我在youtube上關注了一個關於創建cookie的教程。我輸入了正確的代碼,但我得到一個錯誤在符合:Cookie在日期中給出錯誤
cookie = new Cookie("test_cookie", Long.toString(new Date().getTime()));
錯誤說:The constructor Date() is undefined.
有誰知道我是如何得到這個錯誤,當他可以在視頻中運行它: https://www.youtube.com/watch?v=hOColvr3pl0
我想應該有一個參數,或? 問候的Mads
package ExamplePackage;
import java.io.IOException;
import java.util.Date;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/CookieUsageServlet")
public class CookieUsageServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Cookie cookie = getCookie(request, response);
printResponse(response, cookie);
}
private Cookie getCookie(HttpServletRequest request, HttpServletResponse response) {
Cookie cookie = null;
Cookie[] cookiesArray = request.getCookies();
if(cookiesArray != null) {
for(int x = 0; x < cookiesArray.length; x++) {
if(cookiesArray[x].getName().equals("test_cookie")) cookie = cookiesArray[x];
}
}
if(cookie != null) {
System.out.println("cookie retrieved");
} else {
int timeToExpireCookie = new Integer(getServletContext().getInitParameter("time-to-expire-cookie")).intValue();
cookie = new Cookie("test_cookie", Long.toString(new Date().getTime()));
cookie.setMaxAge(timeToExpireCookie);
cookie.setPath(request.getContextPath()); // Sti til login
System.out.println("Cookie created...");
response.addCookie(cookie);
}
return cookie;
}
private void printResponse(HttpServletResponse response, Cookie cookie) throws IOException {
PrintWriter printWriter = response.getWriter();
response.setContentType("text/html");
printWriter.println("<html>");
printWriter.println("<head><title>Cookie In JAVA servlet</title></head>");
printWriter.println("<body>");
printWriter.println("<cookie name: " + cookie.getName() + "<br>");
printWriter.println("<cookie value: " + cookie.getValue() + "<br>");
printWriter.println("<time to expire cookie in seconds: " + cookie.getMaxAge() + "<br>");
printWriter.println("</body>");
printWriter.println("</html>");
}
}
當然好點啊。非常感謝:-)當我運行程序時出現錯誤: HTTP狀態405 - HTTP GET方法不受此URL支持 類型狀態報告 消息HTTP GET方法不受此URL支持 description對於請求的資源不允許指定的HTTP方法。 你知道這是怎麼回事嗎? 最好的問候 Mads – McDuck4
重寫'doGet'方法以及 –
這樣的事情是這樣?:@Override保護無效doGet(HttpServletRequest請求,HttpServletResponse響應)拋出ServletException,IOException {processRequest(request,response); } – McDuck4