of the problem. This error:
    java.net.ConnectException: Connection refused: connect
    Looks like it was caused by the run() method trying to create a new Socket.
    at java.net.Socket.<init>(Unknown Source)
    at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)

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    Default Re: Problem Applet Error

    Norm,

    The previous error was solved. The new Java Console error is the following:

    Exception in thread "Thread-13" java.security.AccessControlException: access denied ("java.net.SocketPermission" "192.168.1.3:3956" "accept,resolve")

  27. #19
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    Default Re: Problem Applet Error

    Applets can not connect to sockets other than from where they are loaded from without permission.

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    Default Re: Problem Applet Error

    How can I give my Applet enough permission to solve the problem?
    Last edited by mohsendeveloper; January 19th, 2012 at 02:18 PM.

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    Default Re: Problem Applet Error

    Two ways:
    Put the class files in a jar and sign the jar
    Add a Permission statement in the .java.policy file using the policytool program

    Why is the applet trying to connect to a site?

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    Default Re: Problem Applet Error

    My Applet is a Jar file. What do you mean by sign the jar, Norm?
    Could you explain more, please?

    Thank you

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    Default Re: Problem Applet Error

    See the tutorial or Google. Signing is a security thing.
    Lesson: Java Applets (The Java™ Tutorials > Deployment)

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    Default Re: Problem Applet Error

    Quote Originally Posted by Norm View Post
    Two ways:
    Add a Permission statement in the .java.policy file using the policytool program


    What code do I put in java.policy?

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    Default Re: Problem Applet Error

    The filename begins with a .
    Use the policytool program to edit the .java.policy file.
    Here is a sample from my .java.policy file:
    grant codeBase "http://127.0.0.1:8080/Testing/-" {
    permission java.util.PropertyPermission "*", "read, write";
    permission java.io.FilePermission "<<ALL FILES>>", "read";
    };
    located at:
    C:\Documents and Settings\Norm\.java.policy

    The following would open the gates for everthing:
    grant{
    permission java.security.AllPermission;
    };
    And another one used for testing:
    grant {
    permission java.net.SocketPermission "www.exdfrds.com", "connect, resolve";
    };

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