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將 base64 編碼的圖像上傳到 Node.js 服務器不起作用

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

我正在使用 MEAN.io 並且我正在嘗試上傳 base64 編碼的圖像。

客戶端,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);
            }
          });

服務器端、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
    });

  });

};

問題是存儲在 /uploads 中的文件不起作用。 我看不到圖像。 發送base64圖像並將文件寫入硬盤,但無法打開它。

怎么了? 有什么建議嗎?

謝謝!

您可能正在嘗試使用元數據保存文件。 因此使來自 base64 的解碼數據無效。

這就是我的意思:

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

data:image/png;base64 只是元數據,不是使用 base64 編碼的,所以:

您需要將其從刺中剝離,然后解碼,然后保存到磁盤。

我使用這個方便的功能:

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;
}

來源: NodeJS 編寫的 base64 圖像文件

所以從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)
 }

其中 mime 是偉大的 node-mime 庫。 npm 安裝 mime。

如果您使用快速文件上傳,您可以這樣做

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

如果您使用 multer 文件上傳,您可以執行此操作

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 在與我一起閱讀和編寫此處的代碼后,將圖像轉換並上傳到磁盤上。

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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