(未知网址)的Http失败响应:0未知错误

时间:2018-01-15 19:15:18

标签: php angular docker slim

我目前正在开发一个基于服务的系统,并且对http请求有一些问题(似乎是CORS的一个问题 - 跨源资源共享)。

我发送请求的API是用PHP编写的,使用Slim框架,我实际上是使用以下代码启用CROS:

$app->add(function ($req, $res, $next) {
    $response = $next($req, $res);
    return $response
            ->withHeader('Access-Control-Allow-Origin', '')
            ->withHeader('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type, Accept, Origin, Authorization')
            ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, PATCH, OPTIONS');
});

但是当我从前端发送请求时(用Angular编写):

this.http.get(this.base_url + "api/users/")
    .subscribe(
        (data) => {
            console.log(data);
        },
        (error) => {
            console.log(error);
    });

我收到以下错误:

name:"HttpErrorResponse"

message:"Http failure response for (unknown url): 0 Unknown Error"

这两个项目在Docker中运行,如果它添加了信息。

有没有人知道问题出在哪里?

提前谢谢!

1 个答案:

答案 0 :(得分:0)

这种情况通常是500代码内部服务器错误。

类似的原因:

final LinearLayout singleMonthLayout = (LinearLayout) inflater.inflate(R.layout.calendar_month_view, null);
final GridView gridview = (GridView) singleMonthLayout.findViewById(R.id.gridview);
final CalendarAdapter adapCal = new CalendarAdapter(getContext());
gridview.setAdapter(adapCal); // the adapter for the gridview
 gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(final AdapterView<?> parent, View view, final int position, long id) {
                    if (parent instanceof GridView) {
                        int dayOfMonth = adapCal.getDayOfMonth(position);
                        System.out.println("gridView -> click "+ dayOfMonth +"!");
                        Log.d("-> StackTrace", Log.getStackTraceString(new Exception()));
                        // do stuff;
                     }
monthListView.addHeaderView(singleMonthLayout, null, false);
monthListView.setAdapter(viewAdapter); // the adapter for the listview