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将 base64 编码的图像上传到 Node.js 服务器不起作用

[英]Uploading a base64 encoded image to Node.js server not working

I'm using MEAN.io and i'm trying to upload a base64 encoded image.我正在使用 MEAN.io 并且我正在尝试上传 base64 编码的图像。

Client side, AngularJS:客户端,AngularJS:

          // Image we're going to send it out
          var base64Image = files[i];

          var file = {
            image: base64Image,
            type: type,
            filetype: extension,
            characterId: character._id
          };

          var newFile = new MediaSendBase64(file);

          newFile.$save(function(image) {
            if ( !image ) {
              console.log('ERROR IMAGE');
            }
            else {
              console.log('SUCCESS.');

              console.log(image);
            }
          });

Server side, NodeJS, controller:服务器端、NodeJS、控制器:

app.use(bodyParser.json({limit: '50mb'}));
app.use(bodyParser.urlencoded({limit: '50mb', extended: true}));

exports.uploadBase64 = function(req, res, next) {

  var uploadPath  = path.normalize(process.cwd() + '/packages/characters/public/assets/uploads/'),
      data        = new Buffer(''),
      imgURL      = undefined,        // public URL to show the pic
      type        = undefined;


  // In case the '/uploads' directoy doesn't exist
  if( !fs.existsSync(uploadPath) ) {
    fs.mkdirSync(uploadPath, 0755);
  }


  // Decoding the base64 image
  var data = new Buffer(req.body.image, 'base64');

  // Creating the name for the file --> characterId + type + timestamp + extension
  var filename = req.body.characterId + '-' + req.body.type + '-' + new Date().getTime().toString() + '.' + req.body.filetype;

  // Writing the image to filesystem
  fs.writeFile(uploadPath + filename, data, function (err) {

    if ( err ) {
      console.log(err);
      return res.status(500).json({
        error: 'Cannot upload the image. Sorry.'
      });
    }

    console.log('SAVED ON HD');

    console.log('FINISHING');

    // Sending success response
    res.json({
      imgURL: imgURL,
      type: type
    });

  });

};

The thing is the file stored in /uploads isn't work.问题是存储在 /uploads 中的文件不起作用。 I can't see the image.我看不到图像。 The base64 image is sent and the file is written to hard disk, but it is not possible to open it.发送base64图像并将文件写入硬盘,但无法打开它。

What's wrong?怎么了? Any suggestion?有什么建议吗?

Thanks!谢谢!

It maybe that you are trying to save the file with the metadata.您可能正在尝试使用元数据保存文件。 hence making the decoded data from base64 invalid.因此使来自 base64 的解码数据无效。

Here is what I mean:这就是我的意思:

data:image/png;base64,iVBORw0KG....

The data:image/png;base64 is just meta and is not encoded using base64 so: data:image/png;base64 只是元数据,不是使用 base64 编码的,所以:

You need to strip that from the sting then decode then save to disk.您需要将其从刺中剥离,然后解码,然后保存到磁盘。

I use this handy function:我使用这个方便的功能:

function decodeBase64Image(dataString) {
  var matches = dataString.match(/^data:([A-Za-z-+\/]+);base64,(.+)$/),
    response = {};

  if (matches.length !== 3) {
    return new Error('Invalid input string');
  }

  response.type = matches[1];
  response.data = new Buffer(matches[2], 'base64');

  return response;
}

source: NodeJS write base64 image-file来源: NodeJS 编写的 base64 图像文件

So a snip from how I use it:所以从我如何使用它的片段:

 var decodedImg = decodeBase64Image(imgB64Data);
 var imageBuffer = decodedImg.data;
 var type = decodedImg.type;
 var extension = mime.extension(type);
 var fileName =  "image." + extension;
 try{
       fs.writeFileSync(".tmp/uploads/" + fileName, imageBuffer, 'utf8');
    }
 catch(err){
    console.error(err)
 }

Where mime is the great node-mime lib.其中 mime 是伟大的 node-mime 库。 npm install mime. npm 安装 mime。

if your using express file upload you could do this如果您使用快速文件上传,您可以这样做

routerApi.patch('/upload_gambar', (req, res) => {
    var file_data= req.files.upload_file_name.data;
    var base64Image = file_data.toString('base64');
}

if your using multer file upload you could do this如果您使用 multer 文件上传,您可以执行此操作

routerApi.patch('/upload_gambar', upload.single('upload_file_name'),(req, res) => {
    var file_data= req.file.buffer
    var base64Image = file_data.toString('base64');
}

Node js base64 to image convert and upload on disk after read and write here code working with me. Node js base64 在与我一起阅读和编写此处的代码后,将图像转换并上传到磁盘上。

var imgBase64 = 'data:image/png;base64,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';

var base64Data = imgBase64.replace(/^data:image\/png;base64,/, "");
    fs.writeFile(uploadPath+"/out.png", base64Data, 'base64', function(err) {
    console.log(err);
    });
fs.readFileSync(base64Data, {encoding: 'base64'});

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