如何从中间件设置日志记录上下文？

const express = require('express');
const morgan = require('morgan');

const app = express();

// 设置日志记录中间件
app.use(morgan('combined'));

// 其他路由和中间件配置...

// 启动服务器
app.listen(3000, () => {
  console.log('Server started on port 3000');
});

const winston = require('winston');

// 创建日志记录器
const logger = winston.createLogger({
  transports: [
    new winston.transports.Console(),
    new winston.transports.File({ filename: 'logs.log' })
  ]
});

// 记录日志
logger.info('This is an informational log message');
logger.error('This is an error log message');