1、修改AFNetworking中修改源码，在AFSecurityPolicy.m注释掉这几句

- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust  
                  forDomain:(NSString *)domain  
{  
//    if (domain && self.allowInvalidCertificates && self.validatesDomainName && (self.SSLPinningMode == GMAFSSLPinningModeNone || [self.pinnedCertificates count] == 0)) {  
//        // https://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/OverridingSSLChainValidationCorrectly.html  
//        //  According to the docs, you should only trust your provided certs for evaluation.  
//        //  Pinned certificates are added to the trust. Without pinned certificates,  
//        //  there is nothing to evaluate against.  
//        //  
//        //  From Apple Docs:  
//        //          "Do not implicitly trust self-signed certificates as anchors (kSecTrustOptionImplicitAnchors).  
//        //           Instead, add your own (self-signed) CA certificate to the list of trusted anchors."  
//        NSLog(@"In order to validate a domain name for self signed certificates, you MUST use pinning.");  
//        return NO;  
//    }  

或者可以添加一个宏开关“openHttpsSSL”，便于控制，类似如下代码

- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust
                  forDomain:(NSString *)domain
{
    if (openHttpsSSL && domain && self.allowInvalidCertificates && self.validatesDomainName && (self.SSLPinningMode == AFSSLPinningModeNone || [self.pinnedCertificates count] == 0)) {
        // https://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/OverridingSSLChainValidationCorrectly.html
        //  According to the docs, you should only trust your provided certs for evaluation.
        //  Pinned certificates are added to the trust. Without pinned certificates,
        //  there is nothing to evaluate against.
        //
        //  From Apple Docs:
        //          "Do not implicitly trust self-signed certificates as anchors (kSecTrustOptionImplicitAnchors).
        //           Instead, add your own (self-signed) CA certificate to the list of trusted anchors."
        NSLog(@"In order to validate a domain name for self signed certificates, you MUST use pinning.");
        return NO;
    }

2、在使用的时候添加

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];  
            manager.responseSerializer = [AFHTTPResponseSerializer serializer];  
            manager.requestSerializer = [AFJSONRequestSerializer serializer];  
  
            AFSecurityPolicy *securityPolicy = [AFSecurityPolicy defaultPolicy];  
            // allowInvalidCertificates 是否允许无效证书（也就是自建的证书），默认为NO  
            // 如果是需要验证自建证书，需要设置为YES  
            securityPolicy.allowInvalidCertificates = YES;  
            manager.securityPolicy = securityPolicy;  

3、如果需要在http 头里面添加用户名和密码验证，添加

[request.operationManager.requestSerializer setAuthorizationHeaderFieldWithUsername:@"用户名" password:@"密码"];