Receiving data interaction rear json

Learning record, the rear end of the data received in several ways json

1. Direct receive or received by HttpServletRequest

public void test(String userid, HttpServletRequest request) {
String userName = request.getParameter("username");
System.out.println("-"+userid+"-"+username+"-");
}
2.使用@RequestParam

// Data Name same
public void Test (STR @RequestParam String) {}
// different data name
// defaultValue set default values for the default null
// parameters are required to be provided, the default is true, must pass
public void test (@ RequestParam (value = "STR", defaultValue = "defaultStr", required to false =) String Str) {}
3. use @RequestVariable

@RequestMapping(value="/user/{userid}/{username}")
public void test(@PathVariable(value="userid")int userId, @PathVariable(value="username")String userName) {}
4.使用@RequestBody

// @ RequestBody for post request, can not be used to get request
public void Test (@RequestBody the User User) {}
public void Test (@RequestBody the Map <String, Object> Map) {}
5. The use @ModelAttribute

@GetMapping combination annotation is @RequestMapping (method = RequestMethod.GET) Abbreviation
@ PostMapping, similar @ PutMapping, @ DeleteMapping, @ PatchMapping

@RestController equivalent @ ResponseBody + @ Controller used in combination
---------------------
Author: BattleCall30
Source: CSDN
Original: https: //blog.csdn.net/baidu_38622301 / article / details / 81430293
copyright: This article is a blogger original article, reproduced, please attach Bowen link!