NSURLConnection 实现webView显示HTTPS页面

来源：互联网发布：红包自动抢软件编辑：程序博客网时间：2024/05/22 09:07

我们在浏览器访问https页面的时候的，会弹出：
我们接下来信任证书以及显示出来

遵循协议

@interface ViewController ()<NSURLConnectionDataDelegate>

interface：

@interface ViewController ()<NSURLConnectionDataDelegate>/** -  存储data数据 */@property(nonatomic,strong)NSMutableData *dataM;/** -  访问url链接 */@property(nonatomic,strong)NSURL *url;@property(nonatomic,weak)IBOutlet UIWebView *webView;@end

viewDidLoad:创建url以及发送请求

- (void)viewDidLoad {    [super viewDidLoad];    self.url = [NSURL URLWithString:@"https://mail.com"];    NSURLRequest *request = [NSURLRequest requestWithURL:self.url];    //发送请求    [NSURLConnection connectionWithRequest:request delegate:self];}

实现代理方法：

#pragma mark - NSURLSessionDataDelegate代理方法- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)taskdidReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * __nullable credential))completionHandler{    NSLog(@"challenge = %@",challenge.protectionSpace.serverTrust);    //判断是否是信任服务器证书    if (challenge.protectionSpace.authenticationMethod ==NSURLAuthenticationMethodServerTrust)    {        //创建一个凭据对象        NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];        //告诉服务器客户端信任证书        [challenge.sender useCredential:credential forAuthenticationChallenge:challenge];    }}/** *  接收到服务器返回的数据时调用 */- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    NSLog(@"接收到的数据%zd",data.length);    [self.dataM appendData:data];}/** *  请求完毕 */- (void)connectionDidFinishLoading:(NSURLConnection *)connection{    NSString *html = [[NSString alloc]initWithData:self.dataM encoding:NSUTF8StringEncoding];    NSLog(@"请求完毕");    [self.webView loadHTMLString:html baseURL:self.url];}

懒加载：

- (NSMutableData *)dataM{    if (_dataM == nil)    {        _dataM = [[NSMutableData alloc]init];    }    return _dataM;}

至此，我们已经实现了https数据的展示：

注意：

NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9843) 原因：没有信任服务器证书

在下面这个方法中：

 - (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)taskdidReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * __nullable credential))completionHandler()

我们通过protectionSpace.authenticationMethod判断是否信任服务器证书
- NSURLSessionAuthChallengeUseCredential = 0, 使用凭据，信任服务器证书
- NSURLSessionAuthChallengePerformDefaultHandling = 1, 默认处理，忽略服务器证书
- NSURLSessionAuthChallengeCancelAuthenticationChallenge = 2, 整个请求被取消凭据被忽略
- NSURLSessionAuthChallengeRejectProtectionSpace = 3, 本次拒绝，下次重试

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