mcp-server-dameng

mcp-server-dameng

MCP server enabling AI assistants to connect and query Dameng DM8 databases via JDBC. Supports SQL queries, listing tables, and describing schemas.

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README

mcp-server-dameng

达梦数据库 MCP Server — 通过 Model Context Protocol (MCP) 让 AI 助手(Claude、Trae、Cursor 等)直接连接和查询达梦 DM8 数据库。

功能

  • query_dameng — 执行 SQL 查询(SELECT/DML),返回结构化结果
  • list_tables — 列出数据库中所有用户表
  • describe_table — 查看指定表的列信息(类型、可空、默认值、注释)

前置条件

  1. Node.js >= 18
  2. Java 8+(JDK 或 JRE)— 用于 JDBC 桥接
  3. 达梦 JDBC 驱动 — DmJdbcDriver18.jar

安装

方式一:npx 直接运行(推荐)

# 首次运行会自动下载 npm 包
npx -y mcp-server-dameng@latest

方式二:全局安装

npm install -g mcp-server-dameng@latest
mcp-server-dameng

方式三:项目内安装

npm install mcp-server-dameng@latest
npx mcp-server-dameng@latest

配置 JDBC 驱动

由于达梦 JDBC 驱动(DmJdbcDriver18.jar)是专有软件,无法通过 npm 自动分发,需要手动配置。

方式 A:通过环境变量指定路径

# 设置驱动路径环境变量
export DAMENG_DRIVER_PATH=/path/to/DmJdbcDriver18.jar

方式 B:放置到 lib 目录

将 DmJdbcDriver18.jar 复制到包目录下的 lib/ 文件夹中:

# 全局安装时
cp DmJdbcDriver18.jar $(npm root -g)/mcp-server-dameng/lib/

# 项目内安装时
cp DmJdbcDriver18.jar node_modules/mcp-server-dameng/lib/

方式 C:运行 setup 命令获取帮助

npx mcp-server-dameng@latest setup

环境变量配置

必需

变量 说明 示例
DAMENG_URL 完整 JDBC 连接 URL jdbc:dm://localhost:5236
DAMENG_USER 数据库用户名 your_username
DAMENG_PASSWORD 数据库密码 your_password

或者使用拆分方式(替代 DAMENG_URL):

变量 说明 默认值
DAMENG_HOST 数据库主机地址 localhost
DAMENG_PORT 数据库端口 5236

可选

变量 说明
DAMENG_SCHEMA 默认模式名(连接后自动设置)
DAMENG_DRIVER_PATH JDBC 驱动 JAR 文件路径

在 AI 工具中配置

Trae / Claude Desktop / Cursor

在 MCP 配置文件(mcp.json)中添加:

{
  "mcpServers": {
    "dameng": {
      "command": "npx",
      "args": ["-y", "mcp-server-dameng@latest"],
      "env": {
        "DAMENG_URL": "jdbc:dm://your-host:5236",
        "DAMENG_SCHEMA": "YOUR_SCHEMA",
        "DAMENG_USER": "your_username",
        "DAMENG_PASSWORD": "your_password",
        "DAMENG_DRIVER_PATH": "D:\\path\\to\\DmJdbcDriver18.jar"
      }
    }
  }
}

开发

# 克隆仓库
git clone https://github.com/SpringDamon/mcp-server-dameng.git
cd mcp-server-dameng

# 安装依赖
npm install

# 放置 JDBC 驱动
# 将 DmJdbcDriver18.jar 复制到 lib/ 目录

# 编译 Java 桥接类
npm run compile:java

# 编译 TypeScript
npm run build

# 开发模式(热重载)
npm run dev

项目结构

mcp-server-dameng/
├── src/
│   ├── index.ts              # MCP Server 入口
│   ├── lib/
│   │   └── java-bridge.ts    # Java JDBC 桥接
│   └── tools/
│       ├── query.ts          # query_dameng 工具
│       ├── tables.ts         # list_tables 工具
│       └── schema.ts         # describe_table 工具
├── java/
│   └── DamengJdbcBridge.java # Java JDBC 桥接实现
├── lib/                      # JDBC 驱动目录(需手动放置)
├── scripts/
│   ├── setup.js              # 环境配置工具
│   └── postinstall.js        # 安装后检查
├── dist/                     # 编译输出
└── package.json

许可证

MIT

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