主要使用fs模块的pipe方法,简单粗暴:
import fs from "fs";
import path from 'path';
import request from 'request';
const movieDir = "./";
const movieName = "download_movie";
const url = "http://img4.imgtn.bdimg.com/it/u=2389140428,1315216178&fm=23&gp=0.jpg";
request.get(url).pipe(fs.createWriteStream(path.join(movieDir, movieName + '.jpg')));
输出一张图片:
var http = require("http");
var fs = require("fs");
http.createServer(function(req, res) {
fs.createReadStream("./20170313185619.png").pipe(res);
}).listen(3000, "127.0.0.1");
上传图片:
var express = require('express')
var multer = require('multer')
var app = express()
var storage = multer.diskStorage({
//设置上传后文件路径,uploads文件夹会自动创建。
destination: function(req, file, cb) {
cb(null, './uploads')
},
//给上传文件重命名,获取添加后缀名
filename: function(req, file, cb) {
var fileFormat = (file.originalname).split(".");
cb(null, file.fieldname + '-' + Date.now() + "." + fileFormat[fileFormat.length - 1]);
}
});
//添加配置文件到muler对象。
var upload = multer({
storage: storage
});
app.post('/profile', upload.single('avatar'), function(req, res, next) {
// req.file 是 `avatar` 文件的信息
res.send("upload success")
});
app.listen(3000);