iOS:webview使用(一)--https链接

最新推荐文章于 2022-04-21 17:47:13 发布

晴-_-天

最新推荐文章于 2022-04-21 17:47:13 发布

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分类专栏： iOS.sdk.User Experience iOS 文章标签： webview url uiwebview ios

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本文详细介绍了如何解决在iOS中使用UIWebView加载HTTPS站点时遇到的NSURLErrorDomaincode=-1202错误，通过重写特定的方法允许使用自签名证书，从而成功加载网页。

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当使用UIWebview加载https的站点时webview总是会报NSURLErrorDomain code=-1202，导致网页加载失败。自己打印错误和网上搜索是因为证书失效，https使用超文本安全传输协议，即超文本传输协议（HTTP）和SSL/TLS的组合，用以提供加密通讯及对网络服务器身份的鉴定。当我们的服务器使用自我签名证书时，而UIWebView不允许使用自签名证书，所以导致加载失败。

解决办法： you're using a self-signed certificate, it's necessary to add some additional code.Because by default iOS will reject all untrusted https connections。重写下面俩个方法：

-(BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace;
-(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge;

#import "ClassCon.h"
//  For now, I've hard coded the IP address of my trusted server.
#define TRUSTED_HOST @"192.168.1.2"

@implementation ClassCon {
    NSMutableData *contentData;
    NSURLConnection *conn;
}
-(void) loadContent {
    contentData = [NSMutableData data];
    NSString *contentURL = @"our url";
    conn = [[NSURLConnection alloc] initWithRequest:
            [NSURLRequest requestWithURL:[NSURL URLWithString:contentURL]] delegate:self];

}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [contentData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    NSLog(@"Bad: %@", [error description]);
    ContentResponse *response = [[ContentResponse alloc]initWithRc:-999 andDescr:@"error" andAction:0];
    conn = nil;
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
        NSString *loadedContent = [[NSString alloc] initWithData:
                                     contentData encoding:NSUTF8StringEncoding];
        NSLog(@"Loaded content: %@",loadedContent);

    }

// ------------ ByPass ssl starts ----------
-(BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:
(NSURLProtectionSpace *)protectionSpace {
    return [protectionSpace.authenticationMethod
            isEqualToString:NSURLAuthenticationMethodServerTrust];
}

-(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:
(NSURLAuthenticationChallenge *)challenge {
    if (([challenge.protectionSpace.authenticationMethod
          isEqualToString:NSURLAuthenticationMethodServerTrust])) {
        if ([challenge.protectionSpace.host isEqualToString:TRUSTED_HOST]) {
            NSLog(@"Allowing bypass...");
            NSURLCredential *credential = [NSURLCredential credentialForTrust:
                                           challenge.protectionSpace.serverTrust];
            [challenge.sender useCredential:credential
                 forAuthenticationChallenge:challenge];
        }
    }
    [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
}
// -------------------ByPass ssl ends
@end