spring boot 原生错误处理ErrorController

2016-11-29 11:25:22来源:CSDN作者:shenyunsese人点击

第七城市

最近开始使用springboot,发现一个奇怪的现象,一个url报错

使用浏览器地址请求返回一个html界面

Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.Tue Nov 29 10:48:26 CST 2016There was an unexpected error (type=Bad Request, status=400).Required String parameter 'fileName' is not present


使用postman请求返回一个json格式的响应

{    "timestamp": 1480388264722,    "status": 400,    "error": "Bad Request",    "exception": "org.springframework.web.bind.MissingServletRequestParameterException",    "message": "Required String parameter 'fileName' is not present",    "path": "/file/delete"}

究竟spring boot怎么来区分这种请求返回不同格式的数据的呢。经过一步步跟进。精髓在BasicErrorController这个类上

@RequestMapping(        value = {"${error.path:/error}"},        produces = {"text/html"}    )    public ModelAndView errorHtml(HttpServletRequest request) {        return new ModelAndView("error", this.getErrorAttributes(request, false));    }    @RequestMapping({"${error.path:/error}"})    @ResponseBody    public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {        Map body = this.getErrorAttributes(request, this.getTraceParameter(request));        HttpStatus status = this.getStatus(request);        return new ResponseEntity(body, status);    }


spring boot 根据Accept头的内容,输出不同格式的错误响应。比如针对浏览器的请求生成html页面,针对其它请求生成json格式的返回。字段为accept的text/html的内容来判断
第七城市

最新文章

123

最新摄影

微信扫一扫

第七城市微信公众平台