问题描述
我想能够创建我的春天应用基地控制器，除其他外，确定用户是注册用户与否。这个基地控制器，下面的模板设计模式，将包含该控制器的子类会实现一个抽象protected方法。
I'd like to be able to create a base controller in my Spring app that, among other things, determines if a user is a registered user or not. This base controller, following the template design pattern, would contain an abstract protected method that controller subclasses would implement.
抽象方法会传递给它的用户的一个实例，注册或其它。不过，我不知道我会怎么做，因为它似乎是通过使用控制器纯粹使用注解@Controller每个控制器是免费的但他们喜欢来定义他们的请求处理方法。
The abstract method would have passed to it an instance of User, registered or otherwise. However, I have no idea how I would do this since it seems that by using controllers purely using the @Controller annotation each controller is free to define their request handling method however they like.
就像创建某种用户服务类的注入到每个控制器，并用于验证用户是解决这个的一种方式？这引出了一个问题（至少对我来说）如何这样的控制器获得的HttpServletRequest或Session对象的举行？
Would creating some sort of user service class that is injected into each controller and used to validate a user be one way to get around this? This begs the question (at least for me) how does such a controller get a hold of a HttpServletRequest or the Session object?
感谢。
推荐答案
我觉得基本控制器是不是一个好主意，如果只有code这是有是UserAuthentication ...而不是使用Spring的安全性。这是最好的选择。
I think the Base Controller is not a good idea if the only code it is to have is for UserAuthentication...instead use Spring security. This is the best option.
另外，你可以有方法，这样......看看春季的参考。
Alternatively, you can have methods like this...take a look at the Spring reference..
@Controller("loginController")
public class LoginController {
@RequestMapping(value="/login.do", method=RequestMethod.POST)
public String login(Model model, HttpServletRequest request) {
String userIdFromRequest = (String)request.getParameter("userId");
String password = (String)request.getParameter("password");
boolean verified = ...send userIdFromRequest and password to the user service for
verification...
if (verified){
request.getSession().setAttribute("userId", userIdFromRequest);
}
}
//More Methods
}
有没有帮助？
-SB
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