是否可以访问Spring MVC注释会话var跨多个控制器？ [英] Is it possible to access Spring MVC annotated session vars across multiple controllers?

问题描述

我有一个运行Spring 3.0并使用Spring-MVC的Web应用程序。我有几个控制器设置如下：

  @Controller 
 @RequestMapping（/ admin）
 @SessionAttributes（{clientLogin，selectTab，user，redirectUrl}）
 public class AdminController {
 ... 
} 
 
 @Controller 
 @SessionAttributes（{clientLogin，selectTab，user，redirectUrl}）
 public class PublicController {
 .... 
} 
  

我可以将注释变量添加到ModelMap中，例如

  map.addAttribute（user，Bob）; 
  

在电流控制器中保持变量的效果很好。我可以从该控制器中的任何其他方法从模型映射访问var。但是当用户在另一个控制器中点击一个页面时，即使在@SessionAttributes中列出了同一个变量，它在第二个控制器中也不可用。

是否可以使用注释在多个控制器上访问这些注释变量？

解决方案<

如果你想在不同的控制器之间共享这些属性，你可以明确地把这些属性他们进入会话使用：

session.setAttribute（）

I have a web app running Spring 3.0 and using Spring-MVC. I have a few controllers set up like this:

@Controller
@RequestMapping("/admin")
@SessionAttributes({"clientLogin", "selectTab", "user", "redirectUrl"})
public class AdminController {
...
}

@Controller
@SessionAttributes({"clientLogin", "selectTab", "user", "redirectUrl"})
public class PublicController {
....
}

I can add the annotated variables into the ModelMap with something like

map.addAttribute("user", "Bob");

That works fine to persist the variable in the current controller; I can access the var from the modelMap from any other method in that controller. But when the user hits a page in another Controller, even though the same variable is listed in the @SessionAttributes, it's not available in the second controller.

Is it possible to access these annotated variables across multiple controllers using the annotations?

解决方案

No it isn't possible - SessionAttributes are badly named in my opinion.

If you want to share these attributes across different controllers, you can explicitly put them into the session using:

session.setAttribute()

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