iOS-WKWebView跳转新页面之同步Cookie

iOS8之后有了WKWebView,相信都知道WKWebView比UIWebView性能好很多,然而真正用起来,你会发现WKWebView各种坑...比如同步Cookie，JS-OC的相互调用，我曾经有几次想换回UIWebView,网上看了各种关于WKWebView的,发现很多最终都换回了UIWebView...

本文章是参照简友 Caiflower WKWebView之同步Cookie - WKWebView踩坑记录给自己做个记录，解决在push出新的WKWebView页面的时候无法共用一个Cookie的问题

WKWebView有自己的缓存机制,如果想同步session需要注意

1.使用全局的processPool

@interface XXWebKitSupport : NSObject

@property (nonatomic, strong,readonly) WKProcessPool *processPool;

+ (instancetype)sharedSupport;

@end

@interface XXWebKitSupport ()

@property (nonatomic, strong) WKProcessPool *processPool;

@end

@implementation XXWebKitSupport

+ (instancetype)sharedSupport {

static XXWebKitSupport *_instance;

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

_instance = [XXWebKitSupport new]; });

return _instance;

}

- (instancetype)init {

if (self = [super init]) {

self.processPool = [WKProcessPool new];

}

return self;

}

2.在ViewController页面中初始化WKWebView

- (WKWebView *)myWebView {

if (_myWebView == nil) {

WKUserContentController* userContentController = [WKUserContentController new];    NSMutableString *cookies = [NSMutableString string];

WKUserScript * cookieScript = [[WKUserScript alloc] initWithSource:[cookies copy] injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:NO]; [userContentController addUserScript:cookieScript];

WKWebViewConfiguration *configuration = [WKWebViewConfiguration new]; // 设置偏好设置 configuration.preferences = [[WKPreferences alloc] init]; // 默认为0 configuration.preferences.minimumFontSize = 10; // 默认认为YES configuration.preferences.javaScriptEnabled = YES; // 在iOS上默认为NO，表示不能自动通过窗口打开

configuration.preferences.javaScriptCanOpenWindowsAutomatically = NO;

   // web内容处理池 // 全局使用同一个processPool

configuration.processPool = [[XXWebKitSupport sharedSupport] processPool];

//注册回调 JS -> OC

[userContentController addScriptMessageHandler:self name:@"showSendMsg"]；

[userContentController addScriptMessageHandler:self name:@"onOrderStart"];

[userContentController addScriptMessageHandler:self name:@"shopAppTitle"]; [userContentController addScriptMessageHandler:self name:@"onClose"];    [userContentController addScriptMessageHandler:self name:@"setBarTitle"];       configuration.userContentController = userContentController;

WKWebView *webView = [[WKWebView alloc]initWithFrame:CGRectMake(0, SafeAreaTopHeight, kDeviceWidth, KDeviceHeight -SafeAreaTopHeight)configuration:configuration]; webView.navigationDelegate = self;

webView.scrollView.scrollEnabled = YES;

webView.backgroundColor = CCCUIColorFromHex(0xf7f7f7);

// 允许左右划手势导航，默认允许

webView.allowsBackForwardNavigationGestures = YES;

_myWebView = webView;

[self.myWebView setValue:[NSValue valueWithUIEdgeInsets:self.myWebView.scrollView.contentInset] forKey:@"_obscuredInsets"];

}

return _myWebView;

}

3.在WKNavigationDelegate代理方法中将Cookie设置到本地

- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(

WKNavigationResponsePolicy))decisionHandler{

NSHTTPURLResponse *response = (NSHTTPURLResponse *)navigationResponse.response; // 获取cookie,并设置到本地

NSArray *cookies =[NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:response.URL];

for (NSHTTPCookie *cookie in cookies) {

[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];

}

decisionHandler(WKNavigationResponsePolicyAllow);

}

4.在WKWebView加载请求的时候注入Cookie

NSMutableString *cookies = [NSMutableString string];

NSMutableURLRequest *requestObj = [NSMutableURLRequest requestWithURL:_reqString cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

// 一般都只需要同步JSESSIONID,可视不同需求自己做更改

NSString * JSESSIONID;

// 获取本地所有的Cookie

NSArray *tmp = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

for (NSHTTPCookie * cookie in tmp) {

if ([cookie.name isEqualToString:@"JSESSIONID"]) {

JSESSIONID = cookie.value;

break;

}

}

if (JSESSIONID.length) {

// 格式化Cookie

[cookies appendFormat:@"JSESSIONID=%@;",JSESSIONID];

}

// 注入Cookie

[requestObj setValue:cookies forHTTPHeaderField:@"Cookie"];

// 加载请求

[self.myWebView loadRequest:requestObj];

经过以上几步已经可以同步Cookie了。

网上查过很多资料具体还是要是自己本身项目情况而定