Language: 中文简体 | English

flutter_oss_aliyun

一个访问阿里云oss并且支持STS临时访问凭证访问OSS的flutter库,基本上涵盖阿里云oss sdk的所有功能。⭐

flutter pub: https://pub.dev/packages/flutter_oss_aliyun

oss sts document: https://help.aliyun.com/document_detail/100624.html

🐱 功能

  • x 上传文件
  • x 下载文件
  • x 下载并保存文件
  • x 删除文件
  • x 多文件上传
  • x 多文件删除
  • x 上传文件的进度回调函数
  • x 下载文件的进度回调函数
  • x 获取签名的文件url
  • x 获取多个签名的文件url
  • x 列举所有的bucket
  • x 列举bucket中所有文件
  • x 获取bucket信息
  • x 获取bucket的储容量以及文件数量
  • x 上传本地文件
  • x 批量上传本地文件

🎨 使用

添加依赖

dependencies:
  flutter_oss_aliyun: ^4.1.7

1. 初始化oss client, 这里我们提供两种方式

提供sts server地址,需要后端添加这个api

Client.init(
    stsUrl: "server url get sts token",
    ossEndpoint: "oss-cn-beijing.aliyuncs.com",
    bucketName: "bucket name",
);

后端api至少需要返回以下数据:

{
  "AccessKeyId": "AccessKeyId",
  "AccessKeySecret": "AccessKeySecret",
  "SecurityToken": "SecurityToken",
  "Expiration": "2022-03-22T11:33:06Z"
}

当然你可以自定义使用其他的方式返回以下的json数据.

Client.init(
    ossEndpoint: "oss-cn-beijing.aliyuncs.com",
    bucketName: "bucketName",
    tokenGetter: _tokenGetterMethod
);

String _tokenGetterMethod() async {
  return '''{
        "AccessKeyId": "access id",
        "AccessKeySecret": "AccessKeySecret",
        "SecurityToken": "security token",
        "Expiration": "2022-03-22T11:33:06Z"
    }''';
}

2. 上传文件附带进度回调

final bytes = "file bytes".codeUnits;

await Client().putObject(
  bytes,
  "test.txt",
  onSendProgress: (count, total) {
    debugPrint("sent = $count, total = $total");
  },
  onReceiveProgress: (count, total) {
    debugPrint("received = $count, total = $total");
  }
);

3. 下载文件附带进度回调

await Client().getObject(
  "test.txt",
  onReceiveProgress: (count, total) {
    debugPrint("received = $count, total = $total");
  },
);

4. 下载并保存文件附带进度回调

await Client().downloadObject(
  "test.txt",
  "./example/test.txt",
  onReceiveProgress: (count, total) {
    debugPrint("received = $count, total = $total");
  },
);

5. 删除文件

await Client().deleteObject("test.txt");

6. 批量上传文件

await Client().putObjects([
  AssetEntity(
    filename: "filename1.txt",
    bytes: "files1".codeUnits,
    onSendProgress: (count, total) {
      debugPrint("sent = $count, total = $total");
    },
    onReceiveProgress: (count, total) {
      debugPrint("received = $count, total = $total");
    },
  ),
  AssetEntity(filename: "filename2.txt", bytes: "files2".codeUnits),
]);

7. 批量删除文件

await Client().deleteObjects(["filename1.txt", "filename2.txt"]);

8. 获取已签名的文件url,这个url可以直接在浏览器访问

需要注意的是:这个操作并不安全,因为url包含security-token信息,即使过期时间比较短

final String url = await Client().getSignedUrl("filename1.txt");

9. 获取多个已签名的文件url

需要注意的是:这个操作并不安全,因为url包含security-token信息,即使过期时间比较短

final Map<String, String> result = await Client().getSignedUrls(["test.txt", "filename1.txt"]);

10. 列举所有的存储空间

列举请求者拥有的所有存储空间(Bucket)。您还可以通过设置prefix、marker或者max-keys参数列举满足指定条件的存储空间。参考:https://help.aliyun.com/document_detail/31957.html

final Response<dynamic> resp = await Client().listBuckets({"max-keys": 2});

11. 列举存储空间中所有文件

接口用于列举存储空间(Bucket)中所有文件(Object)的信息。请求参数和返回结果,请参考: https://help.aliyun.com/document_detail/187544.html

final Response<dynamic> resp = await Client().listFiles({});

12. 获取bucket信息

查看存储空间(Bucket)的相关信息。返回结果请参考: https://help.aliyun.com/document_detail/31968.html

final Response<dynamic> resp = await Client().getBucketInfo();

13. 获取bucket的储容量以及文件数量

获取指定存储空间(Bucket)的存储容量以及文件(Object)数量。返回结果请参考: https://help.aliyun.com/document_detail/426056.html

final Response<dynamic> resp = await Client().getBucketStat();

14. 上传本地文件

final Response<dynamic> resp = await Client().putObjectFile(File("/Users/aaa.pdf"));

15. 批量上传本地文件

final List<Response<dynamic>> resp = await Client().putObjectFiles(
  [
    AssetFileEntity(
      file: File("//Users/private.txt"),
      onSendProgress: (count, total) {
        print("1: send: count = $count, and total = $total");
      },
    ),
    AssetFileEntity(
      file: File("//Users/splash.png"),
      filename: "aaa.png",
      onSendProgress: (count, total) {
        print("2: send: count = $count, and total = $total");
      },
    ),
  ],
);

Drop a ⭐ if it is help to you.

Libraries

flutter_oss_aliyun
Flutter widgets that make it easy to access aliyun oss.