> ## 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.

# S3FileLoader 集成

> 使用 LangChain JavaScript 集成 S3FileLoader document loader。

<Tip>
  **兼容性**

  Only available on Node.js.
</Tip>

This covers how to load document objects from an s3 file object.

## 设置

To run this index 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 AWS SDK:

```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
npm install @langchain/community @langchain/core @aws-sdk/client-s3
```

## 用法

Once Unstructured is configured, you can use the S3 loader to load files and then convert them into a Document.

You can optionally provide a s3Config parameter to specify your bucket region, access key, and secret access key. If these are not provided, you will need to have them in your environment (e.g., by running `aws configure`).

```typescript theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
import { S3Loader } from "@langchain/community/document_loaders/web/s3";

const loader = new S3Loader({
  bucket: "my-document-bucket-123",
  key: "AccountingOverview.pdf",
  s3Config: {
    region: "us-east-1",
    credentials: {
      accessKeyId: "AKIAIOSFODNN7EXAMPLE",
      secretAccessKey: "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY",
    },
  },
  unstructuredAPIURL: "http://localhost:8000/general/v0/general",
  unstructuredAPIKey: "", // this will be soon required
});

const docs = await loader.load();

console.log(docs);
```

***

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