细化未登录异常类型、Cookie操作改为接口代理模式等功能点，为 v1.5.0 版本做准备

sa-token-dev/src/main/java/cn/dev33/satoken/cookie/SaCookieOper.java

@@ -0,0 +1,53 @@
+package cn.dev33.satoken.cookie;
+
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * sa-token 对cookie的相关操作 接口类 
+ * @author kong
+ *
+ */
+public interface SaCookieOper {
+
+	/**
+	 * 获取指定cookie .
+	 * 
+	 * @param request    .
+	 * @param cookieName .
+	 * @return .
+	 */
+	public Cookie getCookie(HttpServletRequest request, String cookieName);
+
+	/**
+	 * 添加cookie
+	 * 
+	 * @param response .
+	 * @param name     .
+	 * @param value    .
+	 * @param path     .
+	 * @param timeout  .
+	 */
+	public void addCookie(HttpServletResponse response, String name, String value, String path, int timeout);
+
+	/**
+	 * 删除cookie .
+	 * 
+	 * @param request  .
+	 * @param response .
+	 * @param name     .
+	 */
+	public void delCookie(HttpServletRequest request, HttpServletResponse response, String name);
+
+	/**
+	 * 修改cookie的value值
+	 * 
+	 * @param request  .
+	 * @param response .
+	 * @param name     .
+	 * @param value    .
+	 */
+	public void updateCookie(HttpServletRequest request, HttpServletResponse response, String name, String value);
+
+}