MEANJS：413（请求实体太大）

Question

I am using a MEANJS stack, I upload an image using ng-flow and save the imgsrc as base64 url.

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAARkAAACzCAYAAAC94GgrA....

Here is my mongoose schema:

var ServiceSchema = new  mongoose.Schema({
    name : String,
    url: String,
    description : String,
    category : String,
    imgsrc: String
});

I run into a Request Entity Too Large server error for large images.

I could resize the image prior to upload but this still only allows me image of size 200 x 200

$scope.resizeimageforupload = function(img){
        var canvas = document.getElementById('canvas');

        var MAX_WIDTH = 200; //400; too big still
        var MAX_HEIGHT = 200; //300 too big still
        var width = img.width;
        var height = img.height;

        if (width > height) {
          if (width > MAX_WIDTH) {
            height *= MAX_WIDTH / width;
            width = MAX_WIDTH;
          }
        } else {
          if (height > MAX_HEIGHT) {
            width *= MAX_HEIGHT / height;
            height = MAX_HEIGHT;
          }
        }
        canvas.width = width;
        canvas.height = height;
        var ctx = canvas.getContext("2d");
        ctx.drawImage(img, 0, 0, width, height);

        var dataURL = canvas.toDataURL("image/png");
        dataURL.replace(/^data:image\/(png|jpg);base64,/, "");

        return dataURL;
    };

Any ideas on a work around or alternate solution ?

request entity too large: 413

Error: request entity too large
    at makeError (Angular\expresstest\node_modules\body-parser\node_modules\raw-body\index.js:184:15)
    at module.exports (Angular\expresstest\node_modules\body-parser\node_modules\raw-body\index.js:40:15)
    at read (Angular\expresstest\node_modules\body-parser\lib\read.js:62:3)
    at jsonParser (Angular\expresstest\node_modules\body-parser\lib\types\json.js:87:5)
    at Layer.handle [as handle_request] (Angular\expresstest\node_modules\express\lib\router\layer.js:76:5)
    at trim_prefix (Angular\expresstest\node_modules\express\lib\router\index.js:270:13)
    at Angular\expresstest\node_modules\express\lib\router\index.js:237:9
    at Function.proto.process_params (Angular\expresstest\node_modules\express\lib\router\index.js:312:12)
    at Angular\expresstest\node_modules\express\lib\router\index.js:228:12
    at Function.match_layer (Angular\expresstest\node_modules\express\lib\router\index.js:295:3)

Answer 1

You can add following to express config:

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

Basically you need to configure Express webserver to accept bigger request size. Replace 50mb with whatever maxsize you want to accept.

Hope this helps!!!

Answer 2

2016, there may have been changes, i needed to set the 'type' in addition to the 'limit' for bodyparser, example: var bodyParser = require('body-parser');

  var app = express();
  var jsonParser       = bodyParser.json({limit:1024*1024*20, type:'application/json'});
  var urlencodedParser = bodyParser.urlencoded({ extended:true,limit:1024*1024*20,type:'application/x-www-form-urlencoding' })

  app.use(jsonParser);
  app.use(urlencodedParser);

Answer 3

Recently, I confronted with this issue and I just added app.use(bodyParser.json({ limit: "50mb" })); this one line in my express app, it just worked :)

And also one more thing don't forget to add above code line before app.use(bodyParser.json()) this otherwise, it won't work.

Whatever you set values regarding bodyparser you've to do before the above code line.

Because, express will go back to its default values and your change won't get effect. I hope this might help :)