node.js Https请求传递数据

我的代码如下：

参考了网上大多说的是req.write(contents);我试了这样写没有效果

而是在url拼接?contents 来传递数据

import * as https from "https";
var querystring = require('querystring');

//传递到后台的数据
var data = "1";
var post_data = { classId: data };
var contents = querystring.stringify(post_data);

var options = {
    hostname: "www.baidu.com",
    port: 443,
    path: "/bfi-web/api/student/course/list_new?" + contents,
    method: "POST",
    rejectUnauthorized: false,
    headers: {
        Accept: "*/*",
        "Accept-Encoding": "utf-8",
        "Accept-Language": "zh-CN,zh;q=0.8",
        Connection: "keep-alive",
        Host: "www.eluzhu.com",
        token: token,
        version: "2.6",
        from: "IDE",
    },
};

var mData = '';
var req = https.request(options, function (res) {
    res.setEncoding('utf-8');
    res.on("data", function (d) {
        console.log('===================================data===========' + d);
        mData += d;
    });
    res.on("end", function () {
        var data = JSON.parse(mData);
        // console.log('===================================data===========' + mData);
        if (data.code == "000000") {
            MyTreeProvider.datas = data.data.list;
            MyTreeProvider.initMyTreeList();
        }
        else {
            vscode.window.showInformationMessage("请求失败：" + data.msg);
        }
    });
});
// req.write(contents);
req.on("error", function (e) {
    console.error("====================================================" + e);
});
req.end();

本文参考来自：https://www.imooc.com/qadetail/181878