gdouyang commented on issue #1031: 关于jackson自定Serializer中调用ContextUtils.getInvocationContext()返回null问题 URL: https://github.com/apache/servicecomb-java-chassis/issues/1031#issuecomment-446817056 目前我的解决办法是写了一个HttpServerFilter，修改了beforeSendResponseAsync 1. 系统内部做了校验可以排除InvocationContext没有初始化的情况； 2. 目前系统都是java的同构语言； 3. 业务都是使用rest调用； 但不确定会不会出现执行线程不同的情况，请问一个这样的写法会不会出现执行线程不同？ ``` @Override public CompletableFuture<Void> beforeSendResponseAsync(Invocation invocation, HttpServletResponseEx responseEx) { Response response = (Response) responseEx.getAttribute(RestConst.INVOCATION_HANDLER_RESPONSE); ProduceProcessor produceProcessor = (ProduceProcessor) responseEx.getAttribute(RestConst.INVOCATION_HANDLER_PROCESSOR); Object body = response.getResult(); if (response.isFailed()) { body = ((InvocationException) body).getErrorData(); } if (Part.class.isInstance(body)) { return responseEx.sendPart((Part) body); } responseEx.setContentType(produceProcessor.getName() + "; charset=utf-8"); CompletableFuture<Void> future = new CompletableFuture<>(); try (BufferOutputStream output = new BufferOutputStream(Unpooled.compositeBuffer())) { ContextUtils.setInvocationContext(invocation); // 添加上下文 produceProcessor.encodeResponse(output, body); ContextUtils.removeInvocationContext(); // 删除上下文 responseEx.setBodyBuffer(output.getBuffer()); future.complete(null); } catch (Throwable e) { future.completeExceptionally(ExceptionFactory.convertProducerException(e)); } return future; } ```
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