POST请求
request.setCharacterEncoding("UTF-8");
GET和POST请求
页面:UTF-8 Tomcat:iso8859-1 解决思路: 页面(utf-8编码) - Tomcat(iso8859-1解码) 先iso8859-1编码,再用utf-8解码 String str = request.getParameter(""); new String(str.getBytes("iso8859-1"),"UTF-8")
原文：https://www.cnblogs.com/archer-wen/p/11294254.html