Spring MVC URL Submission parameters and get parameters

"Reprint: Http://blog.csdn.net/mahoking"

Normal URL Submission Parameters

The format URL is: url.do?param1=mahc&param2=8888.00

You need to add the following method to the Hellocontroller object above:

1 /** 2 * Spring MVC URL Submission Parameters3 * @param name4 * @return5      */  6@RequestMapping ("/param")  7      PublicModelandview GetInfo (@RequestParam ("name") (String name) {8           9String str = name +"Spring MVC Example"; Ten         return NewModelandview ("message","Str", str);  One}

The URL format for accessing the method is: param?name=hoking (get mode). This is a very common way to submit. @requestparam binding request parameter A to variable a when request parameter A does not exist an exception occurs, can be resolved by setting properties Required=false, for example: @RequestParam (value= "a", Required=false )。 As above, get the submitted parameters by name.

RESTful-style URL parameters

Next we look at the restful style. Typical application of the HTTP request method in RESTful Web services get PUT POST delete uri for a set of resources, such as http://example.com/resources/URI for a single resource, such as HTTP/ example.com/resources/142. For more information, please read the following article.

The specific implementation needs to add the following method in the Hellocontroller object above:

1 /** 2 * Spring MVC supports restful-style URL parameters3      *  4 * @return5      */  6@RequestMapping ("/index/{username}")  7      PublicString GetMessage (@PathVariable ("username") String username) {8System. out. println (username); 9         return "message"; Ten}

The @pathvariable is used above. The difference between pathvariable and Requestparam is.

When using the @requestmapping URI template-style mapping, which is someurl/{paramid}, Paramid can bind the value passed to the method's parameters by @pathvariable annotations.

The URL format for accessing the method is: index/mahoking. @PathVariable is used to obtain the dynamic parameters in the request URL, it is very convenient. Mahoking is the dynamic value of the username.

The GetMessage () method above returns a String object that represents the page's jump address and does not contain the extension (suffix name). In this case, the message.jsp page.

Spring MVC URL Submission parameters and get parameters