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Servlet Cookie 处理
vletRequest;import javax.servlet.http.HttpServletResponse;/** * Servlet implementation class DeleteCookies */@WebServlet("/DeleteCookies")public class DeleteCookies extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet
#HttpServlet() */ public DeleteCookies() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet
#doGet(HttpServletRequest request, HttpServletResponse response) */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Cookie cookie = null; Cookie[] cookies = null; // 获取与该域相关的 Cookie 的数组 cookies = request.getCookies(); // 设置响应内容类型 response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String title = "删除 Cookie 实例"; String docType = "<!DOCTYPE html>\n"; out.println(docType + "<html>\n" + "<head><title>" + title + "</title></head>\n" + "<body bgcolor=\"
#f0f0f0\">\n" ); if( cookies != null ){ out.println("<h2>Cookie 名称和值</h2>"); for (int i = 0; i < cookies.length; i++){ cookie = cookies[i]; if((cookie.getName( )).compareTo("url") == 0 ){ cookie.setMaxAge(0); response.addCookie(cookie); out.print("已删除的 cookie：" + cookie.getName( ) + "<br/>"); } out.print("名称：" + cookie.getName( ) + "，"); out.print("值：" + cookie.getValue( )+" <br/>"); } }else{ out.println( "<h2 class=\"tutheader\">No Cookie founds</h2>"); } out.println("</body>"); out.println("</html>"); } /** * @see HttpServlet
#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); }}编译上面的 Servlet DeleteCookies，并在 web.xml 文件中创建适当的条目。现在运行 http:
//localhost:
8080/TomcatTest/DeleteCookies，将显示如下结果：
#HttpServlet() */ public DeleteCookies() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet
#doGet(HttpServletRequest request, HttpServletResponse response) */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Cookie cookie = null; Cookie[] cookies = null; // 获取与该域相关的 Cookie 的数组 cookies = request.getCookies(); // 设置响应内容类型 response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String title = "删除 Cookie 实例"; String docType = "<!DOCTYPE html>\n"; out.println(docType + "<html>\n" + "<head><title>" + title + "</title></head>\n" + "<body bgcolor=\"
#f0f0f0\">\n" ); if( cookies != null ){ out.println("<h2>Cookie 名称和值</h2>"); for (int i = 0; i < cookies.length; i++){ cookie = cookies[i]; if((cookie.getName( )).compareTo("url") == 0 ){ cookie.setMaxAge(0); response.addCookie(cookie); out.print("已删除的 cookie：" + cookie.getName( ) + "<br/>"); } out.print("名称：" + cookie.getName( ) + "，"); out.print("值：" + cookie.getValue( )+" <br/>"); } }else{ out.println( "<h2 class=\"tutheader\">No Cookie founds</h2>"); } out.println("</body>"); out.println("</html>"); } /** * @see HttpServlet
#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); }}编译上面的 Servlet DeleteCookies，并在 web.xml 文件中创建适当的条目。现在运行 http:
//localhost:
8080/TomcatTest/DeleteCookies，将显示如下结果：
Servlet Cookie 处理
