RequestContextHolder多线程获取不到request对象，调用feign接口时，在Feign中的RequestInterceptor也获取不到HttpServletRequest问题解决方案。

1.RequestContextHolder多线程获取不到request对象
异常信息，报错如下：

2024-07-09 22:06:32.320 [pool-5-thread-2] ERROR com.mergeplus.handler.ObjectHandler:227 - class: interface org.jeecg.common.system.api.client.SysFeignClient, methodName=mergeRegion, error: {} 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: In this case, use RequestContextListener or RequestContextFilter to expose the current request.  at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131)  at org.springframework.web.context.support.WebApplicationContextUtils.currentRequestAttributes(WebApplicationContextUtils.java:313)  at org.springframework.web.context.support.WebApplicationContextUtils$RequestObjectFactory.getObject(WebApplicationContextUtils.java:329)  at org.springframework.web.context.support.WebApplicationContextUtils$RequestObjectFactory.getObject(WebApplicationContextUtils.java:324)  at org.springframework.beans.factory.support.AutowireUtils$ObjectFactoryDelegatingInvocationHandler.invoke(AutowireUtils.java:283)  at jdk.proxy2/jdk.proxy2.$Proxy179.getHeaderNames(Unknown Source)  at com.mergeplus.handler.ObjectHandler.lambda$doHandler$0(ObjectHandler.java:155)  at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1768)  at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java)  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)  at java.base/java.lang.Thread.run(Thread.java:833) 

异常错误截图：

2.解决方案

        // 设置子线程共享(重点)         final RequestAttributes attributes = RequestContextHolder.getRequestAttributes();          merges.stream().map(e -> CompletableFuture.supplyAsync(() -> {             JSONObject returnMap = null;             try {                 if (e.getClientBean() != null) {                     // 设置当前线程的 RequestAttributes(重点)                     RequestContextHolder.setRequestAttributes(attributes);                      Object returnValue = e.getMethod().invoke(e.getClientBean(), jsonObject.get(e.getSourceKey()));                     if (returnValue == null) {                         return e;                     }                     returnMap = JSON.parseObject(JSON.toJSONString(returnValue));                      if (returnMap == null || returnMap.isEmpty()) {                         return e;                     }                      result.put(e.getTargetKey(), returnMap.get(jsonObject.get(e.getSourceKey())));                 } else {                     if (e.getUrl() == null || e.getUrl().trim().length() == 0) {                         return e;                     }                      //设置Http的Header                     HttpHeaders headers = new HttpHeaders();                     headers.setContentType(MediaType.APPLICATION_JSON);                      //设置访问参数                     HashMap params = new HashMap<>();                     if (e.getKey() == null || e.getKey().trim().length() == 0) {                         params.put(e.getSourceKey(), jsonObject.get(e.getSourceKey()));                     }                     //设置访问的Entity                     HttpEntity entity = new HttpEntity<>(params, headers);                      // todo                     ResponseEntity