基本springboot2.2.3.RELEASE版本测试，2.2.5就没有这个问题

java - 如何模拟客户端中止请求？

在有问题的项目里进行测试(SpringBoot有些高版本没有这种异常，所以必须在有问题的项目里)

主要是模拟客户端主动与服务端断开链接

JS 客户端请求，在浏览器console里运行下面代码即可$.ajax({    url : 'http://localhost:8089/clientAbort?timeout=950&numObjects=100000000',    timeout : 1100,    error : function(xhr,textStatus){      console.log('error:'+textStatus);    },});
import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import java.util.ArrayList;import java.util.List;/** * @date 2020/7/5 10:09 */@Controller@RequestMapping("/")public class TestController {    @GetMapping("/clientAbort")    @ResponseBody    public List<String> download(@RequestParam int timeout, int numObjects) throws InterruptedException {        Thread.sleep(timeout);        List<String> l = new ArrayList<>();        long start = System.currentTimeMillis();        for (int i = 0; i < numObjects; i++) {            l.add("l");        }        long end = System.currentTimeMillis();        System.out.println("pack use " + (end - start));        return l;    }}

解决方案如下： 在拦截器里增加拦截

import org.apache.catalina.connector.ClientAbortException;import org.springframework.web.bind.annotation.ControllerAdvice;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@ControllerAdvice(basePackages = {"your.controllers.package.name"})@Slf4jpublic class ExceptionInterceptor extends ResponseEntityExceptionHandler {    @ExceptionHandler(ClientAbortException.class)    @ResponseBody    ResponseEntity<?> handlerClientAbortException(HttpServletRequest request, HttpServletResponse response, Throwable ex) {        //日志自己处理        log.warn("in clientAbortException");                //此处一定要返回null了，因为客户端已经断开连接，返回请求没啥用了        return null;    }}