consumes="application/json"
只处理 content-type 为 application/json 的请求

produces="application/json"
只处理 Accept 为 application/json 的请求



@RequestMapping(value="/contentTypeCheck",consumes="application/json")
public String contentTypeCheck(){       
    return "only for content-type=application/json "+LocalDateTime.now();
}
    
@RequestMapping(value="/acceptCheck",produces="application/json")
public String acceptCheck(){        
    return "only for Accept=application/json "+LocalDateTime.now();
}

/contentTypeCheck
org.springframework.web.HttpMediaTypeNotSupportedException: Content type '' not supported"


curl 请求设置 head
curl -XGET -H 'Content-Type:application/json'  http://127.0.0.1:8090/contentTypeCheck
返回结果Ok
only for content-type=application/json 2021-02-03T09:08:10.567 



/acceptCheck
浏览器发送
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9

注意 */*


完整代码
https://gitee.com/dyyx/springboothello/blob/master/src/main/java/demo/controller/ConsumesAndProducesController.java



 curl实用技巧