Tomcat7.0.73-The valid characters are defined in RFC 7230 and RFC 3986
Tomcat在7.0.73,8.0.39,8.5.7等版本后(详情:https://stackoverflow.com/questions/41053653/tomcat-8-is-not-able-to-handle-get-request-with-in-query-parameters/44005213#44005213),添加了对于http头的验证,就是添加了些规则去限制HTTP头的规范性