1 五.AFN 2 1.GET\POST 3 1> GET请求 4 // 1.获得请求管理者 5 AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager]; 6  7 // 2.封装请求参数 8 NSMutableDictionary *params = [NSMutableDictionary dictionary]; 9 params[@"username"] = @"123";10 params[@"pwd"] = @"123";11 12 // 3.发送GET请求13 [mgr GET:@"http://baidu.com/login" parameters:params14  success:^(AFHTTPRequestOperation *operation, id responseObject) {15      NSLog(@"请求成功---%@", responseObject);16  }17  failure:^(AFHTTPRequestOperation *operation, NSError *error) {18      NSLog(@"请求失败---%@", error);19  }];20 21 22 2> POST请求23 // 1.获得请求管理者24 AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];25 26 // 2.封装请求参数27 NSMutableDictionary *params = [NSMutableDictionary dictionary];28 params[@"username"] = @"123";29 params[@"pwd"] = @"123";30 31 // 3.发送POST请求32 [mgr POST:@"http://baidu.com/login" parameters:params33  success:^(AFHTTPRequestOperation *operation, id responseObject) {34      NSLog(@"请求成功---%@", responseObject);35  }36  failure:^(AFHTTPRequestOperation *operation, NSError *error) {37      NSLog(@"请求失败---%@", error);38  }];39 40 2.文件上传41 // 1.获得请求管理者42 AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];43 44 // 2.发送请求(做文件上传)45 #warning parameters : 只能放非文件参数46 NSMutableDictionary *params = [NSMutableDictionary dictionary];47 params[@"username"] = @"zhangsan";48 49 [mgr POST:@"http://baidu.com/upload" parameters:params50 constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {51     // 一定要在这个block中添加文件参数52     53     // 加载文件数据54     NSString *file = [[NSBundle mainBundle] pathForResource:@"test.txt" ofType:nil];55     NSData *data =http://www.mamicode.com/ [NSData dataWithContentsOfFile:file];56     57     // 拼接文件参数58     [formData appendPartWithFileData:data name:@"file" fileName:@"123.txt" mimeType:@"text/plain"];59 }60   success:^(AFHTTPRequestOperation *operation, id responseObject) {61       NSLog(@"上传成功----%@", responseObject);62   } failure:^(AFHTTPRequestOperation *operation, NSError *error) {63       NSLog(@"上传失败----%@", error);64   }];