import javax.servlet.http.Cookie;

//--------省略若干代码-----------

protected void doGet(HttpServletRequest request, HttpServletResponse response)

		throws ServletException, IOException {

	//1.创建Cookie对象，绑定数据【name是"msg"，value是"hello"】

	Cookie c = new Cookie("msg", "hello");

	//2.发送Cookie对象【只有发送Cookie的浏览器可以获取Cookie】

	response.addCookie(c);

}

//--------省略若干代码-----------

import javax.servlet.http.Cookie;

//--------省略若干代码-----------

protected void doGet(HttpServletRequest request, HttpServletResponse response)

		throws ServletException, IOException {

	//3.获取Cookie

	Cookie[] cs = request.getCookies();

	//4.遍历Cookies

	if(cs!=null){

		for(Cookie c:cs){

			String name = c.getName();

			String value = c.getValue();

			System.out.println(name+":"+value);

		}

	}

}

//--------省略若干代码-----------