• Dao層訪問數據庫時指定編碼格式
  

Connection?conn?=?DriverManager.getConnection("jdbc:mysql://localhost:3306/micro_message?characterEncoding=utf8","root","root");

• Servlet中要設置request域的編碼格式（req為?HttpServletRequest參數）

req.setCharacterEncoding("UTF-8");

• jsp中格式設置

<%@?page?language="java"?import="java.util.*"?pageEncoding="UTF-8"??contentType="text/html;?charset=utf-8"%>