java中乱码的解决

1.jsp页面中：
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%request.setCharacterEncoding("UTF-8");%>
2. Servlet中：response.setContentType("text/html; charset=UTF-8");
    request.setCharacterEncoding("UTF-8");
3.连接数据库时：Connection con = DriverManager.getConnection("jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=UTF8","root","");