详解iOS App开发中session和coockie的用户数据存储处理

    NSHTTPCookieAcceptPolicyNever,//不接收所有Cookie信息
    NSHTTPCookieAcceptPolicyOnlyFromMainDocumentDomain//只接收主文档域的Cookie信息
};
*/
@property NSHTTPCookieAcceptPolicy cookieAcceptPolicy;
系统下面的两个通知与Cookie管理有关：

//Cookie数据的接收协议改变时发送的通知
FOUNDATION_EXPORT NSString * const NSHTTPCookieManagerAcceptPolicyChangedNotification;
//管理的Cookie数据发生变化时发送的通知
FOUNDATION_EXPORT NSString * const NSHTTPCookieManagerCookiesChangedNotification;

2.NSHTTPCookie

NSHTTPCookie是具体的HTTP请求Cookie数据对象，其中属性方法如下：

//下面两个方法用于对象的创建和初始化 都是通过字典进行键值设置
- (nullable instancetype)initWithProperties:(NSDictionary<NSString *, id> *)properties;
+ (nullable NSHTTPCookie *)cookieWithProperties:(NSDictionary<NSString *, id> *)properties;
//返回Cookie数据中可用于添加HTTP头字段的字典
+ (NSDictionary<NSString *, NSString *> *)requestHeaderFieldsWithCookies:(NSArray<NSHTTPCookie *> *)cookies;
//从指定的响应头和URL地址中解析出Cookie数据
+ (NSArray<NSHTTPCookie *> *)cookiesWithResponseHeaderFields:(NSDictionary<NSString *, NSString *> *)headerFields forURL:(NSURL *)URL;
//Cookie数据中的属性字典
@property (nullable, readonly, copy) NSDictionary<NSString *, id> *properties;
//请求响应的版本
@property (readonly) NSUInteger version;
//请求相应的名称
@property (readonly, copy) NSString *name;
//请求相应的值
@property (readonly, copy) NSString *value;
//过期时间
@property (nullable, readonly, copy) NSDate *expiresDate;
//请求的域名
@property (readonly, copy) NSString *domain;
//请求的路径
@property (readonly, copy) NSString *path;
//是否是安全传输
@property (readonly, getter=isSecure) BOOL secure;
//是否只发送HTTP的服务
@property (readonly, getter=isHTTPOnly) BOOL HTTPOnly;
//响应的文档
@property (nullable, readonly, copy) NSString *comment;
//相应的文档URL
@property (nullable, readonly, copy) NSURL *commentURL;
//服务端口列表
@property (nullable, readonly, copy) NSArray<NSNumber *> *portList;

注：相关教程知识阅读请移步到IOS开发频道。