Spring MVC URL Submission parameters and get parameters

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:

?

1234567891011

/**     * Spring MVC URL提交参数     * @param name     * @return     */    @RequestMapping(/param)    public ModelAndView getInfo(@RequestParam(name) String name){                String str = name +  Spring MVC示例;        return new ModelAndView(message, str, str);    }

The URL format for accessing the method is: param?name=hoking (get mode). This is a very common way to submit. Bind request parameter A to variable a when the request parameter A does not exist, an exception occurs with the annotation @requestparam, and can be resolved by setting the property 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 the URI of a set of resources, such as http://example.com/resources/a URI for a single resource, such as www.2cto.com. For more information, please read the following article.

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

?

12345678910

/**     * Spring MVC 支持RESTful风格的URL参数     *      * @return     */    @RequestMapping(/index/{username})    public String getMessage(@PathVariable(username) String username){        System.out.println(username);        return message;    }

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