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Servlet that returns an HTTP error code as page response |
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This J2EE tips demonstrates a java servlet that returns an HTTP error code
as page response in case an error has occured. For example, 5xx-series
messages indicate that something went wrong on the server. Usually
associated with CGI problems.
import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
public class SendError extends HttpServlet {
public void doGet(HttpServletRequest request ,
HttpServletResponse response)
throws ServletException , IOException {
response.setContentType("text/plain");
PrintWriter out = response.getWriter();
int a = request.getContentLength();
if(a==-1) {
// The Default content Length is -1
response.sendError(response.SC_LENGTH_REQUIRED,
"ContentLength Required");
// Developer can use 411 in place of SC_LENGTH_REQUIRED
}
}
public void doPost(HttpServletRequest request ,
HttpServletResponse response)
throws ServletException , IOException {
doGet(request , response);
//Calling doGet from doPost()
}
}
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