Question

我正在尝试将文件上传到NAS /网络共享路径/远程服务器。下面是我上传文件的角度代码。

//My component code upload method
 upload() {
    //locate the file element meant for the file upload.
        let inputEl: HTMLInputElement = this.el.nativeElement.querySelector('#txtUpload');
    //get the total amount of files attached to the file input.
        let fileCount: number = inputEl.files.length;
    //create a new fromdata instance
        let formData = new FormData();
    //check if the filecount is greater than zero, to be sure a file was selected.
        if (fileCount > 0) { // a file was selected            
            formData.append('uploadedFile', inputEl.files.item(0));           
            this.fileUploadService.uploadFile(formData).subscribe(res=>{
              console.log(res);
            });       
               
          }
        }

<!--my HTML code-->

<input id="txtUpload" type="file" class="form-control"/>
<button type="button" class="btn btn-success btn-s" (click)="upload()">
Upload
</button>

Upload方法正在调用角度服务，该角度服务在内部调用express API。

下面是我API中的代码。

var express =require('express');
var router=express.Router();
var multer=require('multer');
var fs = require('fs');

var tempDir='./uploads/';
//my shared path is in this format.
var sharedPath='\\\\mycomputer.abc.com\\Upload\\Files\\';
//multer module disk storage
var storage = multer.diskStorage({
    destination: function (req, file, cb) {
      cb(null, tempDir)
    },
    filename: function (req, file, cb) {
      cb(null, renameFile(file.originalname))
    }
  })

var upload = multer({storage: storage}).single('uploadedFile');

//upload file to shared path
router.post('/', function (req, res, next) {    
    
    //upload is multer function which will store file in temp path
    upload(req, res, function (err) {
       if (err) {        
         console.log(err);
         return res.status(422).send('temporary file store failed.');
       }
       else{
      
      //Read file from temparory path
      fs.readFile(req.file.path,function(err,data){
        if(err){
            console.log(err);
            res.status(422).send('file read from temporary path failed.');
        }
        else{
            console.log(data);
        //write file to shared path
        fs.writeFile(sharedPath+req.file.filename,data,function(err){
            if(err){
                console.log(err);
                res.status(422).send('file write to remote server path failed.');
            }            
            else{
                res.send({file:req.file});                
            }
       })
    }
      });
    }
       
        
 });    
})

function renameFile(originalFileName){
    let lastIndex=originalFileName.lastIndexOf('.');
    let fileName=originalFileName;
    let fileExtension='';
    if(lastIndex>-1)
    {
        fileName=originalFileName.substring(0,lastIndex);
        fileExtension=originalFileName.substring(lastIndex);
    }

    return fileName+'-'+Date.now()+fileExtension;

    
}

module.exports = router;

在API代码中，我正在使用Multer包将文件上传到运行API的服务器上。使用fs.FileRead将该读取文件发布，然后使用fs.writeFile将文件写入NAS或共享路径。

此代码在我的本地计算机上正常工作。

但是，当我使用Cloud Foundry部署代码时，未在共享路径上创建文件。我没有任何错误。代码没有失败，但是也没有在共享路径上创建文件。有什么建议我该怎么办？

更新：忘了提到我的机器上装有Windows 10。 cloud Foundry创建Linux虚拟机来托管API。另外，我正在使用nodejs_buildpack来为Cloud Foundry重新构建。

在Cloud Foundry中部署后，NodeJs文件无法上传到远程服务器

0 个答案: