如何在javascript中将字节数组转换为字符串[重复]

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Converting byte array to string in javascript 5 answers
在javascript 5答案中将字节数组转换为字符串

I am getting a response from a SOAP server and it is an array of bytes, fixed size.

我从SOAP服务器获得响应，它是一个固定大小的字节数组。

For instance, I get { rsp: { errorNumber: '1', errorMessage: { item: [Object] } } }

例如，我得到{rsp：{errorNumber：'1'，errorMessage：{item：[Object]}}}

[ '73',
  '110',
  '118',
  '97',
  '108',
  '105',
  '100',
  '32',
  '112',
  '97',
  '115',
  '115',
  '119',
  '111',
  '114',
  '100',
  '0']

How do I turn that array to a string it javascript?

如何将该数组转换为javascript的字符串？

3 个解决方案

#1

Each "byte" in your array is actually the ASCII code for a character. String.fromCharCode will convert each code into a character.

数组中的每个“字节”实际上是字符的ASCII代码。 String.fromCharCode会将每个代码转换为一个字符。

It actually supports an infinite number of parameters, so you can just do:

它实际上支持无数个参数，所以你可以这样做：

String.fromCharCode.apply(String, arr);

When ran on your array you get: "Invalid password".

在您的阵列上运行时，您会收到：“密码无效”。

As @Ted Hopp points out, the 0 at the end is going to add a null character to the string. To remove it, just do: .replace(/\0/g,'').

正如@Ted Hopp指出的那样，最后的0将为字符串添加一个空字符。要删除它，只需执行：.replace（/ \ 0 / g，''）。

String.fromCharCode.apply(String, arr).replace(/\0/g,'');

#2

Here is what you want, the String.fromCharCode function:

这是你想要的，String.fromCharCode函数：

var foo = [ 
  '73',
  '110',
  '118',
  '97',
  '108',
  '105',
  '100',
  '32',
  '112',
  '97',
  '115',
  '115',
  '119',
  '111',
  '114',
  '100',
  '0'];

var str = '';
for (var i=0; i<foo.length; ++i) {
  str+= String.fromCharCode(foo[i]);
}

console.log(str);

Or better :

或更好：

var str = String.fromCharCode.apply(null, foo);

#3

Here's one more alternative using map:

这是使用地图的另一种选择：

var str = arr.map(String.fromCharCode).join("");

#1