基于OC的网络请求

-(void)request{ NSString *urlstr=@"url"; NSURL*url=[NSURL URLWithString:urlstr]; //初始化一个可变请求 NSMutableURLRequest*requset=[NSMutableURLRequest requestWithURL:url]; //设置超时时间 requset.timeoutInterval=5; [requset setCachePolicy:NSURLRequestReturnCacheDataElseLoad]; requset.HTTPMethod=@"GET"; NSURLSession*session=[NSURLSession sharedSession]; NSURLSessionDataTask*dataTask=[session dataTaskWithRequest:requset completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) { if (error==nil) { //获取相应信息 NSString *content=[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"%@",content); @try { //解析json NSData*data=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; } @catch (NSException *exception) { NSLog(@"解析错误00"); } @finally { } }else{ NSLog(@"加载失败请重新尝试"); } }]; [dataTask resume]; }