Javascript 将图像上载到Node.js image'；未定义的_Javascript_Node.js_Express_File Upload

Javascript 将图像上载到Node.js image'；未定义的

javascript node.js express file-upload

Javascript 将图像上载到Node.js image'；未定义的,javascript,node.js,express,file-upload,Javascript,Node.js,Express,File Upload,对不起，缩进不好我是node.js新手，正在尝试将图像上载到node.js 核对答案，如果我错了，请告诉我 1.bodyParser需要一个中间件来处理二进制文件，如图像如果我不使用它，它会显示出来取消定义令牌 2.使用Multer作为中间件，如下所示 follow，req.files是映像文件，req.body是文件名所以我使用fs.readFile来读取文件 4.如果需要文件路径和文件名，则使用req.body 5.然后通过此命令将数据写入目标我不确定我错过了什么部分，我花了10个

对不起，缩进不好我是node.js新手，正在尝试将图像上载到node.js 核对答案，如果我错了，请告诉我

1.bodyParser需要一个中间件来处理二进制文件，如图像如果我不使用它，它会显示出来

取消定义令牌

2.使用Multer作为中间件，如下所示

follow，req.files是映像文件，req.body是文件名所以我使用fs.readFile来读取文件

4.如果需要文件路径和文件名，则使用req.body

5.然后通过此命令将数据写入目标

我不确定我错过了什么部分，我花了10个小时才完成，请帮忙

它总是告诉我TypeError:无法读取未定义的属性“image”

app.js

var    express = require('express')
      ,bodyParser = require('body-parser')
      ,app = express()
      ,multer  =  require('multer')
      ,binary = require('binary')
      ,fs = require('fs')
      ,util= require('util')
      ,http = require('http')
      ,multer = require('multer')
      ,upload = multer({ dest: '/Node/file-upload/uploads/' });

 app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies.
 app.use(bodyParser.json({limit: '5mb'}));


songs = require('./routes/route');

app.listen(3000, function () {
      console.log('Example app listening on port 3000!');
                          });
app.post('/upload',upload.array(),songs.upload);

app.post('/upload',upload.array('image',1),songs.upload);

route.js

var mongoose = require('mongoose');
var uri = "mongodb://xxxxxx:xxxxxxx@ds061365.mongolab.com:61365/aweitest";
mongoose.connect(uri);
// we're connected!
var db = mongoose.connection.db;
var BSON = require('bson').BSONPure;
var binary = require('binary');
var body = require('body-parser');
var fs = require('fs');

db.on('error', console.error.bind(console, 'connection errrrrrrrror:'));

db.once('open', function() {
     console.log("mongodb is connected!!");
 });

exports.upload = function(req, res) {
    console.log(req.body);
       fs.readFile(req.files.image.path, function (err, data){
            var dirname = "/Node/file-upload/uploads/";
            var newPath = dirname + req.body.image.filename;
       fs.writeFile(newPath, data, function (err) {
            if(err){
                res.json({'response':"Error"});
            }else {
                res.json({'response':"Saved"});
          }
       });
    });
  };

var mongoose = require('mongoose');
var uri = "mongodb://xxxxxx:xxxxxxx@ds061365.mongolab.com:61365/aweitest";
mongoose.connect(uri);
// we're connected!
var db = mongoose.connection.db;
var BSON = require('bson').BSONPure;
var binary = require('binary');
var body = require('body-parser');
var fs = require('fs');

db.on('error', console.error.bind(console, 'connection errrrrrrrror:'));

db.once('open', function() {
     console.log("mongodb is connected!!");
 });

exports.upload = function(req, res) {
    console.log(req.body);
       fs.readFile(req.files.image[0].path, function (err, data){
            var dirname = "/Node/file-upload/uploads/";
            var newPath = dirname + req.body.image.filename;
       fs.writeFile(newPath, data, function (err) {
            if(err){
                res.json({'response':"Error"});
            }else {
                res.json({'response':"Saved"});
          }
       });
    });
  };

错误

app.js

中的

upload.array（）
upload.array('image',1) // 1 here is number of files you would upload

在您的songs.upload
中间件中，您将获得req.files.image作为一个数组
因此，您最好检查数组的长度，并对其进行迭代以保存每个文件，或者如果您只想保存一个文件，则可以执行以下操作
例如：
app.js
var    express = require('express')
      ,bodyParser = require('body-parser')
      ,app = express()
      ,multer  =  require('multer')
      ,binary = require('binary')
      ,fs = require('fs')
      ,util= require('util')
      ,http = require('http')
      ,multer = require('multer')
      ,upload = multer({ dest: '/Node/file-upload/uploads/' });

 app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies.
 app.use(bodyParser.json({limit: '5mb'}));


songs = require('./routes/route');

app.listen(3000, function () {
      console.log('Example app listening on port 3000!');
                          });
app.post('/upload',upload.array(),songs.upload);

app.post('/upload',upload.array('image',1),songs.upload);

route.js
var mongoose = require('mongoose');
var uri = "mongodb://xxxxxx:xxxxxxx@ds061365.mongolab.com:61365/aweitest";
mongoose.connect(uri);
// we're connected!
var db = mongoose.connection.db;
var BSON = require('bson').BSONPure;
var binary = require('binary');
var body = require('body-parser');
var fs = require('fs');

db.on('error', console.error.bind(console, 'connection errrrrrrrror:'));

db.once('open', function() {
     console.log("mongodb is connected!!");
 });

exports.upload = function(req, res) {
    console.log(req.body);
       fs.readFile(req.files.image.path, function (err, data){
            var dirname = "/Node/file-upload/uploads/";
            var newPath = dirname + req.body.image.filename;
       fs.writeFile(newPath, data, function (err) {
            if(err){
                res.json({'response':"Error"});
            }else {
                res.json({'response':"Saved"});
          }
       });
    });
  };

var mongoose = require('mongoose');
var uri = "mongodb://xxxxxx:xxxxxxx@ds061365.mongolab.com:61365/aweitest";
mongoose.connect(uri);
// we're connected!
var db = mongoose.connection.db;
var BSON = require('bson').BSONPure;
var binary = require('binary');
var body = require('body-parser');
var fs = require('fs');

db.on('error', console.error.bind(console, 'connection errrrrrrrror:'));

db.once('open', function() {
     console.log("mongodb is connected!!");
 });

exports.upload = function(req, res) {
    console.log(req.body);
       fs.readFile(req.files.image[0].path, function (err, data){
            var dirname = "/Node/file-upload/uploads/";
            var newPath = dirname + req.body.image.filename;
       fs.writeFile(newPath, data, function (err) {
            if(err){
                res.json({'response':"Error"});
            }else {
                res.json({'response':"Saved"});
          }
       });
    });
  };

谢谢回复，我更改了“app.post（'/upload'，upload.array（），songs.upload）；”仍然在“fs.readFile（req.files.image[0].路径，函数（err，data）”upload.array（'image'，1）btw处回复“无法读取未定义”的属性“image””，我使用POSTMAN测试此apiI检查它将文件定义为，我使用POSTMAN检查标头是否为内容类型→ 内容类型此内容文本的mime类型/html；charset=utf-8不确定出了什么问题…我认为这是内容类型问题，我将尽快尝试解决此问题
var mongoose = require('mongoose');
var uri = "mongodb://xxxxxx:xxxxxxx@ds061365.mongolab.com:61365/aweitest";
mongoose.connect(uri);
// we're connected!
var db = mongoose.connection.db;
var BSON = require('bson').BSONPure;
var binary = require('binary');
var body = require('body-parser');
var fs = require('fs');

db.on('error', console.error.bind(console, 'connection errrrrrrrror:'));

db.once('open', function() {
     console.log("mongodb is connected!!");
 });

exports.upload = function(req, res) {
    console.log(req.body);
       fs.readFile(req.files.image[0].path, function (err, data){
            var dirname = "/Node/file-upload/uploads/";
            var newPath = dirname + req.body.image.filename;
       fs.writeFile(newPath, data, function (err) {
            if(err){
                res.json({'response':"Error"});
            }else {
                res.json({'response':"Saved"});
          }
       });
    });
  };