1.NSURLConnection
2.AFNetworking
3.CFNetwork
//NSURLConnection
//发送同步请求代码
// 1.设置请求路径
NSString*urlStr=[NSStringstringWithFormat:@"http://192.168.1.53:8080/MJServer/login?username=%@&pwd=%@",self.username.text,self.pwd.text];
NSURL*url=[NSURLURLWithString:urlStr];
// 2.创建请求对象
NSURLRequest*request=[NSURLRequestrequestWithURL:url];
// 3.发送请求
//发送同步请求,在主线程执行
NSData*data=[NSURLConnectionsendSynchronousRequest:request returningResponse:nil error:nil];
//(一直在等待服务器返回数据,这行代码会卡住,如果服务器没有返回数据,那么在主线程UI会卡住不能继续执行操作)
NSLog(@"--%d--",data.length);
//发送异步请求代码
// 1.设置请求路径
NSString*urlStr=[NSStringstringWithFormat:@"http://192.168.1.53:8080/MJServer/login?username=%@&pwd=%@",self.username.text,self.pwd.text];
NSURL*url=[NSURLURLWithString:urlStr];
// 2.创建请求对象
NSURLRequest*request=[NSURLRequestrequestWithURL:url];
// 3.发送请求
//3.1发送同步请求,在主线程执行
// NSData *data=[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
//(一直在等待服务器返回数据,这行代码会卡住,如果服务器没有返回数据,那么在主线程UI会卡住不能继续执行操作)
//3.1发送异步请求
//创建一个队列(默认添加到该队列中的任务异步执行)
// NSOperationQueue *queue=[[NSOperationQueue alloc]init];
//获取一个主队列
NSOperationQueue*queue=[NSOperationQueuemainQueue];
[NSURLConnectionsendAsynchronousRequest:requestqueue:queuecompletionHandler:^(NSURLResponse*response,NSData*data,NSError*connectionError){
NSLog(@"--block回调数据--%@---%d",[NSThreadcurrentThread],data.length);
//隐藏HUD,刷新UI的操作一定要放在主线程执行
[MBProgressHUDhideHUD];
//解析data
/*
{"success":"登录成功"}
{"error":"用户名不存在"}
{"error":"密码不正确"}
*/
NSDictionary*dict=[NSJSONSerializationJSONObjectWithData:data options:NSJSONReadingMutableLeaveserror:nil];
NSLog(@"%@",dict);
//判断后,在界面提示登录信息
NSString*error=dict[@"error"];
if(error){
[MBProgressHUDshowError:error];
}else
{
NSString*success=dict[@"success"];
[MBProgressHUDshowSuccess:success];
}
}];
NSLog(@"请求发送完毕");
//使用异步方法发送get请求
// 2.1设置请求路径
NSString*urlStr=[NSStringstringWithFormat:@"http://192.168.1.53:8080/MJServer/login?username=%@&pwd=%@",self.username.text,self.pwd.text];
NSURL*url=[NSURLURLWithString:urlStr];
// 2.2创建请求对象
// NSURLRequest *request=[NSURLRequest requestWithURL:url];//默认就是GET请求
//设置请求超时
NSMutableURLRequest*request=[NSMutableURLRequestrequestWithURL:url];
request.timeoutInterval=5.0;
// 2.3.发送请求
//使用代理发送异步请求(通常应用于文件下载)
NSURLConnection*conn=[NSURLConnectionconnectionWithRequest:requestdelegate:self];
[conn start];
NSLog(@"已经发出请求---");
}
#pragmamark-NSURLConnectionDataDelegate代理方法
/*
*当接收到服务器的响应(连通了服务器)时会调用
*/
-(void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse*)response
{
NSLog(@"接收到服务器的响应");
//初始化数据
self.responseData=[NSMutableDatadata];
}
/*
*当接收到服务器的数据时会调用(可能会被调用多次,每次只传递部分数据)
*/
-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
NSLog(@"接收到服务器的数据");
//拼接数据
[self.responseData appendData:data];
NSLog(@"%d---%@--",self.responseData.length,[NSThreadcurrentThread]);
}
/*
*当服务器的数据加载完毕时就会调用
*/
-(void)connectionDidFinishLoading:(NSURLConnection*)connection
{
NSLog(@"服务器的数据加载完毕");
//隐藏HUD
[MBProgressHUDhideHUD];
//处理服务器返回的所有数据
NSDictionary*dict=[NSJSONSerializationJSONObjectWithData:self.responseData options:NSJSONReadingMutableLeaveserror:nil];
//判断后,在界面提示登录信息
NSString*error=dict[@"error"];
if(error){
[MBProgressHUDshowError:error];
}else
{
NSString*success=dict[@"success"];
[MBProgressHUDshowSuccess:success];
}
NSLog(@"%d---%@--",self.responseData.length,[NSThreadcurrentThread]);
}
/*
*请求错误(失败)的时候调用(请求超时\断网\没有网\,一般指客户端错误)
*/
-(void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
// NSLog(@"请求错误");
//隐藏HUD
[MBProgressHUDhideHUD];
[MBProgressHUDshowError:@"网络繁忙,请稍后重试!"];
}
另外,
NSMutableURLRequest是NSURLRequest的子类,常用方法有
设置请求超时等待时间(超过这个时间就算超时,请求失败)-(void)setTimeoutInterval:(NSTimeInterval)seconds;
设置请求方法(比如GET和POST)-(void)setHTTPMethod:(NSString*)method;
设置请求体-(void)setHTTPBody:(NSData*)data;
设置请求头-(void)setValue:(NSString*)value forHTTPHeaderField:(NSString*)field;
使用NSURLConnection请求HTTPS(SSL)接口
//使用NSURLConnection连接HTTPS站点,需要处理SSL认证,NSURLConnectionDelegate中定义了一些方法来处理认证
//–connection:canAuthenticateAgainstProtectionSpace:
//–connection:didReceiveAuthenticationChallenge:
//一.NSURLConnection中处理SSL
-(BOOL)connection:(NSURLConnection*)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace*)protectionSpace{
return[protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
//如果接受任何证书
-(void)connection:(NSURLConnection*)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge*)challenge{
[challenge.sender useCredential:[NSURLCredentialcredentialForTrust:challenge.protectionSpace.serverTrust]forAuthenticationChallenge:challenge];
}
//如果使用证书验证
-(void)connection:(NSURLConnection*)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge*)challenge
{
staticCFArrayRefcerts;
if(!certs){
NSData*certData=[NSDatadataWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"srca"ofType:@"cer"]];
SecCertificateRefrootcert=SecCertificateCreateWithData(kCFAllocatorDefault,CFBridgingRetain(certData));
constvoid*array[1]={rootcert};
certs=CFArrayCreate(NULL,array,1,&kCFTypeArrayCallBacks);
CFRelease(rootcert);// for completeness, really does not matter
}
SecTrustReftrust=[[challenge protectionSpace]serverTrust];
interr;
SecTrustResultTypetrustResult=0;
err=SecTrustSetAnchorCertificates(trust,certs);
if(err==noErr){
err=SecTrustEvaluate(trust,&trustResult);
}
CFRelease(trust);
BOOL trusted=(err==noErr)&&((trustResult==kSecTrustResultProceed)||(trustResult==kSecTrustResultConfirm)||(trustResult==kSecTrustResultUnspecified));
if(trusted){
[challenge.sender useCredential:[NSURLCredentialcredentialForTrust:challenge.protectionSpace.serverTrust]forAuthenticationChallenge:challenge];
}else{
[challenge.sender cancelAuthenticationChallenge:challenge];
}
}
AFNetworking:
AFNetworking下载地址:https://github.com/AFNetworking/AFNetworking
AFNetworking框架中处理SSL
使用AFURLConnectionOperation类的下面两个方法,分别将上述代码以block方式传入即可。
–setAuthenticationAgainstProtectionSpaceBlock:
–setAuthenticationChallengeBlock: