In tomcat with -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true, the FilterTools.getRelativePath does not works correctly

[miguoliang]

if a URL contains a %2F, e.g. http://localhost:8080/api/v1/permissionrole/permission/get%2Fabc, the HttpServletRequest.getRequestURI could return the raw uri correctly, but the FilterTools.getRelativePath decoded the %2F in the path. Maybe it's not right.

the correct result should be /api/v1/permissionrole/permission/get%2Fabc, but /api/v1/permissionrole/permission/get/abc returned by FilterTools.getRelativePath.

this PR works for this case, #553.

Thanks.

spark/src/main/java/spark/servlet/FilterTools.java

Line 55 in c697d98

path = URLDecoder.decode(path, "UTF-8");

[Bugjudger]

I would like to work on this issue

[Bugjudger]

I want to use UTF-8 to solve this problem. When the path in URL has %, the user can not put the URL in the address bar in the browser directly. They should encode URL in UTF-8 .
There are two ways:

1. url_encode = encodeURL(URL) (in JavaScript language). Then put url_encode into address bar,
2. open the setting: send url by UTF-8 in browser. And then change the % to %25.