Question

我成功地将图像转换为base64字符串，但是当我服务于服务器时，服务器会获得损坏的数据我正在使用http://codebeautify.org/base64-to-image-converter#来获取正确的图像输出

 NSString *base64String=[UIImagePNGRepresentation(ProfileImageView.image)
    base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn];
 [base64String stringByReplacingOccurrencesOfString:@"\n\r" withString:@""];
 [base64String stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];  


   NSString *post =[[NSString alloc] initWithFormat:@"UserId=%@&UserName=%@&Password=%@&Email=%@&MobileNo=%@&Profiledata=%@",[_DicData valueForKey:@"userId"],[_DicData valueForKey:@"userName"],[_DicData valueForKey:@"password"] ,[_DicData valueForKey:@"email"],MobileNumberLable.text,base64String];

    NSString *strurl2=@"api/UpdateUserProfledata/";
    NSString *strurl=[NSString stringWithFormat:@"%@%@",_Url1,strurl2];
    NSURL *url=[NSURL URLWithString:strurl];
    NSData *postData= [post dataUsingEncoding:NSUTF8StringEncoding];
    NSMutableURLRequest *req=[[NSMutableURLRequest alloc]initWithURL:url];

    NSString *authtoken=[NSString stringWithFormat:@"ios %@",[_DicData valueForKey:@"authToken"]];
    [req setValue:authtoken forHTTPHeaderField:@"Authorization"];

    [req setHTTPMethod:@"POST"];
    [req setHTTPBody:postData];
    NSHTTPURLResponse *urlResponse = nil;
    NSError *err = [[NSError alloc] init];
    NSData *responseData = [NSURLConnection sendSynchronousRequest:req returningResponse:&urlResponse error:&err];
    NSLog(@"%@",[[NSString alloc]initWithData:responseData encoding:NSUTF8StringEncoding]);

当我从我身边转换图像时，我得到了总字符= 133624和总字数= 0 但是当服务器转换得到它总字符= 133624和总字数= 2891 帮助我！

.net

中图像转换器的后端代码

public UserViewModel UpdateUserProfiledata（UserViewModel userupdate） { UserViewModel model = new UserViewModel（）; if（userupdate！= null＆amp;＆amp; userupdate.UserId＆gt; 0） { var getuser = _unitOfWork.UserRepository.GetMany（x =＆gt; x.UserId == userupdate.UserId）.ToList（）; if（getuser.Count（）＆gt; 0） { foreach（getuser中的var项） { item.UserName = userupdate.UserName; item.Email = userupdate.Email; item.MobileNo = userupdate.MobileNo; if（！string.IsNullOrEmpty（userupdate.Profiledata）） { var img = GetBytes（userupdate.Profiledata）; item.ProfilePhoto = img; } model.Profiledata = userupdate.Profiledata.Trim（）; _unitOfWork.UserRepository.Update（项目）; _unitOfWork.Save（）; 回归模型; } } } 回归模型; } static byte [] GetBytes（string str） { byte [] bytes = new byte [str.Length * sizeof（char）]; System.Buffer.BlockCopy（str.ToCharArray（），0，bytes，0，bytes.Length）; 返回字节; }

Answer 1

NSData *dataImage=UIImageJPEGRepresentation(yourImage, 1);
NSString *base64String = [self base64forData:dataImage];

将此base64String传递给您的请求中的服务器。

尝试使用base64编码：

- (NSString*)base64forData:(NSData*)theData
{
    const uint8_t* input = (const uint8_t*)[theData bytes];
    NSInteger length = [theData length];

    static char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

    NSMutableData* data = [NSMutableData dataWithLength:((length + 2) / 3) * 4];
    uint8_t* output = (uint8_t*)data.mutableBytes;

    NSInteger i;
    for (i=0; i < length; i += 3) {
        NSInteger value = 0;
        NSInteger j;
        for (j = i; j < (i + 3); j++) {
            value <<= 8;

            if (j < length) {
                value |= (0xFF & input[j]);
            }
        }

        NSInteger theIndex = (i / 3) * 4;
        output[theIndex + 0] =                    table[(value >> 18) & 0x3F];
        output[theIndex + 1] =                    table[(value >> 12) & 0x3F];
        output[theIndex + 2] = (i + 1) < length ? table[(value >> 6)  & 0x3F] : '=';
        output[theIndex + 3] = (i + 2) < length ? table[(value >> 0)  & 0x3F] : '=';
    }

    return [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding] ;
}

上传图片时从服务器获取损坏的数据

1 个答案: