我知道这个问题已经被问过很多次了，而且我已经阅读了几乎所有我能找到的关于这个主题的内容，即:

https://stackoverflow.com/a/25022437/1031184

Uploading images using Node.js, Express, and Mongoose

这些是我迄今为止找到的最好的。我的问题是他们仍然不是很清楚，网上几乎没有关于这方面的文档，而且讨论似乎是针对比我先进得多的人。

因此，如果有人可以指导我了解如何使用 Mongoose、Express 和 AngularJS 上传图像，我会非常喜欢。我实际上正在使用 MEAN 全栈。 (准确地说是这个生成器——https://github.com/DaftMonk/generator-angular-fullstack)

添加 Controller :

'use strict';

angular.module('lumicaApp')
  .controller('ProjectAddCtrl', ['$scope', '$location', '$log', 'projectsModel', 'users', 'types', function ($scope, $location, $log, projectsModel, users, types) {
    $scope.dismiss = function () {
      $scope.$dismiss();
    };

        $scope.users = users;
        $scope.types = types;

    $scope.project = {
            name: null,
            type: null,
            images: {
                thumbnail: null // I want to add the uploaded images _id here to reference with mongoose populate.
            },
            users: null
        };

        $scope.save = function () {
            $log.info($scope.project);
            projectsModel.post($scope.project).then(function (project) {
        $scope.$dismiss();
            });
        }

  }]);

我想将图像 ID 引用添加到 project.images.thumbnail 但我想使用以下架构将所有信息存储在图像对象中:

'use strict';

    var mongoose = require('mongoose'),
        Schema = mongoose.Schema;

    var ImageSchema = new Schema({
      fileName: String,
      url: String,
      contentType: String,
      size: String,
      dimensions: String
    });

    module.exports = mongoose.model('Image', ImageSchema);

我还添加了以下 https://github.com/nervgh/angular-file-upload到我的凉亭包。

正如我所说，我只是不知道如何将它们联系在一起。而且我什至不确定我正在尝试做的是否是正确的方法。

----------------------------------- ---------------------------\

更新:

这就是我现在所拥有的，我添加了一些评论，详细说明了我希望它如何工作，不幸的是我仍然没有设法让它工作，我什至无法让图像开始上传，没关系上传到 S3。很抱歉让我感到痛苦，但我只是觉得这特别令人困惑，这让我感到惊讶。

client/app/people/add/add.controller.js

'use strict';

angular.module('lumicaApp')
    .controller('AddPersonCtrl', ['$scope', '$http', '$location', '$window', '$log', 'Auth', 'FileUploader', 'projects', 'usersModel', function ($scope, $http, $location, $window, $log, Auth, FileUploader, projects, usersModel) {
        $scope.dismiss = function () {
            $scope.$dismiss();
        };

        $scope.newResource = {};

        // Upload Profile Image
        $scope.onUploadSelect = function($files) {
            $scope.newResource.newUploadName = $files[0].name;

            $http
                .post('/api/uploads', {
                    uploadName: newResource.newUploadName,
                    upload: newResource.newUpload
                })
                .success(function(data) {
                    newResource.upload = data; // To be saved later
                });
        };

        $log.info($scope.newResource);

        //Get Projects List
        $scope.projects = projects;

        //Register New User
        $scope.user = {};
        $scope.errors = {};


        $scope.register = function(form) {
            $scope.submitted = true;

            if(form.$valid) {
                Auth.createUser({
                    firstName: $scope.user.firstName,
                    lastName: $scope.user.lastName,
                    username: $scope.user.username,
                    profileImage: $scope.user.profileImage, // I want to add the _id reference for the image here to I can populate it with 'ImageSchema' using mongoose to get the image details(Name, URL, FileSize, ContentType, ETC)
                    assigned: {
                        teams: null,
                        projects: $scope.user.assigned.projects
                    },
                    email: $scope.user.email,
                    password: $scope.user.password
                })
                    .then( function() {
                        // Account created, redirect to home
                        //$location.path('/');
                        $scope.$dismiss();
                    })
                    .catch( function(err) {
                        err = err.data;
                        $scope.errors = {};

                        // Update validity of form fields that match the mongoose errors
                        angular.forEach(err.errors, function(error, field) {
                            form[field].$setValidity('mongoose', false);
                            $scope.errors[field] = error.message;
                        });
                    });
            }
        };

        $scope.loginOauth = function(provider) {
            $window.location.href = '/auth/' + provider;
        };

    }]);

server/api/image/image.model.js我想在这里存储所有图像信息并使用它来填充人员 Controller 中的 profileImage。

'use strict';

    var mongoose = require('mongoose'),
        Schema = mongoose.Schema;

    var ImageSchema = new Schema({
      fileName: String,
      url: String, // Should store the URL of image on S3.
      contentType: String,
      size: String,
      dimensions: String
    });

    module.exports = mongoose.model('Image', ImageSchema);

client/app/people/add/add.jade

.modal-header
    h3.modal-title Add {{ title }}
.modal-body
    form(id="add-user" name='form', ng-submit='register(form)', novalidate='')
        .form-group(ng-class='{ "has-success": form.firstName.$valid && submitted,\
        "has-error": form.firstName.$invalid && submitted }')
            label First Name
            input.form-control(type='text', name='firstName', ng-model='user.firstName', required='')
            p.help-block(ng-show='form.firstName.$error.required && submitted')
                | First name is required

        .form-group(ng-class='{ "has-success": form.lastName.$valid && submitted,\
        "has-error": form.lastName.$invalid && submitted }')
            label Last Name
            input.form-control(type='text', name='lastName', ng-model='user.lastName', required='')
            p.help-block(ng-show='form.lastName.$error.required && submitted')
                | Last name is required

        .form-group(ng-class='{ "has-success": form.username.$valid && submitted,\
        "has-error": form.username.$invalid && submitted }')
            label Username
            input.form-control(type='text', name='username', ng-model='user.username', required='')
            p.help-block(ng-show='form.username.$error.required && submitted')
                | Last name is required

        // Upload Profile Picture Here
        .form-group
            label Profile Image
            input(type="file" ng-file-select="onUploadSelect($files)" ng-model="newResource.newUpload")

        .form-group(ng-class='{ "has-success": form.email.$valid && submitted,\
        "has-error": form.email.$invalid && submitted }')
            label Email
            input.form-control(type='email', name='email', ng-model='user.email', required='', mongoose-error='')
            p.help-block(ng-show='form.email.$error.email && submitted')
                | Doesn't look like a valid email.
            p.help-block(ng-show='form.email.$error.required && submitted')
                | What's your email address?
            p.help-block(ng-show='form.email.$error.mongoose')
                | {{ errors.email }}

        .form-group(ng-class='{ "has-success": form.password.$valid && submitted,\
        "has-error": form.password.$invalid && submitted }')
            label Password
            input.form-control(type='password', name='password', ng-model='user.password', ng-minlength='3', required='', mongoose-error='')
            p.help-block(ng-show='(form.password.$error.minlength || form.password.$error.required) && submitted')
                | Password must be at least 3 characters.
            p.help-block(ng-show='form.password.$error.mongoose')
                | {{ errors.password }}

        .form-group
            label Assign Project(s)
            br
            select(multiple ng-options="project._id as project.name for project in projects" ng-model="user.assigned.projects")
        button.btn.btn-primary(ng-submit='register(form)') Save

    pre(ng-bind="user | json")
.modal-footer
    button.btn.btn-primary(type="submit" form="add-user") Save
    button.btn.btn-warning(ng-click='dismiss()') Cancel

server/api/upload/index.js

'use strict';

var express = require('express');
var controller = require('./upload.controller');

var router = express.Router();

//router.get('/', controller.index);
//router.get('/:id', controller.show);
router.post('/', controller.create);
//router.put('/:id', controller.update);
//router.patch('/:id', controller.update);
//router.delete('/:id', controller.destroy);

module.exports = router;

server/api/upload/upload.controller.js

'use strict';

var _ = require('lodash');
//var Upload = require('./upload.model');
var aws = require('aws-sdk');
var config = require('../../config/environment');
var randomString = require('../../components/randomString');

// Creates a new upload in the DB.
exports.create = function(req, res) {
    var s3 = new aws.S3();
    var folder = randomString.generate(20); // I guess I do this because when the user downloads the file it will have the original file name.
    var matches = req.body.upload.match(/data:([A-Za-z-+\/].+);base64,(.+)/);

    if (matches === null || matches.length !== 3) {
        return handleError(res, 'Invalid input string');
    }

    var uploadBody = new Buffer(matches[2], 'base64');

    var params = {
        Bucket: config.aws.bucketName,
        Key: folder + '/' + req.body.uploadName,
        Body: uploadBody,
        ACL:'public-read'
    };

    s3.putObject(params, function(err, data) {
        if (err)
            console.log(err)
        else {
            console.log("Successfully uploaded data to my-uploads/" + folder + '/' + req.body.uploadName);
            return res.json({
                name: req.body.uploadName,
                bucket: config.aws.bucketName,
                key: folder
            });
        }
    });
};

function handleError(res, err) {
    return res.send(500, err);
}

server/config/environment/development.js

aws: {
        key: 'XXXXXXXXXXXX',
        secret: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
        region: 'sydney',
        bucketName: 'my-uploads'
    }

最佳答案

所有这些代码都直接来自一个项目，该项目严重依赖于大文件上传和图像。绝对结帐https://github.com/nervgh/angular-file-upload

在我看来某处:

<div class="form-group">
  <label>File Upload</label>
  <input type="file" ng-file-select="onUploadSelect($files)" ng-model="newResource.newUpload">
</div>

使用模块 angularFileUpload 然后我的 Controller 中有:

$scope.onUploadSelect = function($files) {
  $scope.newResource.newUploadName = $files[0].name;
};

https://github.com/nervgh/angular-file-upload

当用户点击上传时，这会在我发送要上传的文件的地方执行:

$http
  .post('/api/uploads', {
    uploadName: newResource.newUploadName,
    upload: newResource.newUpload
  })
  .success(function(data) {
    newResource.upload = data; // To be saved later
  });

这个请求被发送到一个看起来像这样的 Controller :

'use strict';

var _ = require('lodash');
var aws = require('aws-sdk');
var config = require('../../config/environment');
var randomString = require('../../components/randomString');

// Creates a new upload in the DB.
exports.create = function(req, res) {
  var s3 = new aws.S3();
  var folder = randomString.generate(20); // I guess I do this because when the user downloads the file it will have the original file name.
  var matches = req.body.upload.match(/data:([A-Za-z-+\/].+);base64,(.+)/);

  if (matches === null || matches.length !== 3) {
    return handleError(res, 'Invalid input string');
  }

  var uploadBody = new Buffer(matches[2], 'base64');

  var params = {
    Bucket: config.aws.bucketName,
    Key: folder + '/' + req.body.uploadName,
    Body: uploadBody,
    ACL:'public-read'
  };

  s3.putObject(params, function(err, data) {
    if (err)
      console.log(err)
    else {
      console.log("Successfully uploaded data to csk3-uploads/" + folder + '/' + req.body.uploadName);
      return res.json({
        name: req.body.uploadName,
        bucket: config.aws.bucketName,
        key: folder
      });
    }
   });
};

function handleError(res, err) {
  return res.send(500, err);
}

服务器/组件/randomString/index.js

'use strict';

module.exports.generate = function(textLength) {
  textLength = textLength || 10;
  var text = '';
  var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

  for(var i = 0; i < textLength; i++) {
    text += possible.charAt(Math.floor(Math.random() * possible.length));
  }

  return text;
};

server/config/environment/development.js

server/api/upload/upload.controller.js

关于angularjs - 使用 Mongoose、Express 和 AngularJS 上传图片，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30166907/