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ColinChang.OssHelper 1.2.8

OssHelper

Oss Helper for .Net Core, which provides STS, Policy Authentication, and common callback functions.

Functions

/// <summary>
/// 阿里云OSS STS授权
/// </summary>
/// <returns></returns>
Task<AssumeRoleResponse.AssumeRole_Credentials> GetStsAsync();

/// <summary>
/// 阿里云OSS Policy授权
/// </summary>
/// <returns></returns>
Task<dynamic> GetPolicyAsync(int category);

/// <summary>
/// OSS 通用回调
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
Task<OssObject> CallbackAsync(HttpRequest request);

/// <summary>
/// 列举文件
/// </summary>
/// <param name="prefix">限定返回文件的Key必须以prefix作为前缀。如果把prefix设为某个文件夹名，则列举以此prefix开头的文件，即该文件夹下递归的所有文件和子文件夹。如果把prefix设为某个文件夹名，则列举以此prefix开头的文件，即该文件夹下递归的所有文件和子文件夹。</param>
/// <param name="marker">指定List操作需要从此文件开始</param>
/// <param name="maxKeys">指定返回Object的最大数。</param>
/// <param name="delimiter">对Object名字进行分组的字符。所有Object名字包含指定的前缀，第一次出现delimiter字符之间的Object作为一组元素</param>
/// <returns></returns>
Task<ObjectListing> ListObjectsAsync(string prefix = null, string marker = null,
 int? maxKeys = null, string delimiter = null);

/// <summary>
/// 流式下载(如果要下载的文件太大，或者一次性下载耗时太长，您可以通过流式下载，一次处理部分内容，直到完成文件的下载)
/// </summary>
/// <param name="objectName"></param>
/// <param name="filename">本地文件存储</param>
/// <returns></returns>
Task DownloadAsync(string objectName, string filename);

/// <summary>
/// 流式下载(如果要下载的文件太大，或者一次性下载耗时太长，您可以通过流式下载，一次处理部分内容，直到完成文件的下载)
/// </summary>
/// <param name="objectName"></param>
/// <returns></returns>
Task<Stream> DownloadAsync(string objectName);

/// <summary>
/// 上传对象
/// </summary>
/// <param name="filename">文件名</param>
/// <param name="objectType">对象类型. 0:Photo, 1:Video, 2:Application, 3:Other</param>
/// <param name="data">上传内容</param>
/// <returns></returns>
Task<PutObjectResult> UploadAsync(string filename, int objectType, byte[] data);

/// <summary>
/// 删除对象
/// </summary>
/// <param name="objectName"></param>
/// <returns></returns>
Task<DeleteObjectResult> DeleteObjectAsync(string objectName);

/// <summary>
/// 删除对象
/// </summary>
/// <param name="objectNames"></param>
/// <returns></returns>
Task<DeleteObjectsResult> DeleteObjectsAsync(IList<string> objectNames);

Sample

we just verify the mime type and size of the uploaded object in the Callback function. about how to use this, please check the Sample project.

be sure you've set your Access information in appsettings.json before running the sample.

Reference

• 服务端签名直传并设置上传回调
• 快速搭建移动应用上传回调服务
• 流式下载