Question about Chinese garbled characters in servlet of J2EE program, selection of JSP page encoding format

When encoding in JSP is GBK, the encoding conversion process is as follows: Assume: GBK code ("you")-> urlencode is changed to-> (% 3f % 2f) -> Tomcat automatically redirects you one ISO-8859-1-> get (23 43 68 23 42 68 each symbol is represented as an encoding in the ISO-8859-1) -> receive page ---> convert to byte array of ISO-8859-1 again,] ---> convert to readable text with GBK ---> (% 3f % 2f "----> to (" you "). However, when the page encoding is utf8, you do not need to transcode the page in the servlet, because the utf8 encoding will not be garbled.
Therefore, we recommend that you directly select utf8 for page encoding during development, so there is no transcoding trouble.