Question

正如标题所述，我想知道是否可以在node.js中使用10-24 20:52:34.944 13879-13879/? D/TESTDB: Found Job Job001 10-24 20:52:34.944 13879-13879/? D/TESTDB: Found Job Job002 10-24 20:52:34.944 13879-13879/? D/TESTDB: Found Job Job003 10-24 20:52:34.944 13879-13879/? D/TESTDB: Found Job Job004（https://nodejs.org/dist/latest-v8.x/docs/api/util.html#util_util_promisify_original）作为promisify？我只能这样做：

readline

Answer 1

这里有另一种方法。它不使用promisify，我认为更简单：

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

function question(query) {
    return new Promise(resolve => {
        readline.question(query, resolve);
    })
}

async function main() {
    const name = await question('Whats your name? ');
    console.log(`hello ${name}!`);
    readline.close();
}

main();

Answer 2

以下是我如何readline.question承诺的一个示例：

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

// Prepare readline.question for promisification
readline.question[util.promisify.custom] = (question) => {
  return new Promise((resolve) => {
    readline.question(question, resolve);
  });
};

// Usage example:
const answer = await promisify(readline.question)('What is your name? ');
readline.close();
console.log('Hi %s!', answer);

用于自定义承诺函数的节点（v8）文档：https://nodejs.org/dist/latest-v8.x/docs/api/util.html#util_custom_promisified_functions

Answer 3

尝试使用创建http://bluebirdjs.com/docs/api/promise.promisifyall.html

的蓝鸟

但如果代码有效。那么我认为你不需要承诺，因为你已经把它作为诺言归还了。

Node.js - 宣传readline

3 个答案: