nodejs 接收上传的图片

1.nodejs接收上传的图片主要是使用formidable模块，服务器是使用的express搭建。

引入formidable

var formidable = require('./node_modules/formidable');

拦截请求，设置formidable的常规项

app.post("/image",function (req,res) {
    var form = new formidable.IncomingForm();
    form.encoding = 'utf-8';
    form.uploadDir = path.join(__dirname + "/../page/upload");
    form.keepExtensions = true;//保留后缀
    form.maxFieldsSize = 2 * 1024 * 1024;

});

解析图片，重命名图片名称，返回给前端

 //处理图片
    form.parse(req, function (err, fields, files){
        console.log(files.the_file);
        var filename = files.the_file.name
        var nameArray = filename.split('.');
        var type = nameArray[nameArray.length - 1];
        var name = '';
        for (var i = 0; i < nameArray.length - 1; i++) {
            name = name + nameArray[i];
        }
        var date = new Date();
        var time = '_' + date.getFullYear() + "_" + date.getMonth() + "_" + date.getDay() + "_" + date.getHours() + "_" + date.getMinutes();
        var avatarName = name + time + '.' + type;
        var newPath = form.uploadDir + "/" + avatarName;
        fs.renameSync(files.the_file.path, newPath);  //重命名
        res.send({data:"/upload/"+avatarName})
    })

完整代码如下

var path = require("path");
var fs = require("fs");
var express =require("./node_modules/express");
var app=express();
var bodyParser = require('./node_modules/body-parser');
var formidable = require('./node_modules/formidable');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static(__dirname + "./../page"));
app.listen("8083",function () {
    console.log("服务启动")
});
//拦截请求
app.post("/image",function (req,res) {
    var form = new formidable.IncomingForm();
    form.encoding = 'utf-8';
    form.uploadDir = path.join(__dirname + "/../page/upload");
    form.keepExtensions = true;//保留后缀
    form.maxFieldsSize = 2 * 1024 * 1024;
    //处理图片
    form.parse(req, function (err, fields, files){
        console.log(files.the_file);
        var filename = files.the_file.name
        var nameArray = filename.split('.');
        var type = nameArray[nameArray.length - 1];
        var name = '';
        for (var i = 0; i < nameArray.length - 1; i++) {
            name = name + nameArray[i];
        }
        var date = new Date();
        var time = '_' + date.getFullYear() + "_" + date.getMonth() + "_" + date.getDay() + "_" + date.getHours() + "_" + date.getMinutes();
        var avatarName = name + time + '.' + type;
        var newPath = form.uploadDir + "/" + avatarName;
        fs.renameSync(files.the_file.path, newPath);  //重命名
        res.send({data:"/upload/"+avatarName})
    })
});