node.js如何将远程的文件下载到本地、解压、读取

   //文件下载
var fs = require("fs");
var path = require("path");
var request = require("request");

//创建文件夹目录
var dirPath = path.join(__dirname, "file");
if (!fs.existsSync(dirPath)) {
    fs.mkdirSync(dirPath);
    console.log("文件夹创建成功");
} else {
    console.log("文件夹已存在");
}

//循环多线程下载
for (let i = 0; i < 1; i++) {
    let fileName = "apache-tomcat-8.5.38.zip" ;
    let url = "http://mirrors.shu.edu.cn/apache/tomcat/tomcat-8/v8.5.38/bin/" + fileName;
    let stream = fs.createWriteStream(path.join(dirPath, fileName));
    request(url).pipe(stream).on("close", function (err) {
        console.log("文件[" + fileName + "]下载完毕");
    });
}

//整数转字符串，不足的位数用0补齐
function intToString(num, len) {
    let str = num.toString();
    while (str.length < len) {
        str = "0" + str;
    }
    return str;
}

var fs = require("fs");
var unzip = require("unzip");
fs.createReadStream(‘C://Users//test//Desktop//file//apache-tomcat-8.5.38.zip‘).pipe(unzip.Extract({ path: ‘C://Users//test//Desktop//file‘ }));

const fs = require("fs");
let readFile = path => {
    return new Promise((resolve,reject) => {
        fs.readFile(path,"utf-8",(err,data) => {
            if(err){
                reject(err);
            }
            else{
                resolve(data);
            }
        });
    });
};

readFile("C://Users//test//Desktop//file//apache-tomcat-8.5.38/BUILDING.txt")
.then(data => {
    console.log(data);
})
.catch(err => {
    console.log("err");
});