AF封装的关于一次请求上传多图到服务器！！！

方式一：图片封装在模型数组中

/**
 *  上传多图到服务器
 *
 *  @param URLString       请求地址
 *  @param parameters      请求的其他参数
 *  @param paramModelArray 图片模型数组
 *  @param success         成功回调
 *  @param failure         失败回调
 */
+ (void)Upload:(NSString *)URLString
    parameters:(id)parameters
uploadParamArray:(NSArray *)paramModelArray
       success:(void (^)(id responseObject))success
       failure:(void (^)(NSError *error))failure{

// 创建请求管理者
    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
    
    [mgr POST:URLString parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        // 上传的文件全部拼接到formData
        
        /**
         *  FileData:要上传的文件的二进制数据
         *  name:上传参数名称
         *  fileName：上传到服务器的文件名称
         *  mimeType：文件类型
         *  uploadParam:数据模型(NSObject)存有每个图片的二进制，上传服务器对应的Key参数，文件名字，文件类型
         */
        
        for (UploadParamModel *uploadParam in paramModelArray) {
            
               [formData appendPartWithFileData:uploadParam.data name:uploadParam.name fileName:uploadParam.fileName mimeType:uploadParam.mimeType];
        }
        
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        if (success) {
            success(responseObject);
        }
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        if (failure) {
            failure(error);
        }
    }];

}
方式二：图片不封装，直接是image数组

//.h

+ (void)Upload:(NSString *)URLString
    parameters:(id)parameters
   uploadParamArray:(NSArray *)paramModelArray
       success:(void (^)(id responseObject))success
       failure:(void (^)(NSError *error))failure;

//.m

+(void)startMultiPartUploadTaskWithURL:(NSString *)url
                           imagesArray:(NSArray *)images
                     parameterOfimages:(NSString *)parameter
                        parametersDict:(NSDictionary *)parameters
                      compressionRatio:(float)ratio
                          succeedBlock:(void (^)(id, id))succeedBlock
                           failedBlock:(void (^)(id, NSError *))failedBlock
                   uploadProgressBlock:(void (^)(float, long long, long long))uploadProgressBlock{
    
    if (images.count == 0) {
        NSLog(@"上传内容没有包含图片");
        return;
    }
    for (int i = 0; i < images.count; i++) {
        
        id image = images[i];
        
        if (![image isKindOfClass:[UIImage class]]) {
            NSLog(@"images中第%d个元素不是UIImage对象",i+1);
            return;
        }
    }
    
    // 创建请求管理者
    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
    
    AFHTTPRequestOperation *operation = [mgr POST:url parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        
        for (NSString *key in [parameters allKeys]) {
            NSString *value=[parameters objectForKey:key];
            DLog(@"Server Url \n %@?cmd=%@", url, value);
        }
        
        int i = 0;
        //根据当前系统时间生成图片名称
        NSDate *date = [NSDate date];
        NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
        [formatter setDateFormat:@"yyyy年MM月dd日"];
        NSString *dateString = [formatter stringFromDate:date];
        
        for (UIImage *image in images) {
            NSString *fileName = [NSString stringWithFormat:@"%@%d.png",dateString,i];
            NSData *imageData;
            if (ratio > 0.0f && ratio < 1.0f) {
                imageData = UIImageJPEGRepresentation(image, ratio);
            }else{
                imageData = UIImageJPEGRepresentation(image, 1.0f);
            }
            
            [formData appendPartWithFileData:imageData name:parameter fileName:fileName mimeType:@"image/jpg/png/jpeg"];
        }
        
        
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        succeedBlock(operation,responseObject);
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"%@",error);
        failedBlock(operation,error);
        
    }];
    
    [operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
        CGFloat percent = totalBytesWritten * 1.0 / totalBytesExpectedToWrite;
        uploadProgressBlock(percent,totalBytesWritten,totalBytesExpectedToWrite);
    }];
    
}