MEANJS：将base64映像发送到服务器的最佳方式

Question

Situation

I'm using MEAN.JS framework ( MongoDB , ExpressJS , AngularJS and NodeJS ).

Using AngularJS in frontEnd; I have a JSON with a base64 encoded image in a field.

What I want?

• I want to send this JSON to the server ( NodeJS ).

I'm using RESTful :

controller :

var article = new Articles ($scope.article);


article.$save(function(response) {
    //If all is OK
}, function(errorResponse) {
    //Error 
 });

$scope.article have a field named " image " ($scope.article.image) with the base64 string of the image.

service:

(function() {
'use strict';

angular
    .module('articles')
    .factory('articles', ['$resource',

    function($resource) {
        return $resource('articles/:articleId', { articleId: '@_id'
        }, {
            update: {
                method: 'PUT'
            }
        });
    }
]);})();

Problems

If the JSON don't have any Base64 Image in a field works fine...

But...

If we add the Base64 String of the Image in a field the server response with this error :

    Error: request entity too large at makeError (/Users/aralroca/Documents/Aral/Projecte/node_modules/body-parser/node_modules/raw-body/index.js:184:15)
at module.exports (/Users/aralroca/Documents/Aral/Projecte/node_modules/body-parser/node_modules/raw-body/index.js:40:15)
at read (/Users/aralroca/Documents/Aral/Projecte/node_modules/body-parser/lib/read.js:62:3)
at jsonParser (/Users/aralroca/Documents/Aral/Projecte/node_modules/body-parser/lib/types/json.js:96:5)
at Layer.handle [as handle_request] (/Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/layer.js:82:5)
at trim_prefix (/Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/index.js:269:13)
at /Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/index.js:236:9
at Function.proto.process_params (/Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/index.js:311:12)
at /Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/index.js:227:12
at Function.match_layer (/Users/aralroca/Documents/Aral/Projecte/node_modules/express/lib/router/index.js:294:3)

Say that the request entity is too large ... The image size is 84Kb !!!!!

(I tried with $http resource and occurs the same...)

• How can I solve this server error?
• What is the best way to send from Angular to Node a Base64 encoded image?
• Any suggestions?

Relationed answers:

• Error: request entity too large
• MEANJS : 413 (Request Entity Too Large)

I tried to do this but don't work and don't understand:

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

bodyParser is deprecated and the size of the Base64 Image is 84kb!!!!!

Thank you!!

Answer 1

Try using :

var express = require('express');
var app = express();
var busboy = require('connect-busboy');

app.post("/url_path",
busboy({
    limits: {
        fileSize: 10 * 1024 * 1024
    }
}),
function(req, res, next) {
    // check that the request's body was as expected
    if (!req.busboy) return next('route'); // or next(new Error('...'));

    // ...
});

// ...

For more info checkout this private npm .