Whats the use of doget and dopost

Question

hi
whats the use of doget and dopoast when same work can be done by sevice alone?
Message was edited by:
pooja_k_online

Answer 1

Try looking at the Tomcat implementation of HttpServlet.service() method. I have pasted it below, if you look at the service() method all it does is to check for the method and call the appropriate method. It is not recommended to override the service method. It is a good practice to only override the getXXX() methods.
protected void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
String method = req.getMethod();
if(method.equals("GET"))
long lastModified = getLastModified(req);
if(lastModified == -1L)
doGet(req, resp);
} else
long ifModifiedSince = req.getDateHeader("If-Modified-Since");
if(ifModifiedSince < (lastModified / 1000L) * 1000L)
maybeSetLastModified(resp, lastModified);
doGet(req, resp);
} else
resp.setStatus(304);
} else
if(method.equals("HEAD"))
long lastModified = getLastModified(req);
maybeSetLastModified(resp, lastModified);
doHead(req, resp);
} else
if(method.equals("POST"))
doPost(req, resp);
else
if(method.equals("PUT"))
doPut(req, resp);
else
if(method.equals("DELETE"))
doDelete(req, resp);
else
if(method.equals("OPTIONS"))
doOptions(req, resp);
else
if(method.equals("TRACE"))
doTrace(req, resp);
} else
String errMsg = lStrings.getString("http.method_not_implemented");
Object errArgs[] = new Object[1];
errArgs[0] = method;
errMsg = MessageFormat.format(errMsg, errArgs);
resp.sendError(501, errMsg);
}