node.js中上传文件

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下载第三方插件：

在www.npmjs.com中下载formidable模块

表单代码：

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title></head><body>    <form action="http://127.0.0.1:81/dopost" method="post" enctype="multipart/form-data">        <p>姓名：<input type="text" name="name"></p>        <p>性别：<input type="radio" name="sex" value="男">男<input type="radio" name="sex" value="女">女</p>        <p>图片：<input type="file" name="tupian"></p>        <p><input type="submit" value="提交"></p>    </form></body></html>

加载第三方代码接收文件数据：

var http = require("http");var formidable = require('formidable');var fs = require("fs");var sd = require("silly-datetime");var path = require("path");//创建服务器http.createServer(function (req, res) {    //如果你访问地址是这个，并且请求类型是post    if(req.url == "/dopost" && req.method.toLowerCase() == "post"){        var alldata = "";        // parse a file upload        var form = new formidable.IncomingForm();        form.uploadDir = "./uploads";        //执行里面的回调函数的时候，表单已经全部接受完毕了        form.parse(req, function(err, fields, files) {            if(err){                throw err;            }            //时间            var ttt = sd.format(new Date(), 'YYYYMMDDHHmmss');            var ran = parseInt(Math.random() * 89999 + 10000);            var extname = path.extname(files.tupian.name);            var oldpath = __dirname + "/" + files.tupian.path;            var newpath = __dirname + "/uploads/" + ttt + ran + extname;            //改名            fs.rename(oldpath, newpath, function () {                if(err){                    throw Error("改名失败");                }                //所有的文本域、单选框，都在fields存放。所有的文本域都在files存放                res.writeHead(200, {'content-type': 'text/plain; charset=utf-8'});                res.end("成功");            });        });    } else if(req.url == "/"){        fs.readFile("./aa.html", function (err, data) {            res.writeHead(200, {'content-type': 'text/html; charset=utf-8'});            res.end(data);        });    } else {        res.writeHead(404, {'content-type': 'text/html; charset=utf-8'});        res.end("路径错了");    }}).listen(81, "127.0.0.1");

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