nodejs 文件转存

const fs = require('fs');

// 创建可读流
const readableStream = fs.createReadStream('source.txt');

// 创建可写流
const writableStream = fs.createWriteStream('target.txt');

// 通过管道将可读流连接到可写流
readableStream.pipe(writableStream);

console.log('文件转存完成');

const fs = require('fs');

// 创建可读流
const readableStream = fs.createReadStream('source.txt');

// 创建可写流
const writableStream = fs.createWriteStream('target.txt');

// 监听data事件
readableStream.on('data', (chunk) => {
  // 写入数据到可写流
  writableStream.write(chunk);
});

// 监听end事件
readableStream.on('end', () => {
  console.log('文件转存完成');
  // 关闭可写流
  writableStream.end();
});

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

const fileURL = 'http://example.com/file.zip';
const filePath = 'file.zip';

const file = fs.createWriteStream(filePath);

http.get(fileURL, (response) => {
  // 监听data事件进行文件下载
  response.on('data', (chunk) => {
    file.write(chunk);
  });

  // 监听end事件完成文件下载并关闭文件描述符
  response.on('end', () => {
    file.end();
    console.log('文件下载完成');
  });

  // 监听错误事件处理下载错误
  response.on('error', (error) => {
    console.error(error);
  });
});

const http = require('http');
const fs = require('fs');
const FormData = require('form-data');

const file = fs.createReadStream('file.zip');
const form = new FormData();

// 将文件加入到form表单中
form.append('file', file);

// 创建http请求
const request = http.request({
  hostname: 'example.com',
  port: 80,
  path: '/upload',
  method: 'POST',
  headers: form.getHeaders()
});

// 监听http请求返回的数据
request.on('response', (response) => {
  let responseBody = '';
  response.on('data', (chunk) => {
    responseBody += chunk;
  });
  response.on('end', () => {
    console.log(responseBody);
  });
});

// 将form表单数据写入http请求
form.pipe(request);

const fs = require('fs');

// 复制文件
fs.copyFile('source.txt', 'target.txt', (err) => {
  if (err) throw err;
  console.log('文件复制完成');
});

// 移动文件
fs.rename('source.txt', 'target.txt', (err) => {
  if (err) throw err;
  console.log('文件移动完成');
});