Improved Cookie management.

src/fr/devinsy/kiss4web/CookieHelper.java

@@ -0,0 +1,176 @@
+package fr.devinsy.kiss4web;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+
+/**
+ *
+ */
+public class CookieHelper
+{
+	static protected org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger (CookieHelper.class);
+
+	/**
+	 *
+	 */
+	static public Cookie buildCookie (String name, String value, int duration, boolean isSecure)
+	{
+		Cookie result;
+
+		result = new Cookie (name, value);
+		result.setMaxAge (duration);
+		result.setPath ("/");
+		result.setSecure (isSecure);
+
+		//
+		return (result);
+	}
+
+
+	/**
+	 *
+	 */
+	static public Cookie buildCookie (String name, String value, int duration)
+	{
+		Cookie result;
+
+		result = buildCookie(name, value, duration, false);
+
+		//
+		return (result);
+	}
+
+
+	/**
+	 *
+	 */
+	static public Cookie getCookie (Cookie[] cookies, String key)
+	{
+		Cookie result = null;
+
+		if (cookies == null)
+		{
+			result = null;
+		}
+		else
+		{
+			boolean ended = false;
+			int cookieCounter = 0;
+			while (!ended)
+			{
+				if (cookieCounter < cookies.length)
+				{
+					if (key.equals (cookies[cookieCounter].getName ()))
+					{
+						ended = true;
+						result = cookies[cookieCounter];
+					}
+					else
+					{
+						cookieCounter += 1;
+					}
+				}
+				else
+				{
+					ended = true;
+					result = null;
+				}
+			}
+		}
+
+		//
+		return (result);
+	}
+
+
+	/**
+	 *
+	 */
+	static public Cookie getCookie (HttpServletRequest request, String key)
+	{
+		Cookie result = null;
+		
+		result = getCookie(request.getCookies (), key);
+		
+		//
+		return(result);
+	}
+	
+	
+	/**
+	 *
+	 */
+	static public Object getCookieValue (Cookie[] cookies, String key)
+	{
+		Object result;
+		
+		Cookie cookie = getCookie(cookies, key);
+		
+		if (cookie == null)
+		{
+			result = null;
+		}
+		else
+		{
+			result = cookie.getValue();
+		}
+		
+		//
+		return(result);
+	}
+
+	
+	/**
+	 *
+	 */
+	static public Object getCookieValue (HttpServletRequest request, String key)
+	{
+		Object result;
+		
+		result = getCookieValue (request.getCookies (), key);
+		
+		//
+		return(result);
+	}
+	
+
+	/**
+	 *
+	 */
+	static public boolean exists(HttpServletRequest request, String key)
+	{
+		boolean result;
+		
+		if (getCookieValue(request, key) == null)
+		{
+			result = false;
+		}
+		else
+		{
+			result = true;
+		}
+		
+		//
+		return(result);
+	}
+	
+
+	/**
+	 *
+	 */
+	static public void set (HttpServletResponse response, String name, String value, int duration)
+	{
+		response.addCookie (buildCookie(name, value, duration));
+	}
+	
+	
+	/**
+	 *
+	 */
+	static public void reset (HttpServletResponse response, String key)
+	{
+		response.addCookie(buildCookie(key, "", 0));
+	}
+}