I'm trying to write an application consisting of a
client side application and a Server side Servlet.
To start out, the client is supposed to send an
integer to the Servlet, and then the
Servlet is supposed to send an Integer back.
this is the important part of the service method my Servlet is using
OutputStream out = response.getOutputStream();
InputStream in = request.getInputStream();
DataInputStream dataIn = new DataInputStream(in);
DataOutputStream dataOut = new DataOutputStream(out);
int requesttype;
requesttype = dataIn.readInt();
//write the integer received to a file
tolog("Request : " + requesttype);
dataOut.writeInt(ScrapBookProtocol.VALID);
this is the code the client is using to make the connection to the servlet.
String path ="http://www22.addr.com/~mgardne/servlets/ScrapBookServer";;
URL servletURL = new URL(path);
URLConnection connection = servletURL.openConnection();
connection.setUseCaches(false);
connection.setRequestProperty("CONTENT_TYPE","application/octet-stream");
connection.setDoInput(true);
connection.setDoOutput(true);
//make request
OutputStream out = connection.getOutputStream();
InputStream in = connection.getInputStream();
DataOutputStream dataOut = new DataOutputStream(out);
dataOut.writeInt(ScrapBookProtocol.GETSCRAPBOOK );
out.flush();
out.close();
//read response
DataInputStream dataIn = new DataInputStream(in);
int vc = dataIn.readInt(); //**exception occurs here!!
System.out.println("Validation Code Received: " + vc);
When I run the client side program I get a java.io.EOFException, at the call
to dataIn.readInt(), which seems to indicate that the server isn't sending
anything back.
Also, the call to toLog() should write the integer that the client sent to a
log file, and
nothing is getting written there. So, I'm either not making a connection at
all, or the
Servlet is not sending anything back. Am I missing anything here? What is
the correct way
of sending integers back and forth between a program and a servlet??
--Monte Glenn Gardner
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