iOS WKWebView 加载不被信任的 https 页面

1.设置 WKNavigationDelegate 代理

self.wkWebView.navigationDelegate = self;

2.实现代理函数

- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler {
    
    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
        if (challenge.previousFailureCount == 0) {
            NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
            completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
        } else {
            completionHandler(NSURLSessionAuthChallengeUseCredential, nil);
        }
    } else {
        completionHandler(NSURLSessionAuthChallengeUseCredential, nil);
    }
}