node.js – 在Sails js中检查上传的文件扩展名

var md5 = require('md5');
module.exports = {

  testupload:function(req,res){

     // setTing allowed file types
     var allowedTypes = ['image/jpeg','image/png'];

     // skipper default upload directory .tmp/uploads/
     var allowedDir = "../../assets/images";

    // don not define dirname,use default path
    req.file("uploadFiles").upload({
       saveAs:function(file,cb) {
          var d = new Date();
          var extension = file.filename.split('.').pop();
          // generating unique filename with extension
          var uuid=md5(d.getMilliseconds())+"."+ extension;

          // seperate allowed and disallowed file types
          if(allowedTypes.indexOf(file.headers['content-type']) === -1) {
            // save as disallowed files default upload path
            cb(null,uuid);
          }else{
            // save as allowed files
            cb(null,allowedDir+"/"+uuid);
          }
       }
    },function whenDone(err,files){
       return res.json({
         files:files,err:err
        });
      });
    }
 }