SpringBoot 基础常用注解

怼烎@ 2022-03-21 07:49 98阅读 0赞

1、@SpringBootApplication = @SpringBootConfiguration + @EnableAutoConfiguration + @ComponentScan

@RestController = @Controller+@ResponseBody

打开源码可以看见：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70][]

2、@RequestMapping(path = "/\{id\}", method = RequestMethod.GET)

可以在参数中使用(@PathVariable String id )代替

3、@GetMapping = @RequestMapping(method = RequestMethod.GET)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 1][]  
      @PostMapping = @RequestMapping(method = RequestMethod.POST)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 2][]  
      @PutMapping = @RequestMapping(method = RequestMethod.PUT)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 3][]  
      @DeleteMapping = @RequestMapping(method = RequestMethod.DELETE)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 4][]

4、@RequestParam(value = "name", required = true)  
                    可以设置默认值，比如分页

5、@RequestBody 请求体映射实体类  
                    需要指定http头为 content-type为application/json charset=utf-8

6、@RequestHeader 请求头，比如鉴权  
                    @RequestHeader("access\_token") String accessToken

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70]: /images/20220321/1a516ae27c3544b38615cedfd5d62a41.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 1]: /images/20220321/56394a0c655f4a4b8e0599fe7b4e5101.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 2]: /images/20220321/0043a55198334fdc8da7ea5f1845ce75.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 3]: /images/20220321/2edf46608df845fd8dc7e8041166c309.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEwNjA5MDY_size_16_color_FFFFFF_t_70 4]: /images/20220321/21d7d4b17c0846b0952ed737b222093d.png