POST http：// localhost：3000 / upload 500（内部服务器错误）

Question

I have an error when I send data from client side (angular.js) to server side (node.js). 从客户端（angular.js）向服务器端（node.js）发送数据时出现错误。 I created a form that the user insert data then my controller get the data and sent it to the server to save the data in mongoose and s3(amazon). 我创建了一个表单，供用户插入数据，然后我的控制器获取数据并将其发送到服务器，以将数据保存在mongoose和s3（amazon）中。 I must say that it works fine - I mean I can save all the information I need, I can see it in my DB and I can see the image on s3 我必须说它可以正常工作-我的意思是我可以保存所有需要的信息，可以在数据库中看到它，也可以在s3上看到图像

but, I get an error : POST http://localhost:3000/upload 500 (Internal Server Error) 但是，我收到一个错误： POST http://localhost:3000/upload 500 (Internal Server Error)

my html form: 我的html表格：

<html ng-app="mymed">
 <head>
 <title>insert</title>
 </head>
 <body ng-controller="tryController">
 <main>
 <body>
        <form class="form-group" enctype="multipart/form-data" method="POST" action="http://localhost:3000/upload">
            <label for="inputEmail3" class="col-sm-2 control-label">Title:</label>
            <input class="form-control" type="text" placeholder="Title" ng-model="Title" name="Title" required></input>
          </div>
          <div class="col-sm-10">
            <br>
            <input type="file" name="file" accept="image/*" ng-modle="file"></input>
            </div>
          </div>
           <input type="submit" class="btn btn-default" name="send" ng-click="createInsert()"></input>
        </form>
.....
<script src="js/appController.js"></script>

my controller: 我的控制器：

mymedical.controller('tryController',['$scope','$http','$cookies', function($scope,$http,$cookies){

        $scope.createInsert = function(){     
                var data = {};    
                data.Title = $scope.Title;
                data.file = $scope.file;      
              $http.post('http://localhost:3000/upload', JSON.stringify(data)).then() //callback
        }
}]);

sever side: 切断侧：

exports.saveDatatry=function(request, response){

console.log(request.body);

var file = request.files.file;
    var hash = hasher();

    var stream = fs.createReadStream(file.path)
    var mimetype = mime.lookup(file.path);
    console.log(stream);
    var req;

    if (mimetype.localeCompare('image/jpeg')
        || mimetype.localeCompare('image/pjpeg')
        || mimetype.localeCompare('image/png')
        || mimetype.localeCompare('image/gif')) {

        req = client.putStream(stream, hash+'.png',
            {
                'Content-Type': mimetype,
                'Cache-Control': 'max-age=604800',
                'x-amz-acl': 'public-read',
                'Content-Length': file.size
            },
            function(err, result) {
             var savePerTry = new personal({
                  Title: request.body.Title,
                  file: req.url
              });
              savePerTry.save(function(error, result) {
                if (error) {
                  console.error(error);
                } else {
                  console.log("saved!");
                  response.redirect('http://localhost:8080/tryinsert.html');
                };
              })
          });
       } else {
            console.log(err);
        }

}

What I need to do? 我需要做什么？ Thanks, 谢谢，

Answer 1

Here's your problem: 这是您的问题：

        function(err, result) {
          var savePerTry = new personal({
              Title: request.body.Title,
              file: req.url
          });

Every time you write something like: 每次您编写如下内容：

        function(err, result) {

then the very next line should be: 那么下一行应该是：

            if (err) {
              // ...
            }

When you don't handle the errors you will get 500 internal server errors and you will not know what's wrong. 当您不处理错误时，将收到500个内部服务器错误，并且您将不知道出了什么问题。

Always handle errors. 始终处理错误。

POST http：// localhost：3000 / upload 500（内部服务器错误）

问题描述

1 个解决方案

解决方案1
1 2017-03-24 12:53:46

POST http：// localhost：3000 / upload 500（内部服务器错误）

问题描述

1 个解决方案

解决方案1 1 2017-03-24 12:53:46

解决方案1
1 2017-03-24 12:53:46