<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
String zh_value=reqeust.getParameter("zh_value");
%>

pageEncoding="UTF-8" //聲明當前頁的字符集

request.setCharacterEncoding("UTF-8"); //聲明request的字符集

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String zh_value=new String(request.getParameter("zh_value").getBytes("ISO-8859-1"),"UTF-8")
%>

pageEncoding="UTF-8" //聲明當前頁的字符集

new String(request.getParameter("zh_value").getBytes("ISO-8859-1"),"UTF-8") //將獲取的字符串先根據ISO-8859-1解碼成byte數組再根據UTF-8將byte數組生成字符串