如何使用nodejs上传图片并表达?

时间:2016-11-21 17:30:01

标签: javascript jquery html node.js express

我有一个用于食品自动化系统的CMS,我将为食品上传图片添加一部分:

<form method="post" enctype="multipart/form-data" action="/upload">
    <td><input class="styleFormForAddProducts foodpicForAddFood" type="file" name="file"></td>
    <td><input class="styleFormForAddProducts submitForAddFood" type="submit" value="Submit" ></td>
</form>

我在Express.js中编写了用于发出POST请求的代码:

app.post('/upload', function (req, res) {
    var tempPath = req.files.file.path, 
        targetPath = path.resolve('./uploads/image.png');
    if (path.extname(req.files.file.name).toLowerCase() === '.png') {
        fs.rename(tempPath, targetPath, function(err) {
            if (err) 
                throw err;
            console.log("Upload completed!");
        });
    } else {
        fs.unlink(tempPath, function () {
            if (err) 
                throw err;
            console.error("Only .png files are allowed!");
        });
    }
}); 

但是当我定义这个app.use时,我收到一个错误:

  

中间件:app.use(express.bodyParser({uploadDir:&#39; / img&#39;}));
  错误:错误:大多数中间件(如bodyParser)不再与Express捆绑在一起,必须单独安装。请参阅https://github.com/senchalabs/connect#middleware

当我定义这样的中间件时:

app.use(bodyParser({uploadDir:'/img/'}));

我没有任何错误,但我的代码无法正常运行。

1 个答案:

答案 0 :(得分:0)

这个解决方案对我有用:

multer  = require('multer'),
upload = multer({ dest: 'views/img' });




app.post('/upload',upload.single('file'), function (req, res) {

});

我的表单HTML形成:

<form method="post" enctype="multipart/form-data" action="/upload">
    <input class="styleFormForAddProducts foodpicForAddFood" type="file" name="file">
    <input class="styleFormForAddProducts submitForAddFood" type="submit" value="Submit" >
</form>