CODEWITHSUNDEEP
javajsp
Prabhath kesav
Prabhath kesav

Reputation: 428

Getting Exception-java.lang.IllegalStateException: getOutputStream() has already been called for this response

I am new to jsp,when I try to invoke a jsp page by some parameters named cId and passWord,I getting this error,The code I have been trying is given below,I have already gone through the same error which have been seen by googling,but still I am getting the same issue. The code is:

<body>
        <%

        String cidMessage = "cID";
        String passEncrypted = "passWord";
        System.out.println("CID ISSSSSSSSSSSS"+cId);
        if ((cId.equals(cidMessage)) && (passWord.equals(passEncrypted))) {
                        System.out.println("Validation Correct"+cId);
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date date = new Date();
            String time = sdf.format(date.getTime());
            String xmlOutput = "<smsreport>"
                    + "<date>" + time + "</date>"
                    + "<result>" + "SUCESS" + "</result>"
                    + "<msgid>" + currentTimeMillis() + "</msgid>"
                    + "<msgparts>" + "1" + "</msgparts>"
                    + "</smsreport>";

            try {
                byte[] contents = xmlOutput.getBytes();
                response.setContentType("text/xml");
                response.setContentLength(contents.length);
                response.getOutputStream().write(contents);
                response.getOutputStream().flush();
            } catch (Exception e) {
                throw new ServletException(e);
            }
        } else {
                           System.out.println("Validation Wrong"+cId);
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date date = new Date();
            String time = sdf.format(date.getTime());
            String xmlOutput = "<smsreport>"
                    + "<date>" + time + "</date>"
                    + "<result>ERROR</result>"
                    + "<msgid>" + "ErrorCode" + "</msgid>"
                    + "<msgparts>" + "ErrorMessage" + "</msgparts>"
                    + "</smsreport>";

            try {
                byte[] contents = xmlOutput.getBytes();
                response.setContentType("text/xml");
                response.setContentLength(contents.length);
                response.getOutputStream().write(contents);
                response.getOutputStream().flush();
            } catch (Exception e) {
                throw new ServletException(e);
            }

        }
    %>
</body>

Upvotes: 0

Views: 17180

Answers (3)

Santosh
Santosh

Reputation: 17923

Throws:IllegalStateException - if the getWriter method has been called on this response .

  • This means that you can call either getWriter() or getOutputStream() methods.

  • Now in JSP (and eventually in compiled servlet), there is an implicit variable defined called out . This is nothing but an instance of PrintWriter class. This means that on the response object, getWriter() is already called and hence on calling getOutputStream() you get IllegalStateException

  • Now as solution for this problem, as some people have pointed out, move this code into a servlet where you have full control and use the outputstream the way you want.

Upvotes: 2

user1428716
user1428716

Reputation: 2136

This is a JSP with scriplet which is converted into a Servlet file. You dont need to call explicitly the response object. If you need to see how a compiled JSP looks like when its deployed , search (Google) how to look for the compiled class(Servlet generated out of JSP) on the server. Since you have already called the method on the response a second invocation is Illegal on the response object

Upvotes: 1

Mr Moose
Mr Moose

Reputation: 6354

You shouldn't try and do this inside a JSP. The JSP will already have obtained an output stream to write it's output. You need to use a servlet to return your XML.

When you call response.getOutputStream, it is conflicting with the fact that the JSP (which will be compiled into a servlet) already obtained an output stream. This is why it is resulting in the IllegalStateException.

Upvotes: 0

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