Unable to POST to my servlet (DESPARATE!)

[Andrew Jarman <aj...@metacomcorp.com>]

Hi,

I have a servlet that needs to process XML data sent from a client
browser.  The xml is not sent as a form post, but rather as direct XML.
This requires me to get the raw text sent in, so I can't use
getParameter. 

I made a simple 'Echo' servlet that simply replies back what I've sent
in.  When I run this on JDeveloper 3.1 using their WebToGo servlet
runner, it works perfectly.  When I try it in Tomcat, I don't get
anything at all.  (input is empty).  I have tried this on Tomcat 3.1,
3.2B2 and 3.2B4 with the same results.

PLEASE PLEASE somebody give me a hand.  I have a major integration to
complete this weekend, and this is the last sticking point.

I believe the Webtogo server is implementing Servlet 2.0, and Tomcat is
implementing 2.2

Any assistance is deeply appreciated.


---------------------------------------
Servlet doPost method

	public void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = new PrintWriter
(response.getOutputStream());
		out.println("<html>");
		out.println("<head><title>Echo</title></head>");
		out.println("<body>");

		int sizeOfBuffer = 100;
		char[] cbuf = new char[sizeOfBuffer];
		int offset = 0;
		int length = sizeOfBuffer;
		int charactersRead = 0;
		StringBuffer inputBuffer = new StringBuffer();
		BufferedReader inputStreamReader = request.getReader();

		while ( (inputStreamReader.ready()) && 
			(charactersRead = inputStreamReader.read(cbuf,
offset, length)) != -1) {
			inputBuffer.append(cbuf, offset,
charactersRead);

			// display what's coming in for debugging
			out.println("Reading... " +
inputBuffer.toString());
		}

	      inputStreamReader.close();

		out.println(inputBuffer);

		out.println("</body></html>");
		out.close();
	}


---------------------------------------
Web page that generates the input

<HTML>
  <HEAD>
    <META HTTP-EQUIV="Content-Type" CONTENT="text/html;
charset=WINDOWS-1252">
    <META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
    <TITLE>XML Protocol Adapter - Test 1: Submitting SOAP or HTTP/HTML
content</TITLE>
  </HEAD>

  <BODY>
    <INPUT TYPE="text" ID="server" STYLE="width: 100%;"
VALUE="http://db2.metacomcorp.bogus:8080/servlet/adapter"/>
    <TEXTAREA ROWS="5" STYLE="width: 100%;"
ID="request">&lt;browse/&gt;</TEXTAREA>
    <BUTTON ONCLICK="var http = new ActiveXObject('Microsoft.XMLHTTP');
                     http.open('POST', document.all.server.value,
false);
                     http.send(document.all.request.value);
                     document.all.result.value = http.responseText;"
            >Send</BUTTON>
    <TEXTAREA ROWS="15" STYLE="width: 100%;" ID="result">Result goes
here.</TEXTAREA>
  </BODY>
</HTML> 

Re: Unable to POST to my servlet (DESPARATE!)

["Craig R. McClanahan" <Cr...@eng.sun.com>]

Try it without the "ready()" test, which doesn't really accomplish anything
for you.  You can also simplify a little in other ways, but this is the
most important issue.

    int sizeOfBuffer = 100;
    char[] cbuf = new char[sizeOfBuffer];
    StringBuffer inputBuffer = new StringBuffer();
    BufferedReader reader = request.getReader();
    int chars = 0;
    while ((chars = reader.read(cbuf)) >= 0) {
        inputBuffer.append(cbuf, 0, chars);
    }
    reader.close();

Craig McClanahan


Andrew Jarman wrote:

> Hi,
>
> I have a servlet that needs to process XML data sent from a client
> browser.  The xml is not sent as a form post, but rather as direct XML.
> This requires me to get the raw text sent in, so I can't use
> getParameter.
>
> I made a simple 'Echo' servlet that simply replies back what I've sent
> in.  When I run this on JDeveloper 3.1 using their WebToGo servlet
> runner, it works perfectly.  When I try it in Tomcat, I don't get
> anything at all.  (input is empty).  I have tried this on Tomcat 3.1,
> 3.2B2 and 3.2B4 with the same results.
>
> PLEASE PLEASE somebody give me a hand.  I have a major integration to
> complete this weekend, and this is the last sticking point.
>
> I believe the Webtogo server is implementing Servlet 2.0, and Tomcat is
> implementing 2.2
>
> Any assistance is deeply appreciated.
>
> ---------------------------------------
> Servlet doPost method
>
>         public void doPost(HttpServletRequest request,
> HttpServletResponse response) throws ServletException, IOException {
>                 response.setContentType("text/html");
>                 PrintWriter out = new PrintWriter
> (response.getOutputStream());
>                 out.println("<html>");
>                 out.println("<head><title>Echo</title></head>");
>                 out.println("<body>");
>
>                 int sizeOfBuffer = 100;
>                 char[] cbuf = new char[sizeOfBuffer];
>                 int offset = 0;
>                 int length = sizeOfBuffer;
>                 int charactersRead = 0;
>                 StringBuffer inputBuffer = new StringBuffer();
>                 BufferedReader inputStreamReader = request.getReader();
>
>                 while ( (inputStreamReader.ready()) &&
>                         (charactersRead = inputStreamReader.read(cbuf,
> offset, length)) != -1) {
>                         inputBuffer.append(cbuf, offset,
> charactersRead);
>
>                         // display what's coming in for debugging
>                         out.println("Reading... " +
> inputBuffer.toString());
>                 }
>
>               inputStreamReader.close();
>
>                 out.println(inputBuffer);
>
>                 out.println("</body></html>");
>                 out.close();
>         }
>
> ---------------------------------------
> Web page that generates the input
>
> <HTML>
>   <HEAD>
>     <META HTTP-EQUIV="Content-Type" CONTENT="text/html;
> charset=WINDOWS-1252">
>     <META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
>     <TITLE>XML Protocol Adapter - Test 1: Submitting SOAP or HTTP/HTML
> content</TITLE>
>   </HEAD>
>
>   <BODY>
>     <INPUT TYPE="text" ID="server" STYLE="width: 100%;"
> VALUE="http://db2.metacomcorp.bogus:8080/servlet/adapter"/>
>     <TEXTAREA ROWS="5" STYLE="width: 100%;"
> ID="request">&lt;browse/&gt;</TEXTAREA>
>     <BUTTON ONCLICK="var http = new ActiveXObject('Microsoft.XMLHTTP');
>                      http.open('POST', document.all.server.value,
> false);
>                      http.send(document.all.request.value);
>                      document.all.result.value = http.responseText;"
>             >Send</BUTTON>
>     <TEXTAREA ROWS="15" STYLE="width: 100%;" ID="result">Result goes
> here.</TEXTAREA>
>   </BODY>
> </HTML>

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