iOS利用AFNetworking（AFN) 实现图片上传

1.上传图片以二进制流的形式上传

1 #pragma mark - 文件上传

 2 - (IBAction)uploadImage

 3 {

 4     /*

 5      此段代码如果需要修改，可以调整的位置

 6      

 7      1. 把upload.php改成网站开发人员告知的地址

 8      2. 把file改成网站开发人员告知的字段名

 9      */

10     // 1. httpClient->url

11     

12     // 2. 上传请求POST

13     NSURLRequest *request = [_httpClient multipartFormRequestWithMethod:@"POST" path:@"upload.php" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

14         // 在此位置生成一个要上传的数据体

15         // form对应的是html文件中的表单

16         

17         

18         UIImage *image = [UIImage imageNamed:@"头像1"];

19         NSData *data = UIImagePNGRepresentation(image);

20         

21         // 在网络开发中，上传文件时，是文件不允许被覆盖，文件重名

22         // 要解决此问题，

23         // 可以在上传时使用当前的系统事件作为文件名

24         NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

25         // 设置时间格式

26         formatter.dateFormat = @"yyyyMMddHHmmss";

27         NSString *str = [formatter stringFromDate:[NSDate date]];

28         NSString *fileName = [NSString stringWithFormat:@"%@.png", str];

29         

30         

31         /*

32          此方法参数

33          1. 要上传的[二进制数据]

34          2. 对应网站上[upload.php中]处理文件的[字段"file"]

35          3. 要保存在服务器上的[文件名]

36          4. 上传文件的[mimeType]

37          */

38         [formData appendPartWithFileData:data name:@"file" fileName:fileName mimeType:@"image/png"];

39     }];//file改为后台接收的字段或参数

40     

41     // 3. operation包装的urlconnetion

42     AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];

43     

44     [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

45         NSLog(@"上传完成");

46     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

47         NSLog(@"上传失败->%@", error);

48     }];

49     

50     //执行

51     [_httpClient.operationQueue addOperation:op];

当要上传多张图片时只需在multipartFormRequestWithMethod方法上添加这些代码就好

AFNetWorking使用multipartFormRequestWithMethod方法上传多张图片问题

int i=0;

NSMutableURLRequest *request = [[AFNetWorkSingleton shareInstance] multipartFormRequestWithMethod:@"POST" path:@"Mindex/getimg" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>formData){

    for(UIImage *eachImage in array)

    {

        NSData *imageData = UIImageJPEGRepresentation(eachImage,0.5);

        [formData appendPartWithFileData:imageData name:[NSString stringWithFormat:@"file%d",i ] fileName:[NSString stringWithFormat:@"abc%d.jpg",i ] mimeType:@"image/jpeg"];//file改为后台接收的字段或参数

        i++;

    }

}];

2.上传图片以二进制流的字符串的形式上传

-(void)postPhotosToShare_API23_withPid:(NSString *)_pid andUid:(NSString *)_uid andScore:(float)_score andContent:(NSString *)_content andAnonymous:(NSString *)_anonymous andImgArray:(NSMutableArray *)_imgArray

{

path = @"interface/product.php/product/";//path为网站开发人员告知的除去IP后的地址

NSURL *baseUrl1 = [NSURL URLWithString:urlIP];//urlIP为网站开发人员告知的IP地址，例：http://192..168.1.1

httpClient = [[AFHTTPClient alloc]initWithBaseURL:baseUrl1];

NSMutableDictionary *parameters = [[NSMutableDictionary alloc]init];

[parameters setObject:_pid forKey:@"pid"];

[parameters setObject:_uid forKey:@"uid"];

[parameters setObject:[NSString stringWithFormat:@"%f",_score] forKey:@"score"];

[parameters setObject:_content forKey:@"content"];

[parameters setObject:_anonymous forKey:@"anonymous"];

if (_imgArray.count!=0)

{

int imgCount=0;

for (UIImage *myImg in _imgArray)

{

NSData *imageData = UIImageJPEGRepresentation(myImg,0.7);//进行图片压缩

NSString *_encodedImageStr = [imageData base64Encoding];//进行64位转码转为字符串

[parameters setObject:_encodedImageStr forKey:[NSString stringWithFormat:@"img[%i]",imgCount]];//进行img[%i]改为后台接收的字段或参数

imgCount ++;

}

}

request = [httpClient requestWithMethod:@"POST" path:path parameters:parameters];

[request setTimeoutInterval:kDataExpiryTime];//设置请求时间

[AFJSONRequestOperation addAcceptableContentTypes:[NSSet setWithObject:@"text/html"]];

AFJSONRequestOperation *operation = [[AFJSONRequestOperation alloc]initWithRequest:request];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:operation.responseData options:NSJSONReadingMutableContainers error:nil];

[self getResultSuccess:json withTage:Get_API_Tag_23];//对api进行标记，可要可不要

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

[self getResultFailed:error];

}];

[operation start];

}