使用流克隆檔案
該程式說明了如何使用檔案系統模組提供的 createReadStream()
和 createWriteStream()
函式使用可讀寫流複製檔案。
//Require the file System module
var fs = require('fs');
/*
Create readable stream to file in current directory (__dirname) named 'node.txt'
Use utf8 encoding
Read the data in 16-kilobyte chunks
*/
var readable = fs.createReadStream(__dirname + '/node.txt', { encoding: 'utf8', highWaterMark: 16 * 1024 });
// create writable stream
var writable = fs.createWriteStream(__dirname + '/nodeCopy.txt');
// Write each chunk of data to the writable stream
readable.on('data', function(chunk) {
writable.write(chunk);
});