javascript - 文件上传中的Sails js错误

Question

我有一个表单，其中有一个名为“uploadfile”的输入类型文件。选择文件和提交表单时不会发生错误。但是当我没有选择文件并提交表单时出现此错误。

`

if(req.file('uploadfile')._files.length>0){
                var ques_file  = req.file('uploadfile');
                console.log('here');
                ques_file.upload({ 
                  saveAs: function(file, cb) {                       
                            cb(null, file.filename);
                          },
                  dirname: dirPath },function (err, files) {
                  if (err){                        
                    return res.serverError(err);
                  }else{                     
                    name =files[0].filename;
                    filename=name;                     
                    console.log("file : "+filename);

                  }
                });

`在 commad 中有这个错误

 events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: ETIMEOUT: An Upstream (`NOOP_ques_uploadfile`) timed out waiting for file(s). No files were sent after waiting 10000ms.
    at null.<anonymous> (C:\xampp\htdocs\kucbt_admin\node_modules\sails\node_modules\skipper\standalone\Upstream\Upstream.js:62:15)
    at Timer.listOnTimeout [as ontimeout] (timers.js:110:15)

Answer 1

你不应该为 req.file() 使用 if 语句，你可以在 function whenDone 中检查数组的长度，如下例所示:

req.file('avatar').upload({
      saveAs: function(file, cb) {
        cb(null, file.filename);
      },
      dirname: uploadPath
    }, function whenDone(err, uploadedFiles) { //onUploadComplete
      if (uploadedFiles.length==0) {
        //if no file selected.
        sails.log.info('nothing selected');
        return res.view('showimage');
      }
      if (err){
        return res.serverError(err);
      } else{
        return res.view('showimage', {file:uploadedFiles});
      }
    });