AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];manager.requestSerializer.timeoutInterval = 20;manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/plain", @"multipart/form-data", @"application/json", @"text/html", @"image/jpeg", @"image/png", @"application/octet-stream", @"text/json", nil];[manager POST:[NSString stringWithFormat:@"%@%@",HostUrl,getInfoPhoto] parameters:parameterDict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {// formData: 专门用于拼接需要上传的数据,在此位置生成一个要上传的数据体// 这里的_photoArr是你存放图片的数组for (int i = 0; i < headImage.count; i++) {UIImage *image = headImage[i];NSData *imageData = UIImageJPEGRepresentation(image, 0.5);// 在网络开发中，上传文件时，是文件不允许被覆盖，文件重名// 要解决此问题，// 可以在上传时使用当前的系统事件作为文件名NSDateFormatter *formatter = [[NSDateFormatter alloc] init];// 设置时间格式[formatter setDateFormat:@"yyyyMMddHHmmss"];NSString *dateString = [formatter stringFromDate:[NSDate date]];NSString *fileName = [NSString  stringWithFormat:@"%@.jpg", dateString];/**该方法的参数1. appendPartWithFileData：要上传的照片[二进制流]2. name：对应网站上[upload.php中]处理文件的字段（比如upload）3. fileName：要保存在服务器上的文件名4. mimeType：上传的文件的类型*/[formData appendPartWithFileData:imageData name:@"upload" fileName:fileName mimeType:@"image/jpeg"]; //
            }} progress:^(NSProgress * _Nonnull uploadProgress) {//上传进度dispatch_sync(dispatch_get_main_queue(), ^{NSLog(@"progress is %@",uploadProgress);});} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {success(responseObject);} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {failure(error);}];

 // 上传多张图片for(NSInteger i = 0; i < headImage.count; i++){AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];manager.requestSerializer.timeoutInterval = 20;manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/plain", @"multipart/form-data", @"application/json", @"text/html", @"image/jpeg", @"image/png", @"application/octet-stream", @"text/json", nil];__block NSInteger blockI = i;[manager POST:[NSString stringWithFormat:@"%@%@",HostUrl,getInfoPhoto] parameters:parameterDict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {//取出单张图片二进制数据id obj = headImage[blockI];UIImage *image = nil;if ([obj isKindOfClass:[UIImage class]]) {image = (UIImage *)obj;}else{image = [UIImage imageWithContentsOfFile:obj];}if (image) {UIImage *image = headImage[i];NSData *imageData = UIImageJPEGRepresentation(image, 0.5);// 在网络开发中，上传文件时，是文件不允许被覆盖，文件重名// 要解决此问题，// 可以在上传时使用当前的系统事件作为文件名NSDateFormatter *formatter = [[NSDateFormatter alloc] init];// 设置时间格式[formatter setDateFormat:@"yyyyMMddHHmmss"];NSString *dateString = [formatter stringFromDate:[NSDate date]];NSString *fileName = [NSString  stringWithFormat:@"%@.jpg", dateString];/**该方法的参数1. appendPartWithFileData：要上传的照片[二进制流]2. name：对应网站上[upload.php中]处理文件的字段（比如upload）3. fileName：要保存在服务器上的文件名4. mimeType：上传的文件的类型*/[formData appendPartWithFileData:imageData name:@"upload" fileName:fileName mimeType:@"image/jpeg"]; //
}} progress:^(NSProgress * _Nonnull uploadProgress) {NSLog(@"progress is %@",uploadProgress);} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {success(responseObject);} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {failure(error);}];  }