wkwebview 的cookie相关问题

对比跳转URL与页面URL的host，如果为跨域且未做处理，拦截该跳转，重新配置request的cookie信息，再loadRequest一下。（只适合加载mainFrame请求，iframe无效（注意））

• (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction )navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
  NSURL currentURL = [NSURL URLWithString:self.pageUrl];

  if ((![self.crossDomainURL isEqualToString:navigationAction.request.URL.absoluteString]) && (![currentURL.host isEqualToString:navigationAction.request.URL.host])) {

    self.crossDomainURL = navigationAction.request.URL.absoluteString;
  
    NSMutableURLRequest* request = [navigationAction.request mutableCopy];
  
    NSString* cookieValue = @"session=720bff297ea3866696380368f81fc4e4;token_id=NzIwYmZmMjk3ZWEzODY2Njk2MzgwMzY4ZjgxZmM0ZTQ=;uid=123456;";
  
    [request setValue:cookieValue forHTTPHeaderField:@"Cookie"];
  
    [webView loadRequest:request];
  
    decisionHandler(WKNavigationActionPolicyCancel);
  

  } else {
  decisionHandler(WKNavigationActionPolicyAllow);
  }

}

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