Nodejs Chinese path garbled

Node.js is an open source, cross-platform backend solution written in JavaScript. It supports building JavaScript applications on the server side and is arguably one of the most popular solutions for back-end development today. However, when using Node.js, if you process Chinese paths, you often encounter garbled characters. This article explains how to resolve this issue.

1. Problem description

When using Node.js to process Chinese paths, the file name or directory may be garbled, for example:

Error: ENOENT: no such file or directory, scandir 'C:Users妲己Desktop    est'

or when using fs.readdir When the () method reads the directory, the following results are obtained:

[ 'C:\Users\琪亚娜\Desktop\test\文件夹1', 'C:\Users\琪亚娜\Desktop\test\文件夹2', 'C:\Users\琪亚娜\Desktop\test\文件夹3' ]

It can be seen that the Chinese characters in the file name or directory name are converted into garbled characters, which is very confusing.

2. Cause Analysis

Garbled characters are usually caused by inconsistent character encoding. In Windows systems, Chinese characters usually use gbk encoding, while Node.js uses utf-8 encoding by default when processing paths, which causes Chinese characters in file names or directory names to be incorrectly parsed.

3. Solution

1. Use iconv-lite library

iconv-lite is a very popular character encoding conversion library, we can use it to solve Chinese paths Garbled code problem.

First, you need to use npm to install iconv-lite:

npm install iconv-lite --save

Then, when using the fs module to read or write files, the file path is encoded and converted through the iconv-lite module. For example:

const iconv = require('iconv-lite');
const fs = require('fs');

let path = 'C:\Users\妲己\Desktop\test';

// 将路径从gbk编码转换为utf-8编码
path = iconv.decode(Buffer.from(path), 'gbk');

// 读取文件
fs.readFileSync(path);

2. Use the node-chardet library

node-chardet is another commonly used character encoding detection library, which can also be used when processing Chinese paths.

First, you need to use npm to install node-chardet:

npm install chardet --save

Then, when using the fs module to read or write files, detect the encoding of the file path through the node-chardet module, and then It is converted to utf-8 encoding. For example:

const chardet = require('chardet');
const fs = require('fs');

let path = 'C:\Users\妲己\Desktop\test';

// 检测路径编码
const encoding = chardet.detectFileSync(path);

// 将路径从检测出的编码转换为utf-8编码
path = iconv.decode(Buffer.from(path), encoding, 'utf-8');

// 读取文件
fs.readFileSync(path);

3. Use StringDecoder

Node.js has a built-in StringDecoder class that can decode bytes in the Buffer object into characters. You can use this class to solve the problem of garbled Chinese paths.

For example:

const { StringDecoder } = require('string_decoder');
const fs = require('fs');

let path = 'C:\Users\妲己\Desktop\test';

// 读取文件
const content = fs.readFileSync(Buffer.from(path));

// 将Buffer对象转换为字符
const decoder = new StringDecoder();
const pathStr = decoder.write(content);

4. Modify the Windows system encoding settings

Under Windows systems, gbk encoding is usually used by default. We can also change it by modifying the encoding settings. Encoded for utf-8. The specific method is:

Open "Control Panel"->"Clock and Region"->"Region"->"Management"->"Change System Regional Settings" and select "Language for Non-Unicode Programs" is set to "Chinese (Simplified, China)" and then restart the computer.

5. Summary

This article introduces the garbled problem that may occur when using Node.js to process Chinese paths, and how to use the iconv-lite library, node-chardet library, StringDecoder class or modification Windows system encoding settings are used to solve this problem. In actual development, we can adopt different solutions according to specific situations, so that Node.js can handle Chinese paths smoothly and provide a better experience for application development.

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