1.REST简介

行为动作

通常模块名使用复数，也就是加s

2.RESTful入门

@Controller
public class UserController {@RequestMapping(value = "/users", method = RequestMethod.POST)public String save() {System.out.println("user save");return "save";}/*** @PathVariable:表示路径中对应的占位符* @param id* @return*/@RequestMapping(value = "/users/{id}", method = RequestMethod.DELETE)public String delete(@PathVariable Integer id){System.out.println("delete ..." + id);return "delete";}/*** @RequestBody:接收前端传递给后端的json字符串* @param user* @return*/@RequestMapping(value = "/users",method = RequestMethod.PUT)public String update(@RequestBody User user){System.out.println(user);return "put";}
}

1.步骤：

2.RequestMapping:映射

3.@PathVariable:路径占位符 

4.@RequesBody：接收前端传递给后端的json字符串

 5.@RequestBody,@RequestVariable,@RequestParam区别

3.REST快速开发

@RequestMapping("/books")
@RestController//RequestBody+Controller
public class BookController {@PostMapping("/save")public String save() {System.out.println("user save");return "save";}@DeleteMapping("/delete")public String delete(@PathVariable Integer id){System.out.println("delete ..." + id);return "delete";}@PutMapping("/update")public String update(@RequestBody User user){System.out.println(user);return "put";}}