AFNetworking2的SSL身份认证 -1022错误解决办法

错误说明，AFNetworking发送Https的网络请求时，往往会遇到-1012错误

Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. (NSURLErrorDomain error -1012.)" UserInfo=0x8d635f0 {NSErrorFailingURLKey=...URL...}

错误解决办法：

1、下载需要访问地址的cer证书或者别的格式转换出cer证书，放入mainbundle中

转换方法 openssl x509 -in 你的证书.crt -out 你的证书.cer -outform der

2、编写以下方法设置AFHTTPRequestOperationManager的securityPolicy属性，特别注意红字的两行代码

- (AFSecurityPolicy*)customSecurityPolicy
{
    /**** SSL Pinning ****/
    NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"证书名" ofType:@"cer"];
    NSData *certData = [NSData dataWithContentsOfFile:cerPath];
    AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];
    [securityPolicy setAllowInvalidCertificates:YES];
    [securityPolicy setValidatesCertificateChain:NO];
    [securityPolicy setPinnedCertificates:@[certData]];
    [securityPolicy setSSLPinningMode:AFSSLPinningModeCertificate];
    /**** SSL Pinning ****/
    return securityPolicy;
}
2 设置manager

AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
    [mgr setSecurityPolicy:[self customSecurityPolicy]];
3发送请求：

NSDictionary *params = @{ 参数 };
    [mgr GET:"URL字符串" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        成功代码
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
失败代码
    }];