WKWebView 捕获 HTTP 错误代码

Question

当我 return 我的页面出现任何 http 错误时（当前为 401，但我也尝试使用 404 等等）

http://min60.com/__personal/e401.php

WKWebView 的委托回调不会return错误

- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error

- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {

如何捕获此类错误？

Answer 1

关键是等待响应然后检查对象，http代码没有调用错误

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

    if ([navigationResponse.response isKindOfClass:[NSHTTPURLResponse class]]) {

        NSHTTPURLResponse * response = (NSHTTPURLResponse *)navigationResponse.response;
        if (response.statusCode == 401) {

            // here we go

        }

    }
    decisionHandler(WKNavigationResponsePolicyAllow);
}

Answer 2

Swift版本：

public func webView(
    _ webView: WKWebView,
    decidePolicyFor navigationResponse: WKNavigationResponse,
    decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void
) {
    if
        let httpResponse = navigationResponse.response as? HTTPURLResponse,
        !(200..<400).contains(httpResponse.statusCode)
    {
        // Do something
    }

    decisionHandler(.allow)
}