MCP Server开发并使用自定义天气查询工具查询城市天气
1.本地安装node.js环境2.本地创建mcp文件夹，搭建mcp环境在文件夹下cmd执行npm init -y初始化npm项目3.创建weather-server.js文件，代码如下4.服务启动5.添加本地MCP服务配置，绑定本地地址6.配置clineAct Mode选择Qwen 模型7.验证查询北京今天天气查询武汉今天天气
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1.本地安装node.js环境
2.本地创建mcp文件夹，搭建mcp环境
在文件夹下cmd执行npm init -y初始化npm项目
3.创建weather-server.js文件，代码如下
// weather-server.js
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import fetch from "node-fetch";
import { z } from "zod";
// 创建MCP服务器
const server = new McpServer({
name: "weather-mcp",
version: "1.0.0"
});
// 城市ID映射表（部分常用城市）
const CITY_MAP = {
"北京": "101010100",
"上海": "101020100",
"武汉": "101200101",
// 可以按需添加更多城市
};
// 注册城市天气查询工具
server.tool(
"query_weather",
{
city: z.string().describe("要查询天气的城市名称，如北京、上海、广州等")
},
async ({ city }) => {
try {
let cityId = CITY_MAP[city];
// 如果城市不在映射表中，返回提示信息
if (!cityId) {
return {
content: [{
type: "text",
text: `暂不支持查询"${city}"的天气信息。目前支持的城市有：${Object.keys(CITY_MAP).join("、")}`
}]
};
}
// 构建魅族天气API URL
const url = `http://aider.meizu.com/app/weather/listWeather?cityIds=${cityId}`;
// 发送请求获取天气数据
const response = await fetch(url);
if (!response.ok) {
throw new Error(`天气API返回错误: ${response.status} ${response.statusText}`);
}
const data = await response.json();
// 检查API返回状态
if (data.code !== "200" || !data.value || !data.value[0]) {
throw new Error(`获取天气数据失败: ${data.message || "未知错误"}`);
}
const weatherData = data.value[0];
// 获取实时天气
const realtime = weatherData.realtime;
// 获取今日天气
const today = weatherData.weathers.find(w => {
const today = new Date();
const dateStr = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, '0')}-${String(today.getDate()).padStart(2, '0')}`;
return w.date === dateStr;
}) || weatherData.weathers[0];
// 获取生活指数
const indexes = weatherData.indexes || [];
// 格式化天气信息
let result = `📍 ${weatherData.city}（${weatherData.provinceName}）实时天气\n`;
result += `🕒 ${realtime.time}\n\n`;
result += `🌡️ 当前温度: ${realtime.temp}°C (体感温度: ${realtime.sendibleTemp}°C)\n`;
result += `☁️ 天气状况: ${realtime.weather}\n`;
result += `💧 湿度: ${realtime.sD}%\n`;
result += `🌬️ 风向风力: ${realtime.wD} ${realtime.wS}\n\n`;
result += `📅 今日温度: ${today.temp_day_c}°C / ${today.temp_night_c}°C\n`;
result += `🌞 日出/日落: ${today.sun_rise_time} / ${today.sun_down_time}\n\n`;
// 添加空气质量信息（如果有）
if (weatherData.pm25) {
result += `🌫️ 空气质量: ${weatherData.pm25.quality} (AQI: ${weatherData.pm25.aqi})\n`;
result += `💨 PM2.5: ${weatherData.pm25.pm25}, PM10: ${weatherData.pm25.pm10}\n\n`;
}
// 添加生活指数
if (indexes.length > 0) {
result += `🔍 生活指数参考:\n`;
indexes.forEach(index => {
// 添加对应的emoji
let emoji = "ℹ️";
switch (index.abbreviation) {
case "ct": emoji = "👕"; break; // 穿衣
case "pp": emoji = "💄"; break; // 化妆
case "gm": emoji = "🤧"; break; // 感冒
case "xc": emoji = "🚗"; break; // 洗车
case "yd": emoji = "🏃"; break; // 运动
case "uv": emoji = "☀️"; break; // 紫外线
}
result += `${emoji} ${index.name}(${index.level}): ${index.content}\n`;
});
}
return {
content: [{ type: "text", text: result.trim() }]
};
} catch (error) {
console.error("查询天气时出错:", error);
return {
content: [{ type: "text", text: `查询天气时出错: ${error.message}` }],
isError: true
};
}
}
);
// 注册天气预报工具
server.tool(
"query_forecast",
{
city: z.string().describe("要查询天气预报的城市名称")
},
async ({ city }) => {
try {
let cityId = CITY_MAP[city];
// 如果城市不在映射表中，返回提示信息
if (!cityId) {
return {
content: [{
type: "text",
text: `暂不支持查询"${city}"的天气预报。目前支持的城市有：${Object.keys(CITY_MAP).join("、")}`
}]
};
}
// 构建魅族天气API URL
const url = `http://aider.meizu.com/app/weather/listWeather?cityIds=${cityId}`;
// 发送请求获取天气数据
const response = await fetch(url);
if (!response.ok) {
throw new Error(`天气API返回错误: ${response.status} ${response.statusText}`);
}
const data = await response.json();
// 检查API返回状态
if (data.code !== "200" || !data.value || !data.value[0]) {
throw new Error(`获取天气数据失败: ${data.message || "未知错误"}`);
}
const weatherData = data.value[0];
// 获取天气预报
const forecasts = weatherData.weathers || [];
// 按日期排序（确保顺序正确）
forecasts.sort((a, b) => {
const dateA = new Date(a.date);
const dateB = new Date(b.date);
return dateA - dateB;
});
// 排除过去的日期
const today = new Date();
today.setHours(0, 0, 0, 0);
// 过滤出今天及未来的天气预报
const futureForecasts = forecasts.filter(forecast => {
const forecastDate = new Date(forecast.date);
return forecastDate >= today;
});
// 格式化天气预报
let result = `📅 ${weatherData.city}未来天气预报:\n\n`;
futureForecasts.forEach((forecast, index) => {
const date = new Date(forecast.date);
const monthDay = `${date.getMonth() + 1}月${date.getDate()}日`;
// 添加天气图标
let weatherEmoji = "☁️";
if (forecast.weather.includes("晴")) weatherEmoji = "☀️";
else if (forecast.weather.includes("雨")) weatherEmoji = "🌧️";
else if (forecast.weather.includes("雪")) weatherEmoji = "❄️";
else if (forecast.weather.includes("雾")) weatherEmoji = "🌫️";
else if (forecast.weather.includes("雷")) weatherEmoji = "⛈️";
result += `${index === 0 ? "📆 今天" : `📆 ${monthDay} ${forecast.week}`}:\n`;
result += `${weatherEmoji} ${forecast.weather}\n`;
result += `🌡️ ${forecast.temp_day_c}°C / ${forecast.temp_night_c}°C\n`;
result += `🌞 ${forecast.sun_rise_time} - ${forecast.sun_down_time}\n\n`;
});
// 添加生活小贴士
const indexes = weatherData.indexes || [];
if (indexes.length > 0) {
const randomIndex = Math.floor(Math.random() * indexes.length);
result += `💡 今日小贴士: ${indexes[randomIndex].content}\n`;
}
return {
content: [{ type: "text", text: result.trim() }]
};
} catch (error) {
console.error("查询天气预报时出错:", error);
return {
content: [{ type: "text", text: `查询天气预报时出错: ${error.message}` }],
isError: true
};
}
}
);
// 注册精细天气预报工具
server.tool(
"query_hourly_forecast",
{
city: z.string().describe("要查询精细天气预报的城市名称")
},
async ({ city }) => {
try {
let cityId = CITY_MAP[city];
// 如果城市不在映射表中，返回提示信息
if (!cityId) {
return {
content: [{
type: "text",
text: `暂不支持查询"${city}"的精细天气预报。目前支持的城市有：${Object.keys(CITY_MAP).join("、")}`
}]
};
}
// 构建魅族天气API URL
const url = `http://aider.meizu.com/app/weather/listWeather?cityIds=${cityId}`;
// 发送请求获取天气数据
const response = await fetch(url);
if (!response.ok) {
throw new Error(`天气API返回错误: ${response.status} ${response.statusText}`);
}
const data = await response.json();
// 检查API返回状态
if (data.code !== "200" || !data.value || !data.value[0]) {
throw new Error(`获取天气数据失败: ${data.message || "未知错误"}`);
}
const weatherData = data.value[0];
// 获取精细天气预报
const hourlyForecasts = weatherData.weatherDetailsInfo?.weather3HoursDetailsInfos || [];
if (hourlyForecasts.length === 0) {
return {
content: [{ type: "text", text: `暂无${city}未来几小时的精细天气预报数据` }]
};
}
// 格式化精细天气预报
let result = `⏱️ ${weatherData.city}未来逐3小时天气预报:\n\n`;
hourlyForecasts.forEach(forecast => {
const startTime = new Date(forecast.startTime);
const endTime = new Date(forecast.endTime);
const startHour = startTime.getHours();
const endHour = endTime.getHours();
// 添加天气图标
let weatherEmoji = "☁️";
if (forecast.weather.includes("晴")) weatherEmoji = "☀️";
else if (forecast.weather.includes("雨")) weatherEmoji = "🌧️";
else if (forecast.weather.includes("雪")) weatherEmoji = "❄️";
else if (forecast.weather.includes("雾")) weatherEmoji = "🌫️";
else if (forecast.weather.includes("雷")) weatherEmoji = "⛈️";
result += `🕒 ${startHour}:00-${endHour}:00:\n`;
result += `${weatherEmoji} ${forecast.weather}\n`;
result += `🌡️ ${forecast.lowerestTemperature}°C - ${forecast.highestTemperature}°C\n`;
// 添加降水信息（如果有）
if (forecast.precipitation && forecast.precipitation !== "0") {
result += `💧 降水量: ${forecast.precipitation}mm\n`;
}
result += `\n`;
});
return {
content: [{ type: "text", text: result.trim() }]
};
} catch (error) {
console.error("查询精细天气预报时出错:", error);
return {
content: [{ type: "text", text: `查询精细天气预报时出错: ${error.message}` }],
isError: true
};
}
}
);
// 启动服务器
async function main() {
try {
// 日志服务器启动信息
console.log("启动天气查询MCP服务器...");
// 使用标准输入/输出作为传输方式
const transport = new StdioServerTransport();
await server.connect(transport);
console.log("MCP服务器已启动并等待连接");
} catch (error) {
console.error("启动服务器时出错:", error);
process.exit(1);
}
}
main();
4.服务启动
5.添加本地MCP服务配置，绑定本地地址
6.配置cline
Act Mode选择Qwen 模型
7.验证
查询北京今天天气
查询武汉今天天气
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