IOS开发教程之put上传文件的服务器的配置及实例分享

    [[NSOperationQueuemainQueue] addOperationWithBlock:^{
         self.progressView.progress = value;
    }];

    NSLog(@"下载进度；value = %.03lf",value);
}

-(void)URLSession:(NSURLSession *)session didBecomeInvalidWithError:(NSError *)error
{
    NSLog(@"上传失败");
}
//转换成Base64编码授权字符串
-(NSString *)authBase64:(NSString *)authStr
{

    //将字符串转换成二进制数局
    NSData *data = [authStr dataUsingEncoding:NSUTF8StringEncoding];
    return [data base64EncodedStringWithOptions:0];
}