标签：htm 磁盘 复习 size har class next parse host
先复习下整个请求的过程
const express = require(‘express‘); const static = require(‘express-static‘); const cookieParser = require(‘cookie-parser‘); const cookieSession = require(‘cookie-session‘); const bodyParser = require(‘body-parser‘); const multer = require(‘multer‘); const ejs = require(‘ejs‘); const jade = require(‘jade‘); const server = express(); server.listen(8999); // 解析cookie server.use(cookieParser(‘dfadfasdfa‘)); // 解析session let arr = []; for(let i = 0; i < 100000; i++) { arr.push(‘key_‘ + Math.random()); } server.use(cookieSession({name: ‘jason_name‘, keys: arr, maxAge: 20*3600*1000})); // post数据 server.use(bodyParser.urlencoded({extended: false})); server.use(multer({dest: ‘./www/upload‘}).any()); // 用户请求 server.use(‘/‘, (req, res, next) => { console.log(req.query, req.body, req.files, req.cookie, req.session); }); server.use(static(‘./www‘));
测试下能不能上传
const express = require(‘express‘); const bodyParser = require(‘body-parser‘); const multer = require(‘multer‘); // fs 可以用来添加上传文件的扩展名(重命名) const fs = require(‘fs‘); const pathLib = require(‘path‘); const server = express(); // 创建一个上传文件对象 // let objMulter = multer({dest: ‘./www/upload‘}); server.use(bodyParser.urlencoded({extended: false})); // server.use(objMulter.any()); server.post(‘/‘, (req, res) => { console.log(‘req.body==>‘,req.body); // 当请求是 enctype=application/x-www-form-urlencoded // req.body==> { f1: ‘mmexport1485905379121.jpg‘ } // 当请求是 multertype/form-type // req.body==> {} // console.log(‘req.files==>‘, req.files); }); server.listen(8999);
上传的表单文件
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>文件上传</title> </head> <body> <form action="http://localhost:8999" method="post" enctype="application/x-www-form-urlencoded"> <!-- <form action="http://localhost:8999" method="post" enctype="multipart/form-data"> --> <!-- <form action="http://localhost:8999" method="post" enctype="text/plain"> --> 文件： <input type="file" name="f1"> <br/> <input type="submit" value="上传"> </form> </body> </html>
const express = require(‘express‘); const bodyParser = require(‘body-parser‘); const multer = require(‘multer‘); // fs 可以用来添加上传文件的扩展名(重命名) const fs = require(‘fs‘); const pathLib = require(‘path‘); const server = express(); // 创建一个上传文件对象 let objMulter = multer({dest: ‘./www/upload‘}); // server.use(bodyParser.urlencoded({extended: false})); server.use(objMulter.any()); server.post(‘/‘, (req, res) => { // console.log(‘req.body==>‘,req.body); console.log(‘req.files==>‘, req.files); // req.files==> [ { fieldname: ‘f1‘, // originalname: ‘IMG_20170125_212945.jpg‘, // encoding: ‘7bit‘, // mimetype: ‘image/jpeg‘, // destination: ‘./www/upload‘, // filename: ‘fa0b73da8bdbcb36e9480e9869c0a2b7‘, // path: ‘www\\upload\\fa0b73da8bdbcb36e9480e9869c0a2b7‘, // size: 226929 } ] }); server.listen(8999);
这个时候你会发现文件上传了，但是文件名没有扩展名
const path = require(‘path‘); let str = ‘c:\\wamp\\www\\a.html‘; let obj = path.parse(str); console.log(obj); // { // root: ‘c:\\‘, // dir: ‘c:\\wamp\\www‘, // base: ‘a.html‘, // ext: ‘.html‘, // name: ‘a‘ // }
const express = require(‘express‘); const bodyParser = require(‘body-parser‘); const multer = require(‘multer‘); // fs 可以用来添加上传文件的扩展名(重命名) const fs = require(‘fs‘); const pathLib = require(‘path‘); const server = express(); // 创建一个上传文件对象 let objMulter = multer({dest: ‘./www/upload‘}); // server.use(bodyParser.urlencoded({extended: false})); server.use(objMulter.any()); server.post(‘/‘, (req, res) => { // console.log(‘req.body==>‘,req.body); console.log(‘req.files==>‘, req.files); // req.files==> [ { fieldname: ‘f1‘, // originalname: ‘IMG_20170125_212945.jpg‘, // encoding: ‘7bit‘, // mimetype: ‘image/jpeg‘, // destination: ‘./www/upload‘, // filename: ‘fa0b73da8bdbcb36e9480e9869c0a2b7‘, // path: ‘www\\upload\\fa0b73da8bdbcb36e9480e9869c0a2b7‘, // size: 226929 } ] //1.获取原始的扩展名 2.重命名临时文件 let newName = req.files[0].path + pathLib.parse(req.files[0].originalname).ext fs.rename(req.files[0].path, newName, (err) => { if(err) { console.log(‘重命名失败‘); }else { console.log(‘命名成功‘); } }); }); // req.files==> [ { fieldname: ‘f1‘, // originalname: ‘IMG_20170125_212945.jpg‘, // encoding: ‘7bit‘, // mimetype: ‘image/jpeg‘, // destination: ‘./www/upload‘, // filename: ‘bb031c31a1016648703a0d54cc93f674‘, // path: ‘www\\upload\\bb031c31a1016648703a0d54cc93f674‘, // size: 226929 } ] // 命名成功 server.listen(8999);
标签：htm 磁盘 复习 size har class next parse host
原文地址：http://www.cnblogs.com/jasonwang2y60/p/7129075.html
