AFNetworking 2.0 使用总结

iOS应用开发，存在网络请求是在所难免的，而AFNetworking是一个很不错的选择。以下是本人对AFNetworking请求的一些总结，但愿能帮到大家！

1.JSON Post请求

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NSString *strName = @"user1"; NSString *strPsw = @"pwd1";   AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFJSONRequestSerializer serializer]; NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:strName, @"user", strPsw, @"password", nil]; NSString *strURL = [GT123_ServerHost stringByAppendingString:GT123_LogonServlet]; [manager POST:strURL parameters:parameters       success:^(AFHTTPRequestOperation *operation, id responseObject)  {      if (responseObject != nil)      {          NSDictionary *dicRes = responseObject;          NSString *strState = [dicRes objectForKey:@"state"];          if (strState && [strState isEqualToString:@"success"])          {              NSString *strSession = [dicRes objectForKey:@"session"];                             NSLog(@"%@", strSession);          } else {          }      } else {      }  } failure:^(AFHTTPRequestOperation *operation, NSError *error)  {  }];

上段代码是用户登录请求，用到了AFHTTPRequestOperationManager的POST请求。请求参数放到NSDictionary里（NSMutableDictionary也可），strURL是请求服务地址，success和failure后面写请求回调内容。返回内容responseObject其实是一个NSDictionary对象，解析比较容易。

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2.JSON Get请求

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long long lTimestamp = [[NSDate date] timeIntervalSince1970] * 1000;   AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; NSString *strURL = [NSString stringWithFormat:@"%@%@?max=20&et=%lld",GT123_ServerHost,GT123_GetNewsListBeforeServlet, lTimestamp]; [manager GET:strURL parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {     if (responseObject != nil)     {         NSDictionary *dicRes = responseObject;         NSString *strState = [dicRes objectForKey:@"state"];         if (strState && [strState isEqualToString:@"success"])         {             NSArray *lNews = [dicRes objectForKey:@"post_list"];             if (lNews && lNews.count > 0)             {                 NSLog(@"news count - %lu", (unsigned long)lNews.count);             }         } else {         }     } else     {     } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { }];

上段代码是获取新闻列表的具体实现，用到了AFHTTPRequestOperationManager的GET请求。所以请求参数放到strURL里。请求返回内容responseObject也是一个NSDictionary对象。

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3.图片上传

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- (void)uploadImg:(UIImage *)img withName:(NSString *)imgName {           NSData *imageData = UIImageJPEGRepresentation(img, 1.0);           NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];     [parameters setObject:imgName forKey:@"name"];     [parameters setObject:@"jpg" forKey:@"type"];           AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];     manager.requestSerializer = [AFJSONRequestSerializer serializer];     NSString *strURL = [GT123_ServerHost stringByAppendingString:GT123_UploadPostPictureServlet];     [manager POST:strURL parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData)      {          if (imageData)          {              [formData appendPartWithFileData:imageData name:imgName fileName:imgName mimeType:@"image/jpeg"];          }      } success:^(AFHTTPRequestOperation *operation, id responseObject) {                     if (responseObject)          {              NSDictionary *dicRes = responseObject;              NSString *strState = [dicRes objectForKey:@"state"];              if (strState && [strState isEqualToString:@"success"])              {                  NSLog(@"upload success!");              } else {              }          } else {          }                 } failure:^(AFHTTPRequestOperation *operation, NSError *error) {      }]; }

以上代码通过post方法将图片上传到服务器。与上述所讲json post请求不同，这里需要填充constructingBodyWithBlock内容，也就是图片数据和参数。图片数据是NSData类型，需要将UIImage转成NSData。如果需要传其他参数的话，放到parameters里，同图片数据一起上传服务器。

 

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1	[formData appendPartWithFileData:imageData name:imgName fileName:imgName mimeType:@"image/jpeg"];

上一行代码里name和fileName参数可以随意给个值，不要太纠结。

返回内容还是一个NSDictionary对象。

 

 

AFNetworking请求方面，本人的总结暂时有这些，后续再补上...