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

http, java, parameters, request, spring

Solution

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;
}

Problem

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?

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