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
添加依赖
dependencies:
flutter_oss_aliyun: ^6.4.2Client.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"
}Client.init(
ossEndpoint: "oss-cn-beijing.aliyuncs.com",
bucketName: "bucketName",
authGetter: _authGetter
);
Auth _authGetter() {
return Auth(
accessKey: "accessKey",
accessSecret: 'accessSecret',
expire: '2023-02-23T14:02:46Z',
secureToken: 'token',
);
}injectable: https://pub.dev/packages/injectable
@module
abstract class OssProvider {
@singleton
Client client() {
return Client.init(
stsUrl: Env.stsUrl,
ossEndpoint: Env.endpointUrl,
bucketName: Env.bucketName,
);
}
}你可以传入自定义的Dio
在init函数中，你可以传入dio，做到dio的定制化。比如日志或者其他的interceptors.
Client.init(
stsUrl: "server url get sts token",
ossEndpoint: "oss-cn-beijing.aliyuncs.com",
bucketName: "bucket name",
dio: Dio(BaseOptions(connectTimeout: 9000)),
);- 文件上传
- 追加文件上传
- 跨bucket文件复制
- 取消文件上传
- 批量文件上传
- 本地文件上传
- 批量本地文件上传
- 文件下载
- 查询文件是否存在
- 文件下载并保存
- 文件删除
- 批量文件删除
- 获取已签名的文件url
- 获取多个已签名的文件url
- 列举所有的存储空间
- 列举存储空间中所有文件
- 获取bucket信息
- 获取bucket的储容量以及文件数量
- 获取文件元信息
- regions的查询
- bucket acl的操作
- bucket policy的操作
关于callback的使用: https://help.aliyun.com/document_detail/31989.htm?spm=a2c4g.11186623.0.0.73a830ffn45LMY#reference-zkm-311-hgb
final bytes = "file bytes".codeUnits;
await Client().putObject(
bytes,
"test.txt",
option: PutRequestOption(
onSendProgress: (count, total) {
print("send: count = $count, and total = $total");
},
onReceiveProgress: (count, total) {
print("receive: count = $count, and total = $total");
},
override: false,
aclModel: AclMode.publicRead,
storageType: StorageType.ia,
headers: {"cache-control": "no-cache"},
callback: Callback(
callbackUrl: "callback url",
callbackBody: "{\"mimeType\":\${mimeType}, \"filepath\":\${object},\"size\":\${size},\"bucket\":\${bucket},\"phone\":\${x:phone}}",
callbackVar: {"x:phone": "android"},
calbackBodyType: CalbackBodyType.json,
),
),
);PutRequestOption 字段说明,字段皆为非必需
| Filed | Default value | Description |
|---|---|---|
| override | true | true: 允许覆盖同名Object false: 禁止覆盖同名Object |
| aclModel | inherited | 1. publicWrite: 任何人（包括匿名访问者）都可以对该Object进行读写操作 2. publicRead: 只有该Object的拥有者可以对该Object进行写操作，任何人（包括匿名访问者）都可以对该Object进行读操作 3. private: 只有Object的拥有者可以对该Object进行读写操作，其他人无法访问该Object 4. inherited: 该Object遵循Bucket的读写权限，即Bucket是什么权限，Object就是什么权限 参考文档: https://help.aliyun.com/document_detail/100676.htm?spm=a2c4g.11186623.0.0.56637952SnxOWV#concept-blw-yqm-2gb |
| storageType | Standard | 参考文档: https://help.aliyun.com/document_detail/51374.htm?spm=a2c4g.11186623.0.0.56632b55htpEQX#concept-fcn-3xt-tdb |
final Response<dynamic> resp = await Client().appendObject(
Uint8List.fromList(utf8.encode("Hello World")),
"test_append.txt",
);
final Response<dynamic> resp2 = await Client().appendObject(
position: int.parse(resp.headers["x-oss-next-append-position"]?[0]),
Uint8List.fromList(utf8.encode(", Fluter.")),
"test_append.txt",
);final Response<dynamic> resp = await Client().copyObject(
const CopyRequestOption(
sourceFileKey: 'test.csv',
targetFileKey: "test_copy.csv",
targetBucketName: "bucket_2"
),
);final CancelToken cancelToken = CancelToken();
final bytes = ("long long bytes" * 1000).codeUnits;
Client().putObject(
Uint8List.fromList(utf8.encode(string)),
"cancel_token_test.txt",
cancelToken: cancelToken,
option: PutRequestOption(
onSendProgress: (count, total) {
if (kDebugMode) {
print("send: count = $count, and total = $total");
}
if (count > 56) {
cancelToken.cancel("cancel the uploading.");
}
},
),
).then((response) {
// success
print("upload success = ${response.statusCode}");
}).catchError((err) {
if (CancelToken.isCancel(err)) {
print("error message = ${err.message}");
} else {
// handle other errors
}
});await Client().putObjects([
AssetEntity(
filename: "filename1.txt",
bytes: "files1".codeUnits,
option: PutRequestOption(
onSendProgress: (count, total) {
print("send: count = $count, and total = $total");
},
onReceiveProgress: (count, total) {
print("receive: count = $count, and total = $total");
},
aclModel: AclMode.private,
),
),
AssetEntity(filename: "filename2.txt", bytes: "files2".codeUnits),
]);final Response<dynamic> resp = await Client().putObjectFile(
"/Users/aaa.pdf",
fileKey: "aaa.png",
option: PutRequestOption(
onSendProgress: (count, total) {
print("send: count = $count, and total = $total");
},
onReceiveProgress: (count, total) {
print("receive: count = $count, and total = $total");
},
aclModel: AclMode.private,
callback: Callback(
callbackUrl: callbackUrl,
callbackBody:
"{\"mimeType\":\${mimeType}, \"filepath\":\${object},\"size\":\${size},\"bucket\":\${bucket},\"phone\":\${x:phone}}",
callbackVar: {"x:phone": "android"},
calbackBodyType: CalbackBodyType.json,
),
),
);final List<Response<dynamic>> resp = await Client().putObjectFiles(
[
AssetFileEntity(
filepath: "//Users/private.txt",
option: PutRequestOption(
onSendProgress: (count, total) {
print("send: count = $count, and total = $total");
},
onReceiveProgress: (count, total) {
print("receive: count = $count, and total = $total");
},
override: false,
aclModel: AclMode.private,
),
),
AssetFileEntity(
filepath: "//Users/splash.png",
filename: "aaa.png",
option: PutRequestOption(
onSendProgress: (count, total) {
print("send: count = $count, and total = $total");
},
onReceiveProgress: (count, total) {
print("receive: count = $count, and total = $total");
},
override: true,
),
),
],
);await Client().getObject(
"test.txt",
onReceiveProgress: (count, total) {
debugPrint("received = $count, total = $total");
},
);final bool isExisted = await Client().doesObjectExist(
"aaa.jpg",
);await Client().downloadObject(
"test.txt",
"./example/test.txt",
onReceiveProgress: (count, total) {
debugPrint("received = $count, total = $total");
},
);await Client().deleteObject("test.txt");await Client().deleteObjects(["filename1.txt", "filename2.txt"]);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. 这个url可以直接在浏览器访问
final String url = await Client().getSignedUrl(
"test.jpg",
params: {"x-oss-process": "image/resize,w_10/quality,q_90"},
);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"]);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});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({});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();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();final Response<dynamic> resp = await Client().getObjectMeta("huhx.csv");- 查询所有
final Response<dynamic> resp = await Client().getAllRegions();- 查询特定
final Response<dynamic> resp = await Client().getRegion("oss-ap-northeast-1");- 查询
final Response<dynamic> resp = await Client().getBucketAcl(
bucketName: "bucket-name",
);- 更新
final Response<dynamic> resp = await Client().putBucketAcl(
AciMode.publicRead,
bucketName: "bucket-name",
);- 查询
final Response<dynamic> resp = await Client().getBucketPolicy(
bucketName: "bucket-name",
);- 更新
final Response<dynamic> resp = await Client().putBucketPolicy(
{},
bucketName: "bucket-name",
);- 删除
final Response<dynamic> resp = await Client().deleteBucketPolicy(
bucketName: "bucket-name",
);
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