如何从Play!Framework获取异常ID和标题?

时间:2013-07-09 09:05:59

标签: exception logging playframework-2.1

我正在使用Play!Framework和Java,我想在控制台中显示异常ID和异常的标题,只有那个。

为了测试,我创建了一个像这样的Global对象:

public class Global extends GlobalSettings {
    @Override
    public Result onError(RequestHeader request, Throwable throwable) {
        Logger.info(Json.toJson(throwable).toString());
        return super.onError(request, throwable);
    }
}

这将输出一个JSON格式的Throwable值,其中包含:

{
    "cause": { ... },
    "stackTrace": [ ... ],
    "title": "Execution exception",
    "description": "[NullPointerException: null]",
    "id": "6epj67c35",
    "message": "Execution exception[[NullPointerException: null]]",
    "localizedMessage": "Execution exception[[NullPointerException: null]]",
    "suppressed": []
}

证明可以访问ID和标题,但如果我尝试:

throwable.getId(); // does not exists
throwable.getTitle(); // Does not neither

那么,我如何访问id和title?

1 个答案:

答案 0 :(得分:2)

对于那个,我看了Play20 code at Github,更准确地说是那两个类:

事实上,Play抛出了一个PlayException,它扩展了UsefullException,包含id,title和description。所以我就是这样做的:

public class Global extends GlobalSettings {
    @Override
    public Result onError(RequestHeader request, Throwable throwable) {
        if (throwable instanceof PlayException) {
            Logger.info(((PlayException) throwable).id);
        }
        return super.onError(request, throwable);
    }
}

就是这样! :)