I searched the archives and have seen versions of this problem but no applicable
solution to this problem.
I'm using JDK1.3 and Tomcat server 4.0.
I have a Swing application that does a doGet on a servlet and receives serialized data
from a servlet with no problem at all. I do some updates on this data and want to send
it back to another servlet so that it can update a database. The problem seems to be
that the application doesn't open a connection with the servlet and doesn't give any
exceptions. I have even put in a false servlet name and still don't get an exception.
I've set up the servlet to just print to the console but like I said, the application
just doesn't connect with the servlet. Following is my code to output serializable
vector data to the servlet.
try {
URL outURL = new URL
"http://172.16.0.13:8080/border/servlet/RailCrossUpdate";);
URLConnection outCon = outURL.openConnection();
outCon.setUseCaches(false);
outCon.setDefaultUseCaches(false);
//outCon.setDoInput(true);
outCon.setDoOutput(true);
outCon.setRequestProperty("Content-type", "application/octet-stream");
OutputStream out = outCon.getOutputStream();
ObjectOutputStream outStream = new ObjectOutputStream(out);
outStream.writeObject(testColumnNames);
outStream.flush();
outStream.close();
System.out.println("vector size is " + outRowData.size());
}
catch (Exception eo) {
JOptionPane.showMessageDialog(null,
"Can't connect to the database. Submit again later",
"Database Connection Error",
JOptionPane.ERROR_MESSAGE);
eo.printStackTrace();
}
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