解决客户端向服务器写中文时乱码问题

package com.hdh.content;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TextServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //设置response的查询码表
        //response.setCharacterEncoding("Utf-8");
        //告知客户端我的编码  并使用相同的编码进行解码
        //response.setHeader("Content-Type","text/html;charset=UTF-8");

       //设置相应内容的类型为"UTF-8"
        response.setContentType("text/html;charset=UTF-8");
        
        PrintWriter writer = response.getWriter();
        writer.write("中国");
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

}

通过设置response的查询码表，并且告知客户端我的编码（utf-8）并使用相同的编码进行解码来解决向服务器写入中文时乱码现象