接收方法改造

   @RequestMapping(value = "/users/{id}", method = RequestMethod.DELETE)

  @ResponseBody

  public String delete(@PathVariable Integet id)

  {

    return "";

  }

@RequestBody    用于接收json数据

@RequestParam   用于接收url地址传参或表单传参

@PathVariable    用于接收路径参数,使用{参数名称}描述路径参数

简化开发

  @RestController

  @ResquestMapping("/books")

  public class BookController

  {

    @DeleteMapping("/{id}")

    public String delete(@PathVariable Integet id)

    {

      return "";

    }

    @PostMapping

    public String save(@RequestBody Book book)

    {

      return "";

    }

  }