最近也是忙里偷闲,无意中发现了一位大牛的文章,小小的研究了一下HTTP.今天先写一点Cookie,之前有过文章都是关于Cookie的,也没有深入研究,今天也算是一起学习吧.
@interface FQWebGlobalCookies : NSObject
/*
全局单例
*/
+ (id)globalCookiesManager;
/*
对每份URL产生的Cookie 保存起来，以便管理
对响应头域中的cookie进行保存
*/
- (void)storeResponseCookies:(NSDictionary *)headerFields forURL:(NSURL *)requrl;
/*
通过requrl获取对应的cookie
返回url所有对应的cookie
*/
- (NSArray *)getCookiesByURL:(NSURL *)requrl;
/*
通过getCookiesByURL提取出的cookies 解释出可以被请求头域Cookie使用的字符值
返回一个供Cookie头域使用的值，如果提取不到返回nil
*/
- (NSString *)makeCookieValueOfHeaderByCookies:(NSArray *)cookies;
- (NSString *)makeCookieValueOfHeaderByURL:(NSURL *)requrl;
/*
通过URL清除Cookie
*/
- (void)deleteCookiesByURL:(NSURL *)requrl;
/*
所有URL
*/
- (NSArray *)allURL;
@end
@interface FQWebGlobalCookies()
{
NSMutableDictionary *cookiesDictionary;
}
@end
@implementation FQWebGlobalCookies
static FQWebGlobalCookies *globalCookiesInstance = nil;
+(id)globalCookiesManager{
if (!globalCookiesInstance) {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
globalCookiesInstance = [[FQWebGlobalCookies alloc]init];
});
}
return globalCookiesInstance;
}
- (id)init{
self = [super init];
if (self) {
cookiesDictionary = [[NSMutableDictionary alloc]init];
}
return self;
}
- (void)dealloc
{
cookiesDictionary = nil;
}
/*
对每份URL产生的Cookie 保存起来，以便管理
对响应头域中的cookie进行保存
*/
- (void)storeResponseCookies:(NSDictionary *)headerFields forURL:(NSURL *)requrl{
@synchronized(cookiesDictionary){
NSArray *newCookies = [NSHTTPCookie cookiesWithResponseHeaderFields:headerFields forURL:requrl];
if ([newCookies count] > 0) {
NSHTTPCookie *cookie;
NSMutableArray *globalCookies = [[NSMutableArray alloc]init];
for (cookie in newCookies) {
[globalCookies addObject:cookie];
}
// //如果URL相同会把旧的替换掉
if ([globalCookies count] > 0)
{
[cookiesDictionary setObject:globalCookies forKey:requrl];
}
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookies:newCookies forURL:requrl mainDocumentURL:nil];
}
}
}
/*
通过requrl获取对应的cookie
返回url所有对应的cookie
*/
- (NSArray *)getCookiesByURL:(NSURL *)requrl{
NSArray *cookies = nil;
@synchronized(self){
cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage]cookiesForURL:[requrl absoluteURL]];
}
return cookies;
}
/*
通过getCookiesByURL提取出的cookies 解释出可以被请求头域Cookie使用的字符值
返回一个供Cookie头域使用的值，如果提取不到返回nil
*/
- (NSString *)makeCookieValueOfHeaderByCookies:(NSArray *)cookies{
NSString *cookieHeader = nil;
@synchronized(self){
if ([cookies count] > 0) {
NSHTTPCookie *cookie;
for (cookies in cookies) {
if (!cookieHeader) {
cookieHeader = [NSString stringWithFormat:@"%@=%@",[cookie name],[cookie value]];
} else{
cookieHeader = [NSString stringWithFormat: @"%@; %@=%@",cookieHeader,[cookie name],[cookie value]];
}
}
}
}
return cookieHeader;
}
- (NSString *)makeCookieValueOfHeaderByURL:(NSURL *)requrl{
NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[requrl absoluteURL]];
return [self makeCookieValueOfHeaderByCookies:cookies];
}
/*
通过URL清除Cookie
*/
- (void)deleteCookiesByURL:(NSURL *)requrl{
@synchronized(self){
NSArray *cookies = [cookiesDictionary objectForKey:requrl];
for (NSHTTPCookie *cookie in cookies)
{
[[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:cookie];
}
[cookiesDictionary removeObjectForKey:requrl];
}
}
/*
所有URL
*/
- (NSArray *)allURL
{
NSArray *urls = nil;
@synchronized (cookiesDictionary){
urls = [cookiesDictionary allKeys];
}
return urls ? urls : [NSArray array];
}
@end