Hi，
When arguments contain special characters, the original "DividePlugin"
implementation uses "getQuery" which decode the arguments("decodeQuery" in
picture), to escape those special characters.
eg: GET http://localhost:9195/http/test/divide/raw?name=divide&address=%23
see "getquery.png"
The result: see "getquery-ret.png"
But the "getRawQuery" will use the origin arguments("query" in picture).
the result: see "getrawquery-ret.png"
So if the arguments contain special characters, "getRawQuery" is better choice.
The other way, user can encode arguments by self.
https://github.com/apache/incubator-shenyu/pull/2203
