HaHafeng
31d555f7bb
- Add platform infrastructure chapter to frontend-backend architecture design - Update system architecture document with 6 new infrastructure modules - Update AI onboarding guide with infrastructure overview - Link to backend/src/common/README.md for detailed usage guide Key Updates: - Storage service (LocalAdapter + OSSAdapter) - Logging system (Winston + JSON format) - Cache service (Memory + Redis) - Async job queue (Memory + Database) - Health check endpoints - Monitoring metrics - Database connection pool - Environment config management All modules support zero-code switching between local and cloud environments. Related: #Platform-Infrastructure
109 lines
2.3 KiB
Markdown
109 lines
2.3 KiB
Markdown
# 文档处理引擎
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> **能力定位：** 通用能力层
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> **复用率：** 86% (6个模块依赖)
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> **优先级：** P0
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> **状态：** ✅ 已实现（Python微服务）
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---
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## 📋 能力概述
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文档处理引擎是平台的核心基础能力，负责：
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- 多格式文档文本提取（PDF、Docx、Txt、Excel）
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- OCR处理
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- 表格提取
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- 语言检测
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- 质量评估
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---
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## 📊 依赖模块
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**6个模块依赖（86%复用率）：**
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1. **ASL** - AI智能文献（文献PDF提取）
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2. **PKB** - 个人知识库（知识库文档上传）
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3. **DC** - 数据清洗（Excel/Docx数据导入）
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4. **SSA** - 智能统计分析（数据导入）
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5. **ST** - 统计分析工具（数据导入）
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6. **RVW** - 稿件审查（稿件文档提取）
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---
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## 💡 核心功能
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### 1. PDF提取
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- **Nougat**：英文学术论文（高质量）
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- **PyMuPDF**：中文PDF + 兜底方案（快速）
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- **语言检测**：自动识别中英文
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- **质量评估**：提取质量评分
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### 2. Docx提取
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- **Mammoth**：转Markdown
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- **python-docx**：结构化读取
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### 3. Txt提取
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- **多编码支持**：UTF-8、GBK等
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- **chardet**：自动检测编码
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### 4. Excel处理
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- **openpyxl**：读取Excel
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- **pandas**：数据处理
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---
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## 🏗️ 技术架构
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**Python微服务（FastAPI）：**
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```
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extraction_service/
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├── main.py (509行) - FastAPI主服务
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├── services/
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│ ├── pdf_extractor.py (242行) - PDF提取总协调
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│ ├── pdf_processor.py (280行) - PyMuPDF实现
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│ ├── language_detector.py (120行) - 语言检测
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│ ├── nougat_extractor.py (242行) - Nougat实现
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│ ├── docx_extractor.py (253行) - Docx提取
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│ └── txt_extractor.py (316行) - Txt提取（多编码）
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└── requirements.txt
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```
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---
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## 📚 API端点
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```
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POST /api/extract/pdf - PDF文本提取
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POST /api/extract/docx - Docx文本提取
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POST /api/extract/txt - Txt文本提取
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POST /api/extract/excel - Excel表格提取
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GET /health - 健康检查
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```
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---
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## 🔗 相关文档
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- [通用能力层总览](../README.md)
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- [Python微服务代码](../../../extraction_service/)
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---
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**最后更新：** 2025-11-06
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**维护人：** 技术架构师
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