废话不多说直接上网络请求工具类的代码

网络请求工具类 头文件.h 文件中:

/**
 上传多张图片

 @param path 路径
 @param params 参数
 @param images 图片数组
 @param success success description
 @param failure failure description
 @param progress progress description
 */

+ (void)uploadMoreImagesWithPath:(NSString *)path
                          params:(NSDictionary *)params
                          images:(NSArray *)images
                         success:(HttpSuccessBlock)success
                         failure:(HttpFailureBlock)failure
                        progress:(HttpUploadProgressBlock)progress;

网络请求工具类 实现文件.m 文件中:

+ (void)uploadMoreImagesWithPath:(NSString *)path
                           params:(NSDictionary *)params
                           images:(NSArray *)images
                          success:(HttpSuccessBlock)success
                          failure:(HttpFailureBlock)failure
                         progress:(HttpUploadProgressBlock)progress {
    
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
    // ContentType设置
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/html",@"image/jpeg",@"image/png",@"application/octet-stream",@"text/json",nil];
    
    manager.requestSerializer= [AFHTTPRequestSerializer serializer];

    manager.responseSerializer= [AFHTTPResponseSerializer serializer];
    
    // 上传完整地址
    NSString * urlString = [URL_main stringByAppendingPathComponent:path];
    
    [manager POST:urlString parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        
        //把image  转为data , POST上传只能传data
        
        // 1) 取当前系统时间
        NSDate *date = [NSDate date];
        
        // 2) 使用日期格式化工具
        NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
        
        // 3) 指定日期格式
        [formatter setDateFormat:@"yyyyMMddHHmmss"];
        NSString *dateStr = [formatter stringFromDate:date];
        for (int i = 0; i < images.count; i++) {
            
            UIImage *image = images[i];
            NSData * pngImageData = UIImagePNGRepresentation(image);
            // 4) 使用系统时间生成一个文件名
            NSString *fileName = [NSString stringWithFormat:@"%@%d.png", dateStr,i + 1];
           [formData appendPartWithFileData:pngImageData name:@"file" fileName:NSStringFormat(@"%@gauge.png",fileName) mimeType:@"image/png"];
        }
        
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        // 上传进度
        progress(uploadProgress.fractionCompleted);
        
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
     
        NSLog(@"上传成功%@",responseObject);
        success(responseObject);
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"上传失败%@",error);
        failure(error);
    }];
}

上传单张图片原理同上,只需要将 .m 文件中的 for 循环改为单张的即可

NSData * pngImageData = UIImagePNGRepresentation(image);           
NSString *fileName = [NSString stringWithFormat:@"%@.png", dateStr];           
[formData appendPartWithFileData:pngImageData name:@"file" fileName:NSStringFormat(@"%@gauge.png",fileName) mimeType:@"image/png"];