DirectoryLoader 集成

使用 LangChain JavaScript 集成 DirectoryLoader document loader。

Compatibility: Only available on Node.js.

This notebook provides a quick overview for getting started with DirectoryLoader document loaders. For detailed documentation of all DirectoryLoader features and configurations head to the API reference.

This example goes over how to load data from folders with multiple files. The second argument is a map of file extensions to loader factories. Each file will be passed to the matching loader, and the resulting documents will be concatenated together.

Example folder:

src/document_loaders/example_data/example/
├── example.json
├── example.jsonl
├── example.txt
└── example.csv

概述

集成详情

Class	Package	Compatibility	Local	PY support
DirectoryLoader	langchain	Node-only	✅	✅

设置

要访问 DirectoryLoader document loader，你需要install the langchain package.

安装

LangChain 的 DirectoryLoader 集成位于 langchain 包中：

npm

npm install langchain @langchain/core

实例化

Now we can instantiate our model object and load documents:

import { DirectoryLoader } from "@langchain/classic/document_loaders/fs/directory";
import {
  JSONLoader,
  JSONLinesLoader,
} from "@langchain/classic/document_loaders/fs/json";
import { TextLoader } from "@langchain/classic/document_loaders/fs/text";
import { CSVLoader } from "@langchain/community/document_loaders/fs/csv";

const loader = new DirectoryLoader(
  "../../../../../../examples/src/document_loaders/example_data",
  {
    ".json": (path) => new JSONLoader(path, "/texts"),
    ".jsonl": (path) => new JSONLinesLoader(path, "/html"),
    ".txt": (path) => new TextLoader(path),
    ".csv": (path) => new CSVLoader(path, "text"),
  }
);

Load

const docs = await loader.load()
// disable console.warn calls
console.warn = () => {}
docs[0]

Document {
  pageContent: 'Foo\nBar\nBaz\n\n',
  metadata: {
    source: '/Users/bracesproul/code/lang-chain-ai/langchainjs/examples/src/document_loaders/example_data/example.txt'
  },
  id: undefined
}

console.log(docs[0].metadata)

{
  source: '/Users/bracesproul/code/lang-chain-ai/langchainjs/examples/src/document_loaders/example_data/example.txt'
}

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API 参考

有关所有 DirectoryLoader 功能和配置的详细文档，请前往 API 参考。

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将这些文档连接到 Claude、VSCode 等工具，通过 MCP 获取实时答案。

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