费话不说，直接代码:

+(AFURLSessionManager*) getSessionManager{
    NSURLSessionConfiguration* config = [NSURLSessionConfiguration defaultSessionConfiguration];
    [config setTimeoutIntervalForRequest:HTTP_CONNECTION_TIMEOUT];  //设置请求时间
    [config setTimeoutIntervalForResource:HTTP_TIMEOUT];  //设置请求时间
    
    AFURLSessionManager* manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    ///////////////////***************增加https验证******************//////////////////
    NSString *certFilePath = [[NSBundle mainBundle] pathForResource:@"app" ofType:@"cer"];
    NSData *certData = [NSData dataWithContentsOfFile:certFilePath];
    NSSet *certSet = [NSSet setWithObject:certData];
    
    AFSecurityPolicy *securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate withPinnedCertificates:certSet];
    securityPolicy.allowInvalidCertificates = YES;//是否允许使用自签名证书
    securityPolicy.validatesDomainName = NO;//是否需要验证域名，默认YES

    manager.securityPolicy = securityPolicy;
    ///////////////////***************https验证结束******************//////////////////
    
    return manager;
}

Info.plist中修改:
NSAllowsArbitraryLoads为true