iOS UIWebView 和 WKWebView 的 cookie 獲取,設置,刪除

Cookie簡介 說到Cookie,或許有些小夥伴會比較陌生,有些小夥伴會比較熟悉。若是項目中,全部頁面都是純原生來實現的話,通常Cookie這個東西或許咱們永遠也不會接觸到。可是,這裏仍是要說一下Cookie,由於它真的很重要,由它產生的一些坑也不少。html

Cookie 在 web中應用比較多,主要是記錄一個狀態,好比我在網頁上登陸了,我就能夠拿到網頁登陸後 Cookie,下次再 Cookie 的生效期內我就能夠不用輸入帳號密碼,直接跳轉登陸狀態,在App中,Cookie最經常使用的也就是維持登陸狀態了.由於筆者最近就在作這個,其中也遇到過不少坑,這裏說先踩坑和用法ios

iOS Cookie 的管理web

NSHTTPCookie和NSHTTPCookieStorage iOS中進行HTTP網絡請求Cookie管理主要由兩個類負責,一個類是NSHTTPCookieStorage類,一個是NSHTTPCookie類。設計模式

NSHTTPCookieStorage跨域

NSHTTPCookieStorage類採用單例的設計模式,其中管理着全部HTTP請求的Cookie信息 官方解釋:NSHTTPCookieStorage 是一個用來管理 cookie 存儲的單例。一個 NSHTTPCookie 單例表明一個 cookie。一般來說,cookie 能夠在應用間共享,而且在進程之間保持同步。 對於單進程,Session cookies (這裏的 cookie 對象的 isSessionOnly 方法返回 YES)是局部的而且不能被共享。數組

經常使用方法緩存

// 獲取單例對象
+ (NSHTTPCookieStorage *)sharedHTTPCookieStorage;

// 全部Cookie數據數組 其中存放NSHTTPCookie對象
@property (nullable , readonly, copy) NSArray<NSHTTPCookie *> *cookies;

// 手動設置一條Cookie數據
- (void)setCookie:(NSHTTPCookie *)cookie;

// 刪除某條Cookie信息
- (void)deleteCookie:(NSHTTPCookie *)cookie;

// 刪除某個時間後的全部Cookie信息 iOS8後可用
- (void)removeCookiesSinceDate:(NSDate *)date NS_AVAILABLE(10_10, 8_0);

// 獲取某個特定URL的全部Cookie數據
- (nullable NSArray<NSHTTPCookie *> *)cookiesForURL:(NSURL *)URL;

// 爲某個特定的URL設置Cookie
- (void)setCookies:(NSArray<NSHTTPCookie *> *)cookies forURL:(nullable NSURL *)URL mainDocumentURL:(nullable NSURL *)mainDocumentURL;

// Cookie數據的接收協議
枚舉以下:
typedef NS_ENUM(NSUInteger, NSHTTPCookieAcceptPolicy) {
    NSHTTPCookieAcceptPolicyAlways,                     //接收全部Cookie信息
    NSHTTPCookieAcceptPolicyNever,                      //不接收全部Cookie信息
    NSHTTPCookieAcceptPolicyOnlyFromMainDocumentDomain  //只接收主文檔域的Cookie信息
};
@property NSHTTPCookieAcceptPolicy cookieAcceptPolicy;

系統下面的兩個通知與Cookie管理有關:
聽說,在Mac OS是cookie能夠共享的(Session cookies 不能共享),在Mac OS app中更改cookie的接收策略會影響到其餘正在運行的在使用cookie storage的app.這時NSHTTPCookieStorage會發出兩個通知:

// Cookie數據的接收協議改變時發送的通知
FOUNDATION_EXPORT NSString * const NSHTTPCookieManagerAcceptPolicyChangedNotification;
// 管理的Cookie數據發生變化時發送的通知
FOUNDATION_EXPORT NSString * const NSHTTPCookieManagerCookiesChangedNotification;

NSHTTPCookie介紹安全

NSHTTPCookie是具體的HTTP請求Cookie數據對象.cookie

// 下面兩個方法用於對象的建立和初始化 都是經過字典進行鍵值設置
- (nullable instancetype)initWithProperties:(NSDictionary<NSString *, id> *)properties;
+ (nullable NSHTTPCookie *)cookieWithProperties:(NSDictionary<NSString *, id> *)properties;

// 返回Cookie數據中可用於添加HTTP頭字段的字典
+ (NSDictionary<NSString *, NSString *> *)requestHeaderFieldsWithCookies:(NSArray<NSHTTPCookie *> *)cookies;

// 從指定的響應頭和URL地址中解析出Cookie數據
+ (NSArray<NSHTTPCookie *> *)cookiesWithResponseHeaderFields:(NSDictionary<NSString *, NSString *> *)headerFields forURL:(NSURL *)URL;

// Cookie數據中的屬性字典
@property (nullable, readonly, copy) NSDictionary<NSString *, id> *properties;

// 請求響應的版本
@property (readonly) NSUInteger version;

// 請求相應的名稱
@property (readonly, copy) NSString *name;

// 請求相應的值
@property (readonly, copy) NSString *value;

// 過時時間
@property (nullable, readonly, copy) NSDate *expiresDate;

// 請求的域名
@property (readonly, copy) NSString *domain;

//請求的路徑
@property (readonly, copy) NSString *path;

// 是不是安全傳輸
@property (readonly, getter=isSecure) BOOL secure;

// 是否只發送HTTP的服務
@property (readonly, getter=isHTTPOnly) BOOL HTTPOnly;

// 響應的文檔
@property (nullable, readonly, copy) NSString *comment;

// 相應的文檔URL
@property (nullable, readonly, copy) NSURL *commentURL;

// 服務端口列表
@property (nullable, readonly, copy) NSArray<NSNumber *> *portList;

HTTP cookie的屬性鍵 屬性 | 解讀網絡

NSHTTPCookieName        |	Cookie的名字
NSHTTPCookieValue       |	Cookie的值
NSHTTPCookieOriginURL   |	和域名同樣,NSHTTPCookieDomain或NSHTTPCookieOriginURL必須指定一個值
NSHTTPCookieVersion     |	接收器的版本
NSHTTPCookieDomain      |	域名
NSHTTPCookiePath        |	Cookie 存放路徑
NSHTTPCookieSecure      |   Cookie是否只應經過安全通道發送,設置Cookie的secure屬性爲true。
                            只會在HTTPS和SSL等安全協議中傳輸此類Cookie。默認爲false
NSHTTPCookieComment     |	包含Cookie的評論,只有有效的版本1的cookies或更高版本。 這頭字段是可選的
NSHTTPCookieCommentURL  |	接收器的評論URL
NSHTTPCookieDiscard     |   Cookie是否應在會議結束時丟棄NSString,字符串值必須是「true」或「假」。 
                            這個字段是可選的。 默認爲「假」,除非這是Cookie是第1版或以上,
                            NSHTTPCookieMaximumAge未指定,在這種狀況下,它被假定爲「TRUE」
NSHTTPCookieMaximumAge  |	NSString對象,包含一個整數,在Cookie內保持最多幾秒 。
                            僅適用於第1版和更高版本的有效。 默認爲「0」。 此字段是可選的
NSHTTPCookiePort        |	接收機的端口
  • UIWebView的 Cookie 機制

UIWebView 在瀏覽網頁後會將網頁中的 cookie 自動存入 NSHTTPCookieStorage 標準容器中,[NSHTTPCookieStorage sharedHTTPCookieStorage]這個單例管理,在後續訪問中會將 cookie 自動帶到 request 請求當中。而且在同一個app內多個UIWebView之間共享。

  • webView 中獲取 cookie
//加載成功
- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSString *requestUrl = webView.request.URL.absoluteString;
    NSLog(@" requestUrl: %@",requestUrl);
    
    //設置原始 cookie 根據key 存儲本地
    NSMutableArray *cookieArray = [[NSMutableArray alloc] init];
    
    //網頁加載完成取出 cookies
    NSArray *nCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];
    NSHTTPCookie *cookie;
    for (id c in nCookies) {
        if ([c isKindOfClass:[NSHTTPCookie class]]) {
            cookie=(NSHTTPCookie *)c;
            //我這裏是cookie存入字典中 去重
            if ([cookie value]) {
                //若是 vaule 值不爲 nil 存入字典中,
                [self.mutableDic setValue:[cookie value] forKey:[cookie name]];
            }
            //設置原始 cookie
            NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
            [cookieProperties setObject:cookie.name forKey:NSHTTPCookieName];
            [cookieProperties setObject:cookie.value forKey:NSHTTPCookieValue];
            [cookieProperties setObject:cookie.domain forKey:NSHTTPCookieDomain];
            [cookieProperties setObject:cookie.path forKey:NSHTTPCookiePath];
            [cookieProperties setObject:[[NSDate date] dateByAddingTimeInterval:2629743] forKey:NSHTTPCookieExpires];
            [cookieArray addObject:cookieProperties];
            
            [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
    }
}

//cookie 存入本地
[[NSUserDefaults standardUserDefaults] setObject:cookieArray forKey:@"cookieArray"];
[[NSUserDefaults standardUserDefaults] synchronize];

//下面 cookie 去重是爲了獲得 key=Value;形式的字符串,這裏因爲我有需求這樣作,實際中下面能夠忽略
NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
// cookie重複,先放到字典進行去重,再進行拼接
for (NSString *key in self.mutableDic) {
    NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [self.mutableDic valueForKey:key]];
    [cookieValue appendString:appendString];
}
NSLog(@"######################## %@ ####################",cookieValue);
  • 設置 cookie
NSMutableArray* cookieDictionary = [[NSUserDefaults standardUserDefaults] valueForKey:@"cookieArray"];

NSLog(@"cookie dictionary found is %@",cookieDictionary);

if (cookieDictionary) 
{
    for (NSInteger i = 0; i < cookieDictionary.count; i++) 
    {
        NSLog(@"cookie found is %@",[cookieDictionary objectAtIndex:i]);
        
        NSDictionary *cookieDic = [cookieDictionary objectAtIndex:i];
        NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieDic];
        [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
    }
}
//設置請求以前加載 cookie 確保 cookie 在請求頭以前設置
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:self.URLString] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

//加載網頁
[self.webView loadRequest:request];
  • 刪除 cookie
// 清空 cookie
- (void)deleteCookie {
    // 清空 cookie
    NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    NSArray *_tmpArray = [NSArray arrayWithArray:[cookieJar cookies]];
    for (id obj in _tmpArray) {
        [cookieJar deleteCookie:obj];
    }
}
  • WKWebView 的 Cookie 機制

NSURLCache和NSHTTPCookieStroage沒法操做(WKWebView)WebCore進程的緩存和Cookie WKWebView實例將會忽略任何的默認網絡存儲器(NSURLCache, NSHTTPCookieStorage, NSCredentialStorage) 和一些標準的自定義網絡請求類(NSURLProtocol,等等.),WKWebView實例不會把Cookie存入到App標準的的Cookie容器(NSHTTPCookieStorage)中,由於 NSURLSession/NSURLConnection等網絡請求使用NSHTTPCookieStorage進行訪問Cookie,因此不能訪問WKWebView的Cookie,現象就是WKWebView存了Cookie,其餘的網絡類如NSURLSession/NSURLConnection卻看不到。這是不少人的說法。 還有一種是說法是經過實踐發現 WKWebView 實例其實也會將 Cookie 存儲於 NSHTTPCookieStorage 中,但存儲時機有延遲,由於WKWebView內也有cookie的容器,並且每隔一段時間就和app側NSHTTPCookieStorage進行同步,並且這個同步是進程級別的同步,並且這個同步是單向。 至於以上兩種說法,最終WKWebView Cookie 問題在於 WKWebView 發起的請求不會自動帶上存儲於 NSHTTPCookieStorage 容器中的 Cookie。

  • iOS11 iOS11 的 API 能夠解決該問題,只要是存在 WKHTTPCookieStore 裏的 cookie,WKWebView 每次請求都會攜帶,存在 NSHTTPCookieStorage 的cookie,並不會每次都攜帶。因而會發生首次 WKWebView 請求不攜帶 Cookie 的問題。

  • ios 11 WKWebView cookie 的注入

在執行 -[WKWebView loadReques:] 前將 NSHTTPCookieStorage 中的內容複製到 WKHTTPCookieStore 中,以此來達到 WKWebView Cookie 注入的目的。示例代碼以下:

[self copyNSHTTPCookieStorageToWKHTTPCookieStoreWithCompletionHandler:^{
    NSURL *url = [NSURL URLWithString:@"https://www.v2ex.com"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [_webView loadRequest:request];
}];
- (void)copyNSHTTPCookieStorageToWKHTTPCookieStoreWithCompletionHandler:(nullable void (^)())theCompletionHandler; {

    NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];
    WKHTTPCookieStore *cookieStroe = self.webView.configuration.websiteDataStore.httpCookieStore;
    if (cookies.count == 0) {
        !theCompletionHandler ?: theCompletionHandler();
        return;
    }
    for (NSHTTPCookie *cookie in cookies) 
    {
        [cookieStroe setCookie:cookie completionHandler:^{
        if ([[cookies lastObject] isEqual:cookie]) 
        {
            !theCompletionHandler ?: theCompletionHandler();
            return;
        }
    }];
    }
}
  • ios11 以前 注入 Cookie 就是從以前保存 cookie 的 NSHTTPCookieStorage 中取出相關 Cookie,而後在再次請求訪問的時候在 request 中注入 Cookie。注入Cookie一樣有多種方式。

  • 1.JS注入1

//取出 storage 中的cookie並將其拼接成正確的形式

NSArray<NSHTTPCookie *> *tmp = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]; 
NSMutableString *jscode_Cookie = [@"" mutableCopy];

[tmp enumerateObjectsUsingBlock:^(NSHTTPCookie * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) 
{
    NSLog(@"%@ = %@", obj.name, obj.value);
    [jscode_Cookie appendString:[NSString stringWithFormat:@"document.cookie = '%@=%@';", obj.name, obj.value]];
}];

WKUserContentController* userContentController = WKUserContentController.new;
WKUserScript * cookieScript = [[WKUserScript alloc] initWithSource: @"" injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:NO];

[userContentController addUserScript:cookieScript];
WKWebViewConfiguration* webViewConfig = WKWebViewConfiguration.new;
webViewConfig.userContentController = userContentController;
WKWebView * webView = [[WKWebView alloc] initWithFrame:CGRectMake(/*set your values*/) configuration:webViewConfig];
  • JS注入2
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation 
{
    [webView evaluateJavaScript:@"document.cookie ='TeskCookieKey1=TeskCookieValue1';" completionHandler:^(id result, NSError *error) {
        //...
    }];
}
  • NSMutableURLRequest 注入Cookie
NSURL *url = request.URL;
NSMutableString *cookies = [NSMutableString string];
NSMutableURLRequest *requestObj = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

NSArray *tmp = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];
NSDictionary *dicCookies = [NSHTTPCookie requestHeaderFieldsWithCookies:tmp];
NSString *cookie = [self readCurrentCookie];
[requestObj setValue:cookie forHTTPHeaderField:@"Cookie"];
[_webView loadRequest:requestObj];


-(NSString *)readCurrentCookie
{
    NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
    NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
    NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (NSHTTPCookie *cookie in [cookieJar cookies]) {
        [cookieDic setObject:cookie.value forKey:cookie.name];
    }

    // cookie重複,先放到字典進行去重,再進行拼接
    for (NSString *key in cookieDic) {
    NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
        [cookieValue appendString:appendString];
    }
    return cookieValue;
}

獲取Cookie

因爲 WKWebView 的 Cookie 存儲容器 WKWebsiteDataStore 是私有存儲,因此沒法從這裏獲取到Cookie,目前的方法是(1)從網站返回的 response headerfields 中獲取。(2)經過調用js的方法獲取 cookie。

  • 1.從網站返回的 response headerfields 中獲取,由於cookie都存在http respone的headerfields,找到能得到respone的WKWebView回調,打印
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {

    NSHTTPURLResponse *response = (NSHTTPURLResponse *)navigationResponse.response;
    NSArray *cookies =[NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:response.URL];
    
    //讀取wkwebview中的cookie 方法1
    for (NSHTTPCookie *cookie in cookies) {
        // [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
        NSLog(@"wkwebview中的cookie:%@", cookie);
    }
    
    //讀取wkwebview中的cookie 方法2 讀取Set-Cookie字段
    NSString *cookieString = [[response allHeaderFields] valueForKey:@"Set-Cookie"];
    NSLog(@"wkwebview中的cookie:%@", cookieString);

    //看看存入到了NSHTTPCookieStorage了沒有
    NSHTTPCookieStorage *cookieJar2 = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (NSHTTPCookie *cookie in cookieJar2.cookies) {
       NSLog(@"NSHTTPCookieStorage中的cookie%@", cookie);
    }

    //下面是將 原始cookie本地 化
    NSMutableArray *cookieArray = [[NSMutableArray alloc] init];

    for (NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
    
        NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
        [cookieProperties setObject:cookie.name forKey:NSHTTPCookieName];
        [cookieProperties setObject:cookie.value forKey:NSHTTPCookieValue];
        [cookieProperties setObject:cookie.domain forKey:NSHTTPCookieDomain];
        [cookieProperties setObject:cookie.path forKey:NSHTTPCookiePath];
        [cookieProperties setObject:[NSNumber numberWithInt:cookie.version] forKey:NSHTTPCookieVersion];
        [cookieProperties setObject:[[NSDate date] dateByAddingTimeInterval:2629743] forKey:NSHTTPCookieExpires];
        [cookieArray addObject:cookieProperties];
    }

    [[NSUserDefaults standardUserDefaults] setValue:cookieArray forKey:@"cookieArray"];
    [[NSUserDefaults standardUserDefaults] synchronize];

    decisionHandler(WKNavigationResponsePolicyAllow);
}

// 頁面加載完成以後調用須要從新給WKWebView設置Cookie防止由於a標籤跳轉,致使下一次跳轉的時候Cookie丟失。
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{

    //取出cookie
    NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];

    //js函數
    NSString *JSFuncString =
    @"function setCookie(name,value,expires)\
    {\
        var oDate=new Date();\
        oDate.setDate(oDate.getDate()+expires);\
        document.cookie=name+'='+value+';expires='+oDate+';path=/'\
    }\
    function getCookie(name)\
    {\
        var arr = document.cookie.match(new RegExp('(^| )'+name+'=({FNXX==XXFN}*)(;|$)'));\
        if(arr != null) return unescape(arr[2]); return null;\
    }\
    function delCookie(name)\
    {\
        var exp = new Date();\
        exp.setTime(exp.getTime() - 1);\
        var cval=getCookie(name);\
        if(cval!=null) document.cookie= name + '='+cval+';expires='+exp.toGMTString();\
    }";
    
    //拼湊js字符串
    NSMutableString *JSCookieString = JSFuncString.mutableCopy;
    for (NSHTTPCookie *cookie in cookieStorage.cookies) {
        NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 1);", cookie.name, cookie.value];
        [JSCookieString appendString:excuteJSString];
    }
    //執行js
    [webView evaluateJavaScript:JSCookieString completionHandler:^(id obj, NSError * _Nullable error) {
        NSLog(@"%@",error);
    }];
}
  • 經過 JS 獲取 cookie
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation {

[webView evaluateJavaScript:[NSString stringWithFormat:@"document.cookie"] completionHandler:^(id _Nullable response, NSError * _Nullable error) {
    if (response != 0) {
        NSLog(@"\n\n\n\n\n\n document.cookie%@,%@",response,error);
    }
}];
}

##注意 document.cookie 的方法獲取 cookie並不支持跨越獲取,若是設置 httponly則獲取不到 cookie 不管是(1)仍是(2)方法,彷佛都沒法解決302請求的 Cookie 問題。舉例來講,假設你要訪問網站A,在A中點擊登陸,跳轉頁面到B地址,在B中完成登陸以後302跳轉回A網站。此時cookie是存在於B地址的 response 中的,在A地址的 response 中並無 cookie 的字段。然而咱們只能獲取到A地址的 response ,沒法截獲到B地址的response。所以獲取不到該類型網站的 cookie 。 因爲我並無遇到302這樣的問題,全部看了下網上的資料,但願對遇到這個問題的小夥伴一下辦法,網上給出的解決辦法是:

  • 1.加載一個本地爲空的html,域名指向你的第一次加載的url的域名。
//加載本地html
[self.webView loadHTMLString:@"" baseURL:[NSURL URLWithString:@"https:/a.com"]];
  • 2.經過如下方法,在第一次加載完成後,將須要設置的Cookies設置到WKWebView中,由於是加載的本地的html如下方法會當即執行。
// 頁面加載完成以後調用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{

    if (isFirstLoaded) {
        NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
        //js函數
        NSString *JSFuncString =
        @"function setCookie(name,value,expires)\
        {\
            var oDate=new Date();\
            oDate.setDate(oDate.getDate()+expires);\
            document.cookie=name+'='+value+';expires='+oDate+';path=/'\
        }";
        
        //拼湊js字符串,按照本身的需求拼湊Cookie
        NSMutableString *JSCookieString = JSFuncString.mutableCopy;
        for (NSHTTPCookie *cookie in cookieStorage.cookies) {
            if (![cookie.name isEqualToString:@"__cust"]) {
                NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 3);", cookie.name, cookie.value];
                [JSCookieString appendString:excuteJSString];
            }
        }
    
        //執行js
        [webView evaluateJavaScript:JSCookieString completionHandler:^(id obj, NSError * _Nullable error) 
        {
            //加載真正的第一次Request
            [self loadRealRequest];
        }];
    }
}

若是cookie 存儲到本地獲取本地的 cookie

//修改從 storage 中讀取 cookie 的方法
-(NSString *)readCurrentCookie{

    NSMutableArray* cookieDictionary = [[NSUserDefaults standardUserDefaults] valueForKey:@"cookieArray"];
    NSLog(@"cookie dictionary found is %@",cookieDictionary);
    
    for (int i=0; i < cookieDictionary.count; i++) {
        NSLog(@"cookie found is %@",[cookieDictionary objectAtIndex:i]);
        NSMutableDictionary* cookieDictionary1 = [[NSUserDefaults standardUserDefaults] valueForKey:[cookieDictionary objectAtIndex:i]];
        NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieDictionary1];
        [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
    }
    
    NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
    NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
    NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];

    for (NSHTTPCookie *cookie in [cookieJar cookies]) {
        [cookieDic setObject:cookie.value forKey:cookie.name];
    }
    
    // cookie重複,先放到字典進行去重,再進行拼接
    for (NSString *key in cookieDic) 
    {
        NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
        [cookieValue appendString:appendString];
    }
    return cookieValue;
}

清除 cookie

#pragma mark - 清空cookie
-(void)deleCookie {
    // NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    // NSArray *_tmpArray = [NSArray arrayWithArray:[cookieJar cookies]];
    // for (id obj in _tmpArray) {
    //  [cookieJar deleteCookie:obj];
    // }
    if (@available(iOS 9.0, *)) {//iOS9及以上
        WKWebsiteDataStore *dateStore = [WKWebsiteDataStore defaultDataStore];
        [dateStore fetchDataRecordsOfTypes:[WKWebsiteDataStore allWebsiteDataTypes]
        completionHandler:^(NSArray<WKWebsiteDataRecord *> * __nonnull records) 
        {
            for (WKWebsiteDataRecord *record in records)
            {
                //取消備註,能夠針對某域名作專門的清除,不然是所有清除
                //if ( [record.displayName containsString:@"baidu"])             
                //{
                    [[WKWebsiteDataStore defaultDataStore] removeDataOfTypes:record.dataTypes
                    forDataRecords:@[record] completionHandler:^
                    {
                        NSLog(@"Cookies for %@ deleted successfully",record.displayName);
                    }];
                //}
            }
        }];
    }
    else { //iOS9如下
        NSString *libraryPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0];
        NSString *cookiesFolderPath = [libraryPath stringByAppendingString:@"/Cookies"];
        NSError *errors;
        [[NSFileManager defaultManager] removeItemAtPath:cookiesFolderPath error:&errors];
    }
}

##最後 UIWebView 和 WKWebView 所遇到問題 cookie 同步,獲取,刪除,設置這些問題,目前就這麼多解決辦法吧,我一開始嘗試用 WKWebView 獲取 cookie 可是最後遇到網頁跨域問題以及低版本兼容問題我仍是換回 UIWebView 了,若是有更好的解決辦法能夠在下面留言,謝謝!

來自:http://www.javashuo.com/article/p-qwazqard-q.html

原文出處:https://www.cnblogs.com/benxiaokang/p/ios-uiwebview-he-wkwebview-de-cookie-huo-qu-she-zh.html

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