Servlet中文亂碼問題解決方法

import java.io.*;
import java.net.URLEncoder;

import javax.servlet.*;
import javax.servlet.http.*;

public class setcookie extends HttpServlet {
	public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding
 
("utf-8");
		response.setContentType("text/html,charst=utf-8");
		response.setCharacterEncoding("utf-8");
		response.setHeader("Content-type", "text/html;charset=UTF-8");
		String userName=request.getParameter("userName");
		String userAge=request.getParameter("userAge");
		String userSex = request.getParameter
 
("userSex");
		Cookie coo = new Cookie("userName",URLEncoder.encode(userName,"UTF-8"));
		response.addCookie(coo);
			coo=new Cookie("userAge",userAge);
		response.addCookie(coo);
			coo=new Cookie("userSex",userSex);
		response.addCookie(coo);
		PrintWriter out=response.getWriter();
		out.println(
				"<h1>你的個人資訊</h1>"
 
+
				"你的姓名："+request.getParameter("userName")+"<br>"+
				"你的年齡："+request.getParameter("userAge")+"<br>"+
				"你的性別："+request.getParameter("userSex")+"<br>"
				);
	}
}

核心語句只有一條

		//request.setCharacterEncoding("utf-8");
		//response.setContentType("text/html,charst=utf-8");
		//response.setCharacterEncoding("utf-8");
		response.setHeader("Content-type", "text/html;charset=UTF-8");

以上註釋部分可以不寫

執行結果如下：

如果不在該語句，執行結果為