Spring MVC How take the parameter value of a GET HTTP Request in my controller method?

Question

In this period I am studing the Spring MVC showcase example (downloadable from STS dasboard) and I have some simple question about the Request Mapping examples:

1) In my home.jsp page I have this link:

 <li> <a id="byParameter" class="textLink" href="<c:url value="/mapping/parameter?foo=bar" />">By path, method, and presence of parameter</a> </li>

As you can see by this link I am doing an HTTP GET Request having a "foo" parameter containing the value: "bar".

This HTTP Request is handled by the following method of the controller class MappingController:

@RequestMapping(value="/mapping/parameter", method=RequestMethod.GET, params="foo") public @ResponseBody String byParameter() { return "Mapped by path + method + presence of query parameter! (MappingController)"; }

This method manage HTTP Request (only GET type) that have a parameter named "foo"

How can I take the value ("bar") of this parameter and put it in a variable inside the code of my by Parameter method?

JB Nizet · Accepted Answer · 2012-11-18 17:40:54Z

184

As explained in the documentation, by using an @RequestParam annotation:

public @ResponseBody String byParameter(@RequestParam("foo") String foo) { return "Mapped by path + method + presence of query parameter! (MappingController) - foo = " + foo; }

answered Nov 18, 2012 at 17:40

JB Nizet

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2 Comments

Count Over a year ago

In case when there are 10 number of parameters, do we have to do this 10 times or there is a better way for thar scenario

JB Nizet Over a year ago

@Count: click the link I gave to the documentation, then scroll up a little until the paragraph "Supported method argument types", and read the part about "Command or form objects"

Kevin Bowersox · Accepted Answer · 2012-11-19 10:10:36Z

You could also use a URI template. If you structured your request into a restful URL Spring could parse the provided value from the url.

HTML

<li> <a id="byParameter" class="textLink" href="<c:url value="/mapping/parameter/bar />">By path, method,and presence of parameter</a> </li>

Controller

@RequestMapping(value="/mapping/parameter/{foo}", method=RequestMethod.GET) public @ResponseBody String byParameter(@PathVariable String foo) { //Perform logic with foo return "Mapped by path + method + presence of query parameter! (MappingController)"; }

Spring URI Template Documentation

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