当我使用自托管主机时，如何获取HttpRequestContext？

import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletContext;
import com.tencent.cloud.HttpRequestContext;

public class MyServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) {
        ServletContext servletContext = request.getServletContext();
        HttpRequestContext httpRequestContext = (HttpRequestContext) servletContext.getAttribute("httpRequestContext");
        // 使用HttpRequestContext对象进行操作
    }
}

from flask import Flask, request
from tencent.cloud import HttpRequestContext

app = Flask(__name__)

@app.route('/')
def index():
    httpRequestContext = request.httpRequestContext
    # 使用HttpRequestContext对象进行操作
    return 'Hello World'

if __name__ == '__main__':
    app.run()

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

app.get('/', (req, res) => {
    const httpRequestContext = req.httpRequestContext;
    // 使用HttpRequestContext对象进行操作
    res.send('Hello World');
});

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});