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

# UnstructuredXMLLoader 集成

> 使用 LangChain Python 集成 UnstructuredXMLLoader 文档加载器。

本指南提供了快速入门 `UnstructuredXMLLoader` [文档加载器](/oss/python/integrations/document_loaders) 的概述。`UnstructuredXMLLoader` 用于加载 `XML` 文件。该加载器适用于 `.xml` 文件。页面内容将是从 XML 标签中提取的文本。

## 概述

### 集成详情

| 类                                                                                                                                | 包                                                                                   |  本地 | 可序列化 | [JS 支持](https://js.langchain.com/docs/integrations/document_loaders/file_loaders/unstructured/) |
| :------------------------------------------------------------------------------------------------------------------------------- | :---------------------------------------------------------------------------------- | :-: | :--: | :---------------------------------------------------------------------------------------------: |
| [`UnstructuredXMLLoader`](https://reference.langchain.com/python/langchain-community/document_loaders/xml/UnstructuredXMLLoader) | [`langchain_community`](https://reference.langchain.com/python/langchain-community) |  ✅  |   ❌  |                                                ✅                                                |

### 加载器特性

|            来源           | 文档延迟加载 | 原生异步支持 |
| :---------------------: | :----: | :----: |
| `UnstructuredXMLLoader` |    ✅   |    ❌   |

## 设置

要使用 UnstructuredXMLLoader 文档加载器，您需要安装 `langchain-community` 集成包。

### 凭证

使用 UnstructuredXMLLoader 无需凭证。

要启用模型调用的自动追踪，请设置您的 [LangSmith](/langsmith/home) API 密钥：

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
os.environ["LANGSMITH_API_KEY"] = getpass.getpass("输入您的 LangSmith API 密钥：")
os.environ["LANGSMITH_TRACING"] = "true"
```

### 安装

安装 **langchain\_community**。

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
pip install -qU langchain_community
```

## 初始化

现在我们可以实例化模型对象并加载文档：

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
from langchain_community.document_loaders import UnstructuredXMLLoader

loader = UnstructuredXMLLoader(
    "./example_data/factbook.xml",
)
```

## 加载

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
docs = loader.load()
docs[0]
```

```text theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
Document(metadata={'source': './example_data/factbook.xml'}, page_content='美国\n\n华盛顿特区\n\n乔·拜登\n\n棒球\n\n加拿大\n\n渥太华\n\n贾斯汀·特鲁多\n\n冰球\n\n法国\n\n巴黎\n\n埃马纽埃尔·马克龙\n\n足球\n\n特立尼达和多巴哥\n\n西班牙港\n\n基思·罗利\n\n田径')
```

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
print(docs[0].metadata)
```

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
{'source': './example_data/factbook.xml'}
```

## 延迟加载

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
page = []
for doc in loader.lazy_load():
    page.append(doc)
    if len(page) >= 10:
        # 执行一些分页操作，例如
        # index.upsert(page)

        page = []
```

***

## API 参考

有关 `UnstructuredXMLLoader` 所有功能和配置的详细文档，请访问 [API 参考](https://reference.langchain.com/python/langchain-community/document_loaders/xml/UnstructuredXMLLoader)

***

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