Incorrect Content-Length

Question

Dear Java Experts,
I am writing a program which communicates with a servlet. The OutputStream of the URLConnection is get and I write a String to it. However, when I use the getContentLength Method to check, the length is always 4. In turn, the server-side always gets an EOFException.
The display output of my program is:
Invoker: DATA LENGTH = 357
Invoker: CONTENT_LENGTH = 4
The code statement is:
URL servletUrl = null;
URLConnection conn = null;
ObjectInputStream ois = null;
ObjectOutputStream oos = null;
int backcmd = -1;
Object ret = null;
URL servletUrl = new URL(location);
conn = servletUrl.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "application/octet-stream");
BufferedOutputStream connos = new BufferedOutputStream(conn.getOutputStream());
System.out.println("Invoker: DATA LENGTH = "+myString.length());
connos.write(myString.getBytes());
connos.flush();
connos.close();
int length = conn.getContentLength();
System.out.println("Invoker: CONTENT_LENGTH = "+length);
Please help.
Ray

Answer 1

According to the JDK Help - URLConnection.getContentLenght() returns the length of the content-length header field
This does NOT sound like what you are trying to get
perhaps you should try something like
int length = ((String)conn.getContent()).length();