@RequestParam annotation usage for a get request

[Deepaks Deshpande]

Dear all,

I am trying to append the username as a query string onto my URL. I am using the following code

@RequestMapping(value="/examlogin.htm?user=", method=RequestMethod.GET, params={"user"})
	public String displayExamLogin(HttpServletRequest request, Model model, @RequestParam(value = "user", required = true) String user) throws Exception {
		// TODO Auto-generated method stub
		String today = new Date().toString();
		String username = request.getAttribute("user").toString();
		user = request.getParameter(username);
		model.addAttribute("user", user);
		logger.info("Loading the login page... "+today+" POST method");
		return "/examlogin.htm?user=";
	}

and i am calling the link in my menu page as follows:
<a href="examlogin.htm?user=">Login to take the exam</a>

Now, whenever i click the link, i get a 404 error and my logger shows the following on the console:

18:06:08,265  INFO RequestMappingHandlerMapping:179 - Mapped "{[/examlogin.htm?user=],methods=[GET],params=[user],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String org.iitb.exam.main.controllers.ExamLoginController.displayExamLogin(javax.servlet.http.HttpServletRequest,org.springframework.ui.Model,java.lang.String) throws java.lang.Exception
18:06:25,382  WARN PageNotFound:1108 - No mapping found for HTTP request with URI [/OnlineExam/examlogin.htm] in DispatcherServlet with name 'SpringDispatcher'

Please let me know what i am missing.
Thank you.

[sutha kavi]

Hi,

The following code is enough while using @RequestParam,

@RequestMapping(value="/examlogin.htm", method=RequestMethod.GET)
public String displayExamLogin(HttpServletRequest request, Model model, @RequestParam(value = "user", required = true) String user) throws Exception{
String today = new Date().toString();

model.addAttribute("user", user);
logger.info("Loading the login page... "+today+" POST method");
return "/examlogin.htm?user=";
}

Thanks,
Sutha

[Deepaks Deshpande]

Dear sutha,
I tried using your code. Now the browser displays a message saying

HTTP Status 400 - Required String parameter 'user' is not present

type Status report

message Required String parameter 'user' is not present

description The request sent by the client was syntactically incorrect.

[Deepaks Deshpande]

Also when i added the attribute

params={"user"}

to the @RequestMapping annotation, my browser displays the following error message

HTTP Status 400 -

type Status report

message

description The request sent by the client was syntactically incorrect.
Apache Tomcat/7.0.40

Please help me.

[sutha kavi]

Hi,

while using the below code,

@RequestMapping(value="/examlogin.htm", method=RequestMethod.GET)
public String displayExamLogin(HttpServletRequest request, Model model, @RequestParam(value = "user", required = true) String user) throws Exception{
String today = new Date().toString();

model.addAttribute("user", user);
logger.info("Loading the login page... "+today+" POST method");
return "";
}

Can you tell the url that has been used for accessing the above?

Regards,
Sutha