tomcat：Error parsing HTTP request header

浏览器请求 tomcat 服务器地址，如果链接中带有特殊字符，比如 {}，会报错：

Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986

解决：

在 tomcat/conf/catalina.properties 文件，最后一行加上

tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}

重启 tomcat 即可