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    // 修改WebView的UserAgent

    UIWebView *webView = [UIWebView new];     NSString *userAgent = [webView stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];     NSString *appUserAgent = [NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], [[UIScreen mainScreen] scale]];     userAgent = [userAgent stringByAppendingString:@" "];     userAgent = [userAgent stringByAppendingString:appUserAgent];     [[NSUserDefaults standardUserDefaults] registerDefaults:@{@"UserAgent" : userAgent, @"User-Agent" : userAgent}];

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