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Message:

same

Posted by panu_phot on November 07, 2001 at 1:58 AM

> HI,

> I have no idea of solution.
> I try to make an application-servlet communication but when I
> get the inputStream with new ObjectInputStream(myServletInputStream), I have the StreamCorruptedException

> If you have a solution?

> thanks.

> > I am writing a simple java server, that listens on port 95, spawns a thread for every socket that connects, and then attempts to read a serialized object from the socket, then return it to the socket. I have written a test client program, and here is the code for both the client and the server:

> > From the client:
> > ***************************************
> > URL myConnector = new URL("http://"+address+":95");
> > URLConnection myConnection = myConnector.openConnection();
> > myConnection.setDoOutput(true);
> > myConnection.setDoInput(true);
> > System.out.println("connection open...");
> > //send an object
> > DummyObject someObject = new DummyObject(System.currentTimeMillis());
> > OutputStream os = myConnection.getOutputStream();
> > //os.setRequestProperty("Content-Type","application/octet-stream");
> > ObjectOutputStream toServer = new ObjectOutputStream(os);
> > System.out.println("Sending DummyObject: "+DummyObject.currTime());
> > toServer.writeObject(someObject);
> > toServer.flush();
> > toServer.close();
> > System.out.println("object written to the port");
> > //wait for a response
> > *******************************************

> > The server:
> > *******************************************
> > //read the object in.
> > System.out.println("creating an input stream");
> > InputStream in = mySocket.getInputStream();
> > System.out.println("creating an ObjectInputStream");
> > (dies on this line...)ObjectInputStream fromClient = new ObjectInputStream(in);
> > System.out.println("about to read the object");
> > DummyObject someObject = (DummyObject)fromClient.readObject();
> > System.out.println("Received DummyObject: "+DummyObject.currTime());
> > ***********************************************

> > And here is the stack trace....
> > ********************************************
> > java.io.StreamCorruptedException: Caught EOFException while reading the stream header
> > at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:845)
> > at java.io.ObjectInputStream.(ObjectInputStream.java:168)
> > at WorkerBee.run(SimpleServer.java:112)
> > at java.lang.Thread.run(Thread.java:496)
> > Caught EOFException while reading the stream header
> > ************************************************

> > So it is complaining that it gets an EOF exception when trying to read the header of the socket connection's InputStream... anyone have any ideas?

> > Here is the code for my DummyObject class:
> > *************************************************
> > class DummyObject implements Serializable
> > {
> > protected static long currTime;
> > public DummyObject(long newTimeLong)
> > {
> > currTime = newTimeLong;
> > }
> > //set and accessor methods
> > public static long currTime()
> > {
> > return currTime;
> > }
> > public void setCurrTime(long newTimeLong)
> > {
> > currTime = newTimeLong;
> > }
> > private void writeObject(java.io.ObjectOutputStream out) throws IOException
> > {
> > //default write thingie...
> > System.out.println("writing from the server... ");
> > out.defaultWriteObject();
> > }
> > private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException
> > {
> > //default read thingie...
> > System.out.println("reading to the server... ");
> > in.defaultReadObject();
> > }
> > }

> > -Kimball Larsen
> > quangdog@hotmail.com