给定以下应用程序,基于Spring Initializr模板
@SpringBootApplication public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } public static class Payload { public String field1; public String field2; } @RestController public static class MyController { @RequestMapping("/echo") public ResponseEntity<Payload> echo(@RequestBody Payload payload) { return new ResponseEntity<>(payload, HttpStatus.OK); } } }
如果在发送标头后中止连接
$ nc 192.168.56.1 8080 POST /echo HTTP/1.1 Host: 192.168.56.1:8080 Content-Type: application/json Content-Length: 42 ^C
然后服务器尝试用400响应,并记录以下内容
2016-05-03 16:56:28.916 WARN 5776 --- [nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Unexpected EOF read on the socket; nested exception is java.io.EOFException: Unexpected EOF read on the socket 2016-05-03 16:56:28.997 ERROR 5776 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost] : Exception Processing ErrorPage[errorCode=0, location=/error] org.apache.catalina.connector.ClientAbortException: java.io.IOException: An established connection was aborted by the software in your host machine
相反,如果客户端在请求发送后中止,则默认情况下不记录任何内容,结果ClientAbortException可通过过滤器使用ErrorAttributes#getError。
ClientAbortException
ErrorAttributes#getError
如何以相同方式处理请求期间中止?也就是说,默认情况下不会记录任何警告/错误,并启用自定义过滤器来告知客户端已中止。
我已经找到了解决方案,但还没有找到解决问题的案例。
@Autowired private DefaultErrorAttributes defaultExceptionResolver; @ExceptionHandler(HttpMessageNotReadableException.class) public void checkForAbort(HttpServletRequest request, HttpServletResponse response, RuntimeException exception) { if (exception.getCause() instanceof EOFException) { ClientAbortException abortException = new ClientAbortException(exception.getCause()); abortException.addSuppressed(exception); try { response.getOutputStream().close(); } catch (IOException ex) { abortException.addSuppressed(ex); } defaultExceptionResolver.resolveException(request, response, null, abortException); } else { throw exception; } }
例如,这可能会进入@ControllerAdvice。
@ControllerAdvice