How are you reading the input stream?. If the content type is text/html then
you should read the information posted through the req object through
readLine().
Prasad Peddada wrote:
> Hi,
> I am trying to write an application program in java that makes a post
> request to a servlet. The servlet seems to service the request fine except
> it fails to read the parameter I am passing. The following is the piece of
> the application code. Could some one tell me how I should format headers to
> pass parameters to the servlet.
>
> Appreciating your help,
> Prasad
>
> String sdata = "Hello";
> //Http Header
> dataout.writeBytes("POST /servlet/myTest HTTP/1.0\r\n");
> dataout.writeBytes("Content-type: " + ctype + "\r\n");
> dataout.writeBytes("Content-length: " + (sdata.length()) + "\r\n");
> dataout.writeBytes("\r\n"); // end of header
> // POST data
> dataout.writeBytes(sdata);
>
> The output from the servlet is as follows
>
> HTTP/1.1 200 OK
> Server: JavaWebServer/1.1.3
> Content-Type: text/html
> Connection: close
> Date: Sun, 04 Apr 1999 07:21:34 GMT
>
> <HTML>
> <TITLE>Testing parameters </TITLE>
> java.lang.NullPointerException:
> at myTest.doPost(myTest.java:17)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:521)
> at javax.servlet.http.HttpServlet.service(Compiled Code)
> at com.sun.server.ServletState.callService(Compiled Code)
> at com.sun.server.ServletManager.callServletService(Compiled Code)
> at com.sun.server.http.InvokerServlet.service(InvokerServlet.java:101)
> at javax.servlet.http.HttpServlet.service(Compiled Code)
> at com.sun.server.ServletState.callService(Compiled Code)
> at com.sun.server.ServletManager.callServletService(Compiled Code)
> at com.sun.server.webserver.HttpServiceHandler.handleRequest(Compiled Code)
> at com.sun.server.webserver.HttpServiceHandler.handleRequest(Compiled Code)
> at com.sun.server.HandlerThread.run(Compiled Code)
>
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