Request header is too large

当request url过长的时候，经常tomcat后台就会包 “Request header is too large”错误。

解决方法：修改server.xml文件，linux下找到webapps文件夹，find .  -name "server.xml",利用vi修改
add/update at the tomcat server xml

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" maxHttpHeaderSize="65536" maxPostSize="4194304"  
               URIEncoding="UTF-8"/>