angularjs - FormData 附加不适用于 $http post

Question

我想将信息提交到在线服务器，它要求我使用 FormData 发送该信息。 所以我使用以下函数来实现

var my_app = angular.module("my-app",[])
my_app.controller("MainController", function($scope, $http){
    $scope.master = {title: "Title",desc: "Desctibe", tags: ["One","Two"], category: ["1","2"] };
    var url = "http://freedoctor.southeastasia.cloudapp.azure.com/api/forum/create";
    var config = {"headers":{"Authorization":"JWT eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjU5MzEwNDUxZjk3MjJmZTQyODE1NTIxYSIsInJvbGUiOiJwYXRpZW50IiwiaWF0IjoxNDk3NDE4ODA3fQ.ODrSlYwxvrPb93IzHW3s-7NIVFsOL4pKzqZx8yMqWWE"}};

    $scope.booking = function(){
        $scope.title=$scope.user.title;
        $scope.desc=$scope.user.desc;
        $scope.tags=$scope.user.tags;
        $scope.category=$scope.user.category;
        $scope.askedTo=$scope.user.askedTo;
        var info = new FormData();
        info.append("title", $scope.title);
        info.append("desc", $scope.desc);
        info.append("tags", $scope.tags);
        info.append("category", $scope.category);


        $http.post("http://localhost:8080/"+url, info, config).then(
        function(response){
            console.log(response);
            $scope.reply = response.data;
            },
            function(response){
                console.log(response);
                $scope.reply = response.data;
            });
    }

    $scope.reset = function() {
        $scope.user = angular.copy($scope.master);
    };
    $scope.reset();
});

因此，每当我调用预订功能时，我都会收到内部服务器错误

SyntaxError: Unexpected token -
at parse (/home/freedoctor/fdhbackend/node_modules/body-parser/lib/types/json.js:83:15)
at /home/freedoctor/fdhbackend/node_modules/body-parser/lib/read.js:116:18
at invokeCallback (/home/freedoctor/fdhbackend/node_modules/raw-body/index.js:262:16)
at done (/home/freedoctor/fdhbackend/node_modules/raw-body/index.js:251:7)
at IncomingMessage.onEnd (/home/freedoctor/fdhbackend/node_modules/raw-body/index.js:307:7)
at emitNone (events.js:86:13)
at IncomingMessage.emit (events.js:185:7)
at endReadableNT (_stream_readable.js:974:12)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

当我用这个检查时，我知道 FormData 正在工作

for (var pair of info.entries()) {
  console.log(pair[0]+ ', ' + pair[1]); 
}

Answer 1

您尝试沿 formData 对象传递的附加数据应附加到 FormData 对象的 data 属性中。我曾经写过下面的函数。应该也适合你:

this.uploadFile = function (url, dataToUpload) {
            var data = new FormData();
            data.append("file", dataToUpload.file); //if you want to upload files along, else ignore this line
            data.append("data", angular.toJson(dataToUpload.data)); //you can pass an object containing additional data and then append it here to the data property
            return $http.post(url, data, {
                transformRequest: angular.identity,
                headers: { 'Content-Type': undefined }
            });
        }

您可以将 .then 回调链接到该函数返回的对象。

尝试此操作，如果遇到任何问题请更新。