如何使用 Guice 在 GWT 的服务层 (DAO) 类中 @Inject HttpSession 对象？
我的 GWT 应用程序中有如此肮脏的代码，我的服务层的某些类依赖于 HttpSession 对象。例如，在我的一个 DAO（这是一个 GWT-RPC 端点）中，我有这样的内容：
public class MyExampleDAO extends RemoteServiceServlet {
public findItems() {
// here I need to get the object session to retrieve the currently logged in user in order to query for all its items...
}
}
问题是，我当前正在迁移代码以使用 RequestFactory。我的 DAO 将不再是 GWT-RPC 端点。所以不需要扩展 RemoteServiceServlet 那么...
你知道我如何获取/注入（可能使用 Guice）我对 HttpSession 对象的依赖，知道我的类不再扩展 RemoteServiceServlet 吗？
I have such a dirty code in my GWT app, some of the classes of my service layer depend on an HttpSession object. So for example, in one of my DAO (which was a GWT-RPC endpoint) I have something like this :
public class MyExampleDAO extends RemoteServiceServlet {
public findItems() {
// here I need to get the object session to retrieve the currently logged in user in order to query for all its items...
}
}
The problem is that, I am currently migrating the code to use RequestFactory. My DAO will not be a GWT-RPC endpoint anymore. So no need to extend RemoteServiceServlet then ...
Do you know how I can get/inject (probably with Guice) my dependency to HttpSession Object, knowing that my class does not extend RemoteServiceServlet anymore?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
getThreadLocalRequest().getSession()应该可以做到。RequestFactoryServlet有一个类似的（但静态的）getThreadLocalRequest()方法，您可以从服务访问该方法。否则，你可以让 Guice 注入一个
Provider，看看这些项目 https://github.com/mgenov/injecting-request-factory 和 https://github.com/etiennep/injected-requestfactory 查看使用 Guice 和 RequestFactory 的一些示例代码。getThreadLocalRequest().getSession()should do it.RequestFactoryServlethas a similar (but static)getThreadLocalRequest()method that you can access from your service.Otherwise, you can get Guice to inject a
Provider<HttpSession>, have a look at these projects https://github.com/mgenov/injecting-request-factory and https://github.com/etiennep/injected-requestfactory for some sample code using Guice with RequestFactory.