java.lang.IllegalStateException : No thread-bound request found, 方面的异常

Question

以下是我的方面:

    @Configurable
    @Aspect
    public class TimingAspect {

        @Autowired
        private HttpServletRequest httpServletRequest;

        // Generic performance logger for any mothod
        private Object logPerfomanceInfo(ProceedingJoinPoint joinPoint, String remoteAddress) {
            StringBuilder tag = new StringBuilder();
            if (joinPoint.getTarget() != null) {
                tag.append(joinPoint.getTarget().getClass().getName());
                tag.append(".");
            }
            tag.append(joinPoint.getSignature().getName());
            StopWatch stopWatch = new StopWatch(tag.toString());
            Object result = joinPoint.proceed(); // continue on the intercepted method
            stopWatch.stop();

            PerformanceUtils.logInPerf4jFormat(stopWatch.getStartTime(), stopWatch.getElapsedTime(), stopWatch.getTag(), stopWatch.getMessage(), remoteAddress);
            return result;
        }

        @Around("execution(* $$$.$$$.$$$.api.controller.*.*(..))")
        public Object logAroundApis(ProceedingJoinPoint joinPoint) throws Throwable {
            String remoteAddress = null;
            if (httpServletRequest != null) {
               remoteAddress = httpServletRequest.getRemoteAddr();
            }
            return logPerfomanceInfo(joinPoint, remoteAddress);
        }

        @Around("execution(* $$$.$$$.$$$.$$$.$$$.$$$.*(..))")
        public Object logAroundService(ProceedingJoinPoint joinPoint) throws Throwable {
            String remoteAddress = null;
            if (httpServletRequest != null) {
                remoteAddress = httpServletRequest.getRemoteAddr();
            }
            return logPerfomanceInfo(joinPoint, remoteAddress);
        }

我没有收到任何编译时错误，但是当我启动我的 jetty 服务器时出现以下异常:

nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

这里需要注意的一点是，如果我删除“logAroundService”方法，我不会得到任何异常。

Answer 1

您不应该在您的切面中 Autowiring HttpServletRequest，因为这会将您的切面绑定(bind)为只能对从正在执行的 HttpServletRequest 中调用的类运行。

当您需要时，请改为使用 RequestContextHolder 来获取请求。

private String getRemoteAddress() {
    RequestAttributes attribs = RequestContextHolder.getRequestAttributes();
    if (attribs instanceof NativeWebRequest) {
        HttpServletRequest request = (HttpServletRequest) ((NativeWebRequest) attribs).getNativeRequest();
        return request.getRemoteAddr();
    }
    return null;
}