解决Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 问题

From the answers here , we can know:

After Tomcat version 7.0.73, 8.0.39, 8.5.7, validation for http headers has been added.

 

Specifically, some rules are added to limit the normative nature of HTTP headers.

refer here

Specifically:

org.apache.tomcat.util.http.parser.HttpParser#IS_NOT_REQUEST_TARGET[]A bunch of not request targets are defined in

if(IS_CONTROL[i] || i > 127 || i == 32 || i == 34 || i == 35 || i == 60 || i == 62 || i == 92 || i == 94 || i == 96 || i == 123 || i == 124 || i == 125) { IS_NOT_REQUEST_TARGET[i] = true; }

Converted to the following characters (corresponding to decimal ASCII):

• Those control keys on the keyboard: ( <32或者=127)
• Non-English characters ( >127)
• 空格(32)
• 双引号(34)
• #(35)
• <(60)
• >(62)
• 反斜杠(92)
• ^(94)
• TAB上面那个键,我也不晓得嫩个读(96)
• {(123)
• }(124)
• |(125)

 

 

Solution:

or refer to here

which is:

Configure catalina.properties of tomcat

Add or modify:

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

 

Of course, there is another way, which is to encode all parameters