Spring MVC @RequestMapping继承 [英] Spring MVC @RequestMapping Inheritance

问题描述

来自Struts2我习惯于在超类上声明 @Namespace 注释（或 package-info.java ）继承类随后将获取其祖先的 @Namespace 注释中的值，并将其添加到Action的请求路径中。我现在尝试使用 @RequestMapping 注释在Spring MVC中执行类似的操作，如下所示（代码为简洁而修剪）：

Coming from Struts2 I'm used to declaring @Namespace annotation on super classes (or package-info.java) and inheriting classes would subsequently pick up on the value in the @Namespace annotation of its ancestors and prepend it to the request path for the Action. I am now trying to do something similar in Spring MVC using @RequestMapping annotation as follows (code trimmed for brevity):

package au.test

@RequestMapping(value = "/")
public abstract class AbstractController {
    ...
}

au.test.user

@RequestMapping(value = "/user")
public abstract class AbstractUserController extends AbstractController {

    @RequestMapping(value = "/dashboard")   
    public String dashboard() {
        ....
    }
}

au.test.user.twitter

@RequestMapping(value = "/twitter")
public abstract class AbstractTwitterController extends AbstractUserController {
    ...
}

public abstract class TwitterController extends AbstractTwitterController {

    @RequestMapping(value = "/updateStatus")    
    public String updateStatus() {
        ....
    }
}

• / 按预期工作


• / user / dashboard 按预期工作


• 然而，当我希望 / user / twitter / updateStatus 工作时它不会和检查日志我可以看到一个类似于日志的日志条目：


• / works as expect
• /user/dashboard works as expected
• However when I would have expected /user/twitter/updateStatus to work it does not and checking the logs I can see a log entry which looks something like:




org。 springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping
- 映射URL路径[/ tweeter / updateStatus]到处理程序
'twitterController'

org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping - Mapped URL path [/tweeter/updateStatus] onto handler 'twitterController'

我可以启用哪个设置来扫描超类 @RequestMapping 注释并构造正确的路径？

Is there a setting I can enable that will scan the superclasses for @RequestMapping annotations and construct the correct path?

我还认为在 package-info.java 中的包上定义 @RequestMapping 是非法的？

Also I take it that defining @RequestMapping on a package in package-info.java is illegal?

推荐答案

以下基本上变为 / tweeter / updateStatus 而不是 / user / tweeter / updateStatus

The following basically becomes /tweeter/updateStatus and not /user/tweeter/updateStatus

public abstract class TwitterController extends AbstractTwitterController {

    @RequestMapping(value = "/updateStatus")    
    public String updateStatus() {
        ....
    }
}

这是预期的行为，因为你已经覆盖了你声明的原始 @RequestMapping AbstractController 和 AbstractUserController 。

That's the expected behavior since you've overriden the original @RequestMapping you've declared in the AbstractController and AbstractUserController.

实际上当你声明 AbstractUserController 它还覆盖了 @RequestMapping AbstractController 。它只是让你觉得 AbstractController 中的/已被继承。

In fact when you declared that AbstractUserController it also overriden the @RequestMapping for AbstractController. It just gives you the illusion that the / from the AbstractController has been inherited.

有没有设置我可以启用它将扫描超类的 @RequestMapping 注释并构造正确的路径？从来没听说过。

"Is there a setting I can enable that will scan the superclasses for @RequestMapping annotations and construct the correct path?" Not that I know of.

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