nodejs 图片预览和上传的示例代码(3)

var express = require('express');
var multer = require('multer');
var app = express();

//磁盘存储引擎（说白了就是指定上传的文件存储到哪，当然你也可以对文件重命名等等）
var storage=multer.diskStorage({
  destination: function (req, file, cb) {
    //我这里是存储在public下的uploads目录
    cb(null, 'public/uploads/')  
  },
  filename: function (req, file, cb) {
    cb(null, file.fieldname + '-' + Date.now()+"_" + file.originalname)
  }
});

//如果图片上传成功会返回图片的存储路径
app.post('/upload/file', upload.single('avatar'), function(req, res) {
  if (!req.file) {
    console.log("no file received");
    return res.send({
      status: 0,
      filePath:''
    });
  } else {
    console.log('file received');
    res.send({
      status:1,
      filePath: '/uploads/' + path.basename(req.file.path)
    });
  }
});

// 如果图片上传成功会返回图片的存储路径（数组）
app.post('/upload/filesList', upload.array('photos',9), function(req, res) {
  if (req.files==undefined) {
    console.log("no files received");
    return res.send({
      status: 0,
      filePath:''
    });
  } else {
    var filesPathArr=[];
    for(var i=0;i<req.files.length;i++){
      filesPathArr.push('/uploads/' + path.basename(req.files[i].path));
    }
    res.send({
      status:1,
      filesPath: filesPathArr
    });
  }
});