使用tomcat 8.5.5，相同的请求会导致RC 200或400看似随机，为什么会这样？这是两个实际的日志条目：
192.168.1.1 - - [22/Feb/2018:05:48:57 -0500] "GET /whiteplainshistory.org//local/images/icons/Heritage_Trail.jpg HTTP/1.1" 400 -
192.168.1.1 - - [22/Feb/2018:05:49:05 -0500] "GET /whiteplainshistory.org//local/images/icons/Heritage_Trail.jpg HTTP/1.1" 200 3207