Question

我正在尝试从人偶项目中的CLI获取用户名和密码。我想问一个问题，可以很好地使用该值，但是当我执行第二个问题时，它只会冻结输入。几乎就像它实际上没有关闭并返回一样。我似乎无法弄清楚我所缺少的。我试图在问题方法中声明该接口，然后在调用close时销毁它，但这没有用。我感觉自己已经接近了，但是我无法弄清自己想念的是什么。

const login = require('../common/login.js');

userId = await login.getUserId();
console.log(userId) //works
password = await login.getPassword();
console.log(password) //does not work

login.js

const readline = require("readline").createInterface({
  input: process.stdin,
  output: process.stdout
});

var methods = {};

const question = (promptText) => {
    let response;
  readline.setPrompt(promptText)
  readline.prompt();
  return new Promise((resolve, reject) => {
    readline.on('line', (userInput) => {
        console.log('hi');
        response = userInput;
        readline.close();
    });
    readline.on('close', () => {
        console.log('bye');
        resolve(response);
    })

  })
};

methods.getUserId = async() => {
    let username =  question("Username: ");
    return username;
}

methods.getPassword = async() => {
    let password = question("Password: ");
    console.log(password);
    return password;

}

module.exports = methods;

Answer 1

readline.close() 将关闭流。下面的代码对我有用

function input(prompt) {
    return new Promise((callbackFn, errorFn) => {
        readline.question(prompt, (uinput)=> {
            callbackFn(uinput);
        }, ()=> {
            errorFn();
        });
    });
}


const main = async () => {
    amt = await input("Enter the amount to check: ");
    doSomething(amt);
    uname = await input("Enter your name: ");
    doSomethingElse(uname);
    rli.close();
};

main();

使用Readline Node.js提出多个问题

1 个答案: