jetty9.x启动出现警告，而8.x就没有

程序可以正常跑，但是日志里一直在不断的刷出这个警告

qtp1915503092-14 00:29:15,196  WARN HttpParser:1802 - Illegal character 0x0 in state=METHOD for buffer HeapByteBuffer@3ca6d901[p=2,l=38,c=8192,r=36]={dx00<<<x00x00x0bQx00x00x1ax00x00x00ex00x10x00x00x002...D0C7E260DEQx00x00x00x00>>>x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00...x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00} qtp1915503092-14 00:29:15,198  WARN HttpParser:1418 - bad HTTP parsed: 400 Illegal character 0x0 for HttpChannelOverHttp@1c0b74cf{r=0,c=false,a=IDLE,uri=null}