Interface BlobSource
透過集合功能整理內容
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BlobSource
可將資料匯出為 Blob 的物件介面。
實作類別
內容詳盡的說明文件
getAs(contentType)
將此物件內的資料傳回為轉換為指定內容類型的 Blob。這個方法會在檔案名稱中加入適當的副檔名，例如「myfile.pdf」。不過，這會假設檔案名稱中最後一個句點 (如有) 後面的部分是應取代的現有副檔名。因此，「ShoppingList.12.25.2014」會變成「ShoppingList.12.25.pdf」。
如要查看轉換的每日配額，請參閱「Google 服務的配額」。新建立的 Google Workspace 網域可能會暫時受到較嚴格的配額限制。
參數
| 名稱 | 類型 | 說明 |
contentType | String | 要轉換的 MIME 類型。對於大多數 Blob 而言，'application/pdf' 是唯一有效的選項。如果是 BMP、GIF、JPEG 或 PNG 格式的圖片，'image/bmp'、'image/gif'、'image/jpeg' 或 'image/png' 皆可用。如果是 Google 文件，'text/markdown' 也是有效的。 |
回攻員
Blob：資料為 Blob。
getBlob()
將此物件內的資料以 blob 格式傳回。
回攻員
Blob：資料為 Blob。
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上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003e\u003ccode\u003eBlobSource\u003c/code\u003e is an interface allowing objects to export their data as a Blob.\u003c/p\u003e\n"],["\u003cp\u003eIt offers two primary methods: \u003ccode\u003egetAs()\u003c/code\u003e to retrieve data as a Blob with a specific content type and \u003ccode\u003egetBlob()\u003c/code\u003e for getting data as a raw Blob.\u003c/p\u003e\n"],["\u003cp\u003eVarious Apps Script objects, including Documents, Spreadsheets, and Images, implement this interface.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003egetAs()\u003c/code\u003e can convert data to formats like PDF, common image types, and Markdown for Google Docs, but is subject to usage quotas.\u003c/p\u003e\n"]]],[],null,["# Interface BlobSource\n\nBlobSource\n\nInterface for objects that can export their data as a [Blob](/apps-script/reference/base/blob).\n\n### Implementing classes\n\n| Name | Brief description |\n|------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Blob](/apps-script/reference/base/blob) | A data interchange object for Apps Script services. |\n| [Chart](../charts/chart.html) | A Chart object, which can be converted to a static image. |\n| [Document](../document/document.html) | A document, containing one or more [Tab](../document/tab.html) objects, each of which contains rich text and elements such as tables and lists. |\n| [EmbeddedChart](../spreadsheet/embedded-chart.html) | Represents a chart that has been embedded into a spreadsheet. |\n| [File](../drive/file.html) | A file in Google Drive. |\n| [GmailAttachment](../gmail/gmail-attachment.html) | An attachment from Gmail. |\n| [HTTPResponse](../url-fetch/http-response.html) | This class allows users to access specific information on HTTP responses. |\n| [HtmlOutput](../html/html-output.html) | An `Html``Output` object that can be served from a script. |\n| [Image](../slides/image.html) | A [PageElement](../slides/page-element.html) representing an image. |\n| [InlineImage](../document/inline-image.html) | An element representing an embedded image. |\n| [JdbcBlob](../jdbc/jdbc-blob.html) | A JDBC `Blob`. |\n| [JdbcClob](../jdbc/jdbc-clob.html) | A JDBC `Clob`. |\n| [PictureFill](../slides/picture-fill.html) | A fill that renders an image that's stretched to the dimensions of its container. |\n| [PositionedImage](../document/positioned-image.html) | Fixed position image anchored to a [Paragraph](../document/paragraph.html). |\n| [Spreadsheet](../spreadsheet/spreadsheet.html) | Access and modify Google Sheets files. |\n| [StaticMap](../maps/static-map.html) | Allows for the creation and decoration of static map images. |\n\n### Methods\n\n| Method | Return type | Brief description |\n|--------------------------------------|------------------------------------------|---------------------------------------------------------------------------------------|\n| [getAs(contentType)](#getAs(String)) | [Blob](/apps-script/reference/base/blob) | Return the data inside this object as a blob converted to the specified content type. |\n| [getBlob()](#getBlob()) | [Blob](/apps-script/reference/base/blob) | Return the data inside this object as a blob. |\n\nDetailed documentation\n----------------------\n\n### `get``As(contentType)`\n\nReturn the data inside this object as a blob converted to the specified content type. This\nmethod adds the appropriate extension to the filename---for example, \"myfile.pdf\". However, it\nassumes that the part of the filename that follows the last period (if any) is an existing\nextension that should be replaced. Consequently, \"ShoppingList.12.25.2014\" becomes\n\"ShoppingList.12.25.pdf\".\n\nTo view the daily quotas for conversions, see [Quotas for Google\nServices](https://developers.google.com/apps-script/guides/services/quotas). Newly created Google Workspace domains might be temporarily subject to stricter\nquotas.\n\n#### Parameters\n\n| Name | Type | Description |\n|-----------------|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `content``Type` | `String` | The MIME type to convert to. For most blobs, `'application/pdf'` is the only valid option. For images in BMP, GIF, JPEG, or PNG format, any of `'image/bmp'`, `'image/gif'`, `'image/jpeg'`, or `'image/png'` are also valid. For a Google Docs document, `'text/markdown'` is also valid. |\n\n#### Return\n\n\n[Blob](/apps-script/reference/base/blob) --- The data as a blob.\n\n*** ** * ** ***\n\n### `get``Blob()`\n\nReturn the data inside this object as a blob.\n\n#### Return\n\n\n[Blob](/apps-script/reference/base/blob) --- The data as a blob."]]
