Decoding URI query string in Java

Question

I need to decode a URI that contains a query string; expected input/output behavior is something like the following:

abstract class URIParser
{       
    /*         


        

Answer 1

Use

URLDecoder.decode(proxyRequestParam.replace("+", "%2B"), "UTF-8")
          .replace("%2B", "+")

to simulate decodeURIComponent. Java's URLDecoder decodes the plus sign to a space, which is not what you want, therefore you need the replace statements.

Warning: the .replace("%2B", "+") at the end will corrupt your data if the original (pre-x-www-form-urlencoded) contained that string, as @xehpuk pointed out.