@requestmapping annotation function

#RequestMapping is an annotation used to handle request address mapping, which can be used on classes or methods.

is used on a class, indicating that all methods in the class that respond to requests use this address as the parent path.                                                                                                                                       (Recommended learning: java course )

The RequestMapping annotation has six attributes, which are divided into three categories for explanation below.

value, method

value: Specify the actual address of the request. The specified address can be a specific address, dynamically obtained by RestFul, or set using regular rules;

method: Specify the method type of the request, which is divided into GET, POST, PUT, DELETE, etc.;

consumes, produces

consumes: Specify the request processing method Submit content type (Content-Type), such as application/json, text/html;

produces: Specifies the content type to be returned. It will only be returned if the (Accept) type in the request header contains the specified type. ;

params, headers

params: The specified request must contain certain parameter values ​​before it can be processed by this method.

headers: The specified request must contain certain specified header values ​​in order for this method to process the request.

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