1 #import "ViewController.h" 2  3 @interface ViewController () 4  5 @end 6  7 @implementation ViewController 8  9 #pragma mark ----------------------10 #pragma mark Events11 -(void)touchesBegan:(NSSet
     
       *)touches withEvent:(UIEvent *)event12 {13     [self post];14 }15 16 #pragma mark ----------------------17 #pragma mark Methods18 -(void)get19 {20     21     NSString *urlStr = @"http://120.25.226.186:32812/login2?username=小码哥&pwd=520it&type=JSON";22     23     NSLog(@"转码前: %@",urlStr);24     25     //中文转码处理：请求接口有中文26     urlStr =  [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];27     28     29     NSLog(@"转码后: %@",urlStr);30     31     //1.url32     NSURL *url = [NSURL URLWithString:urlStr];33     34     //http://120.25.226.186:32812/login2?username=%E5%B0%8F%E7%A0%81%E5%93%A5&pwd=520it&type=JSON35     36     NSLog(@"url------%@",url);37     38     //2.urlrequest39     NSURLRequest *request = [NSURLRequest requestWithURL:url];40     41     //3.connect42     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {43         44         45         //容错处理46         if (connectionError) {47             NSLog(@"%@",connectionError);48             return ;49         }50         //4.解析51         NSLog(@"%@",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);52     }];53 54 }55 56 -(void)post57 {58     //观察URL中是否有中文,如果有中文则需要转码59     NSString *urlStr = @"http://120.25.226.186:32812/login2";60     61     //username=小码哥&pwd=520it&type=JSON62     //1.url63     NSURL *url = [NSURL URLWithString:urlStr];64     65     //2.urlrequest66     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];67     68     //2.1 post69     request.HTTPMethod = @"POST";70     71     //2.2 body72     request.HTTPBody = [@"username=小码哥&pwd=520it&type=JSON" dataUsingEncoding:NSUTF8StringEncoding];73     74     //3.connect75     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {76         77         //容错处理78         if (connectionError) {79             NSLog(@"%@",connectionError);80             return ;81         }82         //4.解析83         NSLog(@"%@",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);84     }];85 86 }87 @end