java servies response 输出乱码

response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");

在dopost（）或doget（）方法里的首行加入这两行代码，可解决服务端输出乱码的问题

html页面乱码解决：在html顶部加入<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>