> ## Documentation Index
> Fetch the complete documentation index at: https://nvd-54.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Google cloud storage 集成

> 使用 LangChain JavaScript 集成 Google cloud storage document loader。

<Tip>
  **兼容性**

  Only available on Node.js.
</Tip>

This covers how to load a Google Cloud Storage File into LangChain documents.

## 设置

To use this loader, you'll need to have Unstructured already set up and ready to use at an available URL endpoint. It can also be configured to run locally.

See the [Unstructured file loaders documentation](/oss/javascript/integrations/document_loaders/file_loaders/unstructured) for information on how to do that.

You'll also need to install the official Google Cloud Storage SDK:

```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
npm install @langchain/community @langchain/core @google-cloud/storage
```

## 用法

Once Unstructured is configured, you can use the Google Cloud Storage loader to load files and then convert them into a Document.

In addition, you can optionally provide a `storageOptions` parameter to specify not only your storage options but also other authentication ways if you don't want Application Default Credentials(ADC) as default manner.

```typescript theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
import { GoogleCloudStorageLoader } from "@langchain/community/document_loaders/web/google_cloud_storage";

const loader = new GoogleCloudStorageLoader({
  bucket: "my-bucket-123",
  file: "path/to/file.pdf",
  storageOptions: {
    keyFilename: "/path/to/keyfile.json",
  },
  unstructuredLoaderOptions: {
    apiUrl: "http://localhost:8000/general/v0/general",
    apiKey: "", // this will be soon required
  },
});

const docs = await loader.load();

console.log(docs);
```

***

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