servlet 将输入内容通过拼接页面的方式显示出来

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- charset="utf-8" 页面编码 -->

<title>ReturnName</title>
</head>
<body>
	<form action="ReturnNameServlet" method="post">
		<input type="text" name="textname"> 
		<input type="submit" value="提交">
	</form>
</body>
</html>

returnname.html

package controller;

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

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class ReturnNameServlet
 */
@WebServlet("/ReturnNameServlet")
public class ReturnNameServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * Default constructor. 
     */
    public ReturnNameServlet() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		//设置编码字符集
		
		
		String username=request.getParameter("textname");
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.print("<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body>");
		out.print("<body>submitname is ");
		out.print(username);
		out.print("</body>");
		out.flush();
		out.close();
	}

}

ReturnNameServlet.java