按照REST風格訪問資源時使用行為動作區分對資源進行了何種操作

@RestController
@RequestMapping("/books")
public class BookControler {
  @GetMapping
  public String getid()
  @GetMapping("{id}")
  public String getid(@PathVariable Integer id)
  @PostMapping
  public String save(@RequestBody Book book)
  @DeleteMapping("{id}")
  public String delete(@PathVariable Integer id)
  @PutMapping
  public String update(@RequestBody Book book)
}