首先介绍下AFNetworking中的使用：

2.0要注意个地方：IOS7及其以后，采用AFHTTPSessionManager，IOS7之前采用AFHTTPRequestOperationManager。

以AFHTTPSessionManager为例，代码如下：

<span style="font-size:14px;">AFHTTPSessionManager   *httpClient = [AFHTTPSessionManager manager];httpClient.requestSerializer = [AFHTTPRequestSerializer serializer];httpClient.responseSerializer = [AFHTTPResponseSerializer serializer];// SSL PinningNSString *certificatePath = [[NSBundle mainBundle] pathForResource:@"certificate" ofType:@"der"];NSData *certificateData = [NSData dataWithContentsOfFile:certificatePath];AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];[securityPolicy setAllowInvalidCertificates:YES];[securityPolicy setPinnedCertificates:@[certificateData]];[securityPolicy setSSLPinningMode:AFSSLPinningModeCertificate];[httpClient setSecurityPolicy:securityPolicy];[httpClient GET:@"http://xxxx" parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {} failure:^(NSURLSessionDataTask *task, NSError *error) {//失败信息}];</span>

<span style="font-size:14px;">AFHTTPRequestOperationManager *httpClient1 = [AFHTTPRequestOperationManager manager];httpClient1.requestSerializer = [AFHTTPRequestSerializer serializer];httpClient1.responseSerializer = [AFHTTPResponseSerializer serializer];// SSL PinningNSString *certificatePath1 = [[NSBundle mainBundle] pathForResource:@"certificate" ofType:@"der"];NSData *certificateData1 = [NSData dataWithContentsOfFile:certificatePath1];AFSecurityPolicy *securityPolicy1 = [[AFSecurityPolicy alloc] init];[securityPolicy1 setAllowInvalidCertificates:YES];[securityPolicy1 setPinnedCertificates:@[certificateData1]];[securityPolicy1 setSSLPinningMode:AFSSLPinningModeCertificate];[httpClient setSecurityPolicy:securityPolicy1];[httpClient1 GET:@"http://xxxx" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {//成功信息} failure:^(AFHTTPRequestOperation *operation, NSError *error) {//失败信息}];</span>

以ASIFormDataRequest为例，代码如下：

<span style="font-size:14px;">ASIFormDataRequest * request;request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:@""]];NSData *cerFile = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"d1" ofType:@"cer"]];SecCertificateRef cert = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)cerFile);NSArray *array = [NSArray arrayWithObjects:(__bridge id)cert,nil];[request setClientCertificates:array];[request setValidatesSecureCertificate:NO];[request startSynchronous];</span>

ASIHTTPRequest的参考http://www.tuicool.com/articles/UN3AveR，代码就不贴了。