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ExternalStorageDownload[location]

从指定的 location 下载内容.

ExternalStorageDownload[location,dest]

从指定的 location 将内容下载至本地的目标文件或目录 dest.

ExternalStorageDownload[locationdest]

从指定位置将内容下载至本地的目标文件或目录 dest.

ExternalStorageDownload[{location1,location2,…},dest]

从指定位置将内容下载至本地目标 dest.

ExternalStorageDownload[{location1,location2,…}dest]

从指定位置将内容下载至本地目标 dest.

ExternalStorageDownload[{location1dest1,location2dest2,…}]

从指定位置将内容下载至本地目标.

更多信息和选项
Details and Options Details and Options
范例  
基本范例  
范围  
单个文件  
多个文件  
选项  
ExternalStorageBase  
Amazon S3  
Dropbox  
IPFS  
属性和关系  
参见
相关指南
相关链接
历史
按以下格式引用：

ExternalStorageDownload

ExternalStorageDownload[location]

从指定的 location 下载内容.

ExternalStorageDownload[location,dest]

从指定的 location 将内容下载至本地的目标文件或目录 dest.

ExternalStorageDownload[locationdest]

从指定位置将内容下载至本地的目标文件或目录 dest.

ExternalStorageDownload[{location1,location2,…},dest]

从指定位置将内容下载至本地目标 dest.

ExternalStorageDownload[{location1,location2,…}dest]

从指定位置将内容下载至本地目标 dest.

ExternalStorageDownload[{location1dest1,location2dest2,…}]

从指定位置将内容下载至本地目标.

更多信息和选项

  • 默认外部存储由 $ExternalStorageBase 给出.
  • location 的可能的形式包括：
  • "CID"IPFS 内容标识符 (CID)
    "path"外部存储服务中的路径（如 Dropbox）
    "bucket/key"外部存储服务（如 Amazon S3）中的存储桶名称和密钥
    "bucket/prefix/"外部存储服务（如 Amazon S3）中的存储桶名称和前缀
    "uri"外部存储服务的 URI（如 Amazon S3 URI）
    ExternalStorageObject[…]外部存储对象
  • dest 的可能的形式包括：
  • "file"本地文件路径
    "directory"本地目录
    {"file1","file2",…}本地文件路径列表

范例

打开所有单元 关闭所有单元

基本范例  (4)

从 InterPlanetary 文件系统 (IPFS) 下载文件：

Wolfram Language code: file = ExternalStorageDownload[ExternalStorageObject["QmXpif6oKinoP8CwPMCJPqoJNwvEfzbH1cJg6yZkBLJwKu", Association["ExternalStorageBase" -> "IPFS", "FileHash" -> "c9ccd63d95043f5d639a76b932dba6c9"]]]

导入下载的内容：

Wolfram Language code: Import[file]

从 Dropbox 下载一个文件：

Wolfram Language code: file = ExternalStorageDownload["spikey.png", ExternalStorageBase -> "Dropbox"]

导入下载的内容：

Wolfram Language code: Import[file]

从 Amazon S3 存储桶下载一个文件：

Wolfram Language code: file = ExternalStorageDownload["wolfram-bucket/coneflower.jpg", ExternalStorageBase -> "AmazonS3"]

导入下载的内容：

Wolfram Language code: Import[file]

通过提供 ExternalStorageObject 从 Amazon S3 存储桶下载多个文件：

Wolfram Language code: files = ExternalStorageDownload[ExternalStorageObject[{"wolfram-bucket/coneflower.jpg", "wolfram-bucket/spikey2.png", "wolfram-bucket/turtle.jpg"}, Association["BucketName" -> "wolfram-bucket", "Path" -> {"coneflower.jpg", "spikey2.png", "turtle.jpg"}, "ExternalStorageBase" -> "AmazonS3"]], ExternalStorageBase -> "AmazonS3"]

导入下载的文件：

Wolfram Language code: Import /@ files

范围  (11)

单个文件  (7)

通过提供内容标识符 (CID) 从 InterPlanetary 文件系统 (IPFS) 下载文件：

Wolfram Language code: ExternalStorageDownload["Qmd1HkTU55zaCDnX2wbnVoq15aPHdutn8c3epuJFAt4dgf"]
Wolfram Language code: Import[%]

通过提供 ExternalStorageObject 从 InterPlanetary 文件系统 (IPFS) 下载文件：

Wolfram Language code: ExternalStorageDownload[ExternalStorageObject["Qmd1HkTU55zaCDnX2wbnVoq15aPHdutn8c3epuJFAt4dgf", Association["ExternalStorageBase" -> "IPFS", "FileHash" -> "38cb6f3cd68c6c723591a8a385732560"]]]

将文件上传至 Dropbox：

Wolfram Language code: eso = ExternalStorageUpload["ExampleData/spikey2.png", "NonExistentFolderX77/spikey.png", ExternalStorageBase -> "Dropbox"]
Wolfram Language code: eso["Path"]

通过提供路径从 Dropbox 下载文件：

Wolfram Language code: ExternalStorageDownload[eso["Path"], ExternalStorageBase -> "Dropbox"]
Wolfram Language code: Import[%]

从 InterPlanetary 文件系统 (IPFS) 将文件下载至特定的本地路径：

Wolfram Language code: ExternalStorageDownload[ExternalStorageObject["Qmd1HkTU55zaCDnX2wbnVoq15aPHdutn8c3epuJFAt4dgf", Association["ExternalStorageBase" -> "IPFS", "FileHash" -> "38cb6f3cd68c6c723591a8a385732560"]], "~/Downloads/Wolfram/Spikey.png"]
Wolfram Language code: Import[%]

从 Amazon S3 存储桶下载一个文件：

Wolfram Language code: ExternalStorageDownload["wolfram-bucket/coneflower.jpg", ExternalStorageBase -> "AmazonS3"]
Wolfram Language code: Import[%]

通过提供 ExternalStorageObject 从 Amazon S3 存储桶下载一个文件：

Wolfram Language code: ExternalStorageDownload[ExternalStorageObject["Choriza.jpg", Association["BucketName" -> "wolfram-bucket", "ExternalStorageBase" -> "AmazonS3", "Path" -> "Choriza.jpg"]]]
Wolfram Language code: Import[%]

从 Amazon S3 存储桶下载一个文件到特定的本地目标：

Wolfram Language code: ExternalStorageDownload[ExternalStorageObject["zip.jpeg", Association["BucketName" -> "wolfram-bucket", "ExternalStorageBase" -> "AmazonS3", "Path" -> "zip.jpeg"]], FileNameJoin[{$HomeDirectory, "zipDoggy.jpeg"}]]
Wolfram Language code: Import[%]

用语法 locationdest 给出同样的结果：

Wolfram Language code: ExternalStorageDownload[ExternalStorageObject["zip.jpeg", Association["BucketName" -> "wolfram-bucket", "ExternalStorageBase" -> "AmazonS3", "Path" -> "zip.jpeg"]] -> FileNameJoin[{$HomeDirectory, "zipDoggy.jpeg"}]]

多个文件  (4)

从 Amazon S3 存储桶下载多个文件：

Wolfram Language code: locations = Table[StringRiffle[{"wolfram-bucket", "jpgFiles", "image" <> ToString[i] <> ".jpg"}, "/"], {i, 1, 3}]
Wolfram Language code: files = ExternalStorageDownload[locations, ExternalStorageBase -> "AmazonS3"]
Wolfram Language code: Import /@ files

通过提供 ExternalStorageObject 从 Amazon S3 存储桶下载多个文件：

Wolfram Language code: files = ExternalStorageDownload[ExternalStorageObject[{"Cali.jpg", "Choriza2.jpg", "Choriza.jpg", "ThaiCali.jpg", "zip.jpeg"}, Association["BucketName" -> "wolfram-bucket", "ExternalStorageBase" -> "AmazonS3", "Path" -> {"Cali.jpg", "Choriza2.jpg", "Choriza.jpg", "ThaiCali.jpg", "zip.jpeg"}]]]
Wolfram Language code: Import /@ files

从 Amazon S3 存储桶下载多个文件到特定的本地目录：

Wolfram Language code: files = ExternalStorageDownload[ExternalStorageObject[{"wolfram-bucket/coneflower.jpg", "wolfram-bucket/spikey2.png", "wolfram-bucket/turtle.jpg"}, Association["BucketName" -> "wolfram-bucket", "Path" -> {"coneflower.jpg", "spikey2.png", "turtle.jpg"}, "ExternalStorageBase" -> "AmazonS3"]], $HomeDirectory]
Wolfram Language code: Import /@ files

从 Amazon S3 存储桶下载多个文件到特定的本地目标：

Wolfram Language code: destinations = Table[FileNameJoin[{$HomeDirectory, "image" <> ToString[i] <> ".jpg"}], {i, 1, 3}];
Wolfram Language code: ExternalStorageDownload[ExternalStorageObject[{"jpgFiles/image1.jpg", "jpgFiles/image2.jpg", "jpgFiles/image3.jpg"}, Association["BucketName" -> "wolfram-bucket", "ExternalStorageBase" -> "AmazonS3", "Path" -> {"jpgFiles/image1.jpg", "jpgFiles/image2.jpg", "jpgFiles/image3.jpg"}]], destinations, ExternalStorageBase -> "AmazonS3"]
Wolfram Language code: Import /@ %

第一个参数也可以是位置列表：

Wolfram Language code: locations = Table[StringRiffle[{"wolfram-bucket", "jpgFiles", "image" <> ToString[i] <> ".jpg"}, "/"], {i, 1, 3}]
Wolfram Language code: ExternalStorageDownload[locations, destinations, ExternalStorageBase -> "AmazonS3"]

用语法 locationdest 给出同样的结果：

Wolfram Language code: ExternalStorageDownload[locations -> destinations, ExternalStorageBase -> "AmazonS3"]

用规则列表 {location1dest1,location2dest2,…} 也可以：

Wolfram Language code: ExternalStorageDownload[MapThread[Rule, {locations, destinations}], ExternalStorageBase -> "AmazonS3"]

选项  (4)

ExternalStorageBase  (4)

Amazon S3  (2)

从 Amazon S3 存储桶下载一个文件：

Wolfram Language code: ExternalStorageDownload["wolfram-bucket/coneflower.jpg", ExternalStorageBase -> "AmazonS3"]

从 Amazon S3 存储桶下载多个文件：

Wolfram Language code: locations = Table[StringRiffle[{"wolfram-bucket", "jpgFiles", "image" <> ToString[i] <> ".jpg"}, "/"], {i, 1, 3}];
Wolfram Language code: ExternalStorageDownload[locations, ExternalStorageBase -> "AmazonS3"]

Dropbox  (1)

将文件上传至 Dropbox：

Wolfram Language code: eso = ExternalStorageUpload["ExampleData/spikey2.png", ExternalStorageBase -> "Dropbox"]
Wolfram Language code: eso["Path"]

从 Dropbox 下载文件：

Wolfram Language code: ExternalStorageDownload["spikey2.png", ExternalStorageBase -> "Dropbox"]
Wolfram Language code: Import[%]

IPFS  (1)

从 InterPlanetary 文件系统 (IPFS) 下载文件：

Wolfram Language code: ExternalStorageDownload["Qmd1HkTU55zaCDnX2wbnVoq15aPHdutn8c3epuJFAt4dgf", ExternalStorageBase -> "IPFS"]
Wolfram Language code: Import[%]

属性和关系  (1)

CopyFile 也支持将 ExternalStorageObject 作为文件指定，将其下载至本地路径：

Wolfram Language code: CopyFile[ExternalStorageObject["Qmd1HkTU55zaCDnX2wbnVoq15aPHdutn8c3epuJFAt4dgf", Association["ExternalStorageBase" -> "IPFS", "FileHash" -> "38cb6f3cd68c6c723591a8a385732560"]], "~/Downloads/Wolfram/Spikey.png"]
Wolfram Language code: Import[%]
Wolfram Research (2020)，ExternalStorageDownload，Wolfram 语言函数，https://reference.wolfram.com/language/ref/ExternalStorageDownload.html （更新于 2021 年）.

文本

Wolfram Research (2020)，ExternalStorageDownload，Wolfram 语言函数，https://reference.wolfram.com/language/ref/ExternalStorageDownload.html （更新于 2021 年）.

CMS

Wolfram 语言. 2020. "ExternalStorageDownload." Wolfram 语言与系统参考资料中心. Wolfram Research. 最新版本 2021. https://reference.wolfram.com/language/ref/ExternalStorageDownload.html.

APA

Wolfram 语言. (2020). ExternalStorageDownload. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/ExternalStorageDownload.html 年

BibTeX

@misc{reference.wolfram_2026_externalstoragedownload, author="Wolfram Research", title="{ExternalStorageDownload}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/ExternalStorageDownload.html}", note=[Accessed: 16-September-2026]}

BibLaTeX

@online{reference.wolfram_2026_externalstoragedownload, organization={Wolfram Research}, title={ExternalStorageDownload}, year={2021}, url={https://reference.wolfram.com/language/ref/ExternalStorageDownload.html}, note=[Accessed: 16-September-2026]}