AFNetworking 2.0 使用总结

来源：互联网发布：饥荒左上角数据怎么关编辑：程序博客网时间：2024/05/20 20:22

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

        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。

2.JSON Get请求

        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。

3.图片上传

- (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。

[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...

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