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Editorial Team
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Asked: 2026-06-19T02:23:50+00:00

I am new to jsp,when I try to invoke a jsp page by some

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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>
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1 Answer

  1. Editorial Team

    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.

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