十六进制字符串Node.js中的字符串到十六进制转换 [英] Hex to String & String to Hex conversion in nodejs

查看:1852
本文介绍了十六进制字符串Node.js中的字符串到十六进制转换的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要使用nodejs 8将数据转换为String到Hex,然后再次从Hex转换为String



从Hex解码为String时出现问题



字符串转换为十六进制的代码

 函数stringToHex(str)
{
const buf = Buffer.from(str,'utf8');
return buf.toString('hex');
}

十六进制转换为字符串的代码

  function hexToString(str)
{
const buf =新的Buffer(str,'hex');
return buf.toString(’utf8’);
}

我有字符串 dailyfile.host



编码的输出 3162316637526b62784a5a37697a45796c656d465643747a4a505a6f59774641534c75714733544b4446553d



解码的输出 1b1f7RkbxJZ7izEylemFVCtzJPZoYwFASLuqG3TKDFU =



<解码的strong>必需输出: dailyfile.host

解决方案

您还需要使用 Buffer.from()进行解码。考虑编写一个高阶函数以减少重复代码的数量。

  const convert =(from,to)=> str => Buffer.from(str,from).toString(to)
const utf8ToHex = convert('utf8','hex')
const hexToUtf8 = convert('hex','utf8')

hexToUtf8(utf8ToHex('dailyfile.host'))==='dailyfile.host'


I need to convert data into String to Hex and then again from Hex to String using nodejs 8

I have issue while decoding from Hex to String

Code to convert string into hex

function stringToHex(str)
{
    const buf = Buffer.from(str, 'utf8');
    return buf.toString('hex');
}

Code to convert hex into string

function hexToString(str)
{
    const buf = new Buffer(str, 'hex');
    return buf.toString('utf8');
}

I have string dailyfile.host

output of encoding: 3162316637526b62784a5a37697a45796c656d465643747a4a505a6f59774641534c75714733544b4446553d

output of decoding: 1b1f7RkbxJZ7izEylemFVCtzJPZoYwFASLuqG3TKDFU=

Required output of decoding: dailyfile.host

解决方案

You need to use Buffer.from() for decoding as well. Consider writing a higher-order function to reduce the amount of repeated code:

const convert = (from, to) => str => Buffer.from(str, from).toString(to)
const utf8ToHex = convert('utf8', 'hex')
const hexToUtf8 = convert('hex', 'utf8')

hexToUtf8(utf8ToHex('dailyfile.host')) === 'dailyfile.host'

这篇关于十六进制字符串Node.js中的字符串到十六进制转换的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆