springboot Request header is too large 異常

Feign服務調用時，

A服務調用B服務，A服務發生如下異常：

feign.FeignException: status 400 reading CommodityService#batchInsertCommodityAttrs(String); content:

    at feign.FeignException.errorStatus(FeignException.java:60)
    at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:89)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:143)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:77)
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:102)
    at com.sun.proxy.$Proxy127.batchInsertCommodityAttrs(Unknown Source)

B服務發生如下異常：

2020-01-11 16:48:13[INFO	]org.apache.coyote.http11.Http11Processor:182-Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Request header is too large
	at org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:718)
	at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:462)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:684)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

 

解決方案：

B服務中加入如下配置：

server:
  max-http-header-size: 10000000

即設置Http報頭的最大字節大小，系統默認爲 0