Angular 6 HTTP客户端发布-错误的请求

我有以下问题。我有一个使用API​​的服务器，我将请求发送到注册端点，但作为响应，我收到400 Bad Request错误，指出必须填写名称，姓氏，电子邮件等。问题在于它们已被填充。我不再想念想法了。我的代码：

import {Component} from '@angular/core';
import {HttpClient, HttpHeaders} from '@angular/common/http';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    title = 'Brak tytułu';

    constructor(private http: HttpClient) {
    }

    registerUser() {
        const config = {headers: new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')};
        const user: User = {
            name: 'Pawel',
            surname: 'Tester',
            email: '[email protected]',
            password: 'loremipsum12',
            password_confirm: 'loremipsum12',
            event_id: 1,
        };

        this.http.post('https://myapiserver', user, config).subscribe((res) => {
                console.log(res);
                console.log(user);
            },
            error => {
                console.log(error);
                console.log(user);
            });
    }
}

interface User {
    name: string;
    surname: string;
    email: string;
    password: string;
    password_confirm: string;
    event_id: number;
}

这段代码可以正常工作，但是他是angularJS

    // User create
$scope.createUser = function()
{
    var create_req = $rootScope.reqDefaults;
        create_req.method = 'POST';
        create_req.url = $rootScope.api+'/admin/user';
        create_req.data = $httpParamSerializerJQLike($scope.current);
        create_req.transformRequest = angular.identity;

    // Users list
    $http(create_req)
        .then(function(response){
            $location.path('/users');
            $.notify({
                title: '<strong>Użytkownik utworzony.</strong>',
                message: $scope.current.name+' '+$scope.current.surname+' (ID: '+response.data.id+')'
            },{
                type: 'success'
            });
            return true;
        }, function(response){
            $rootScope.rspError(response.data);
            return false;
        });
};

如果我从Postman向注册端点发送请求，则一切正常，我的用户已正确注册:(我将内容类型设置为application / x-www-form-urlencoded。