增加删除指定key的cookie方法

zheng-common/src/main/java/com/zheng/common/util/CookieUtil.java

@@ -52,4 +52,14 @@ public class CookieUtil {
         return value;
     }
 
+    /**
+     * 删除cookie
+     * @param response
+     * @param name
+     * @return
+     */
+    public static void removeCookie(HttpServletResponse response, String name) {
+        setCookie(response, name, "", "/", 0);
+    }
+
 }