如何影响播放控制器中的重定向行为? [英] How can I influence the redirect behavior in a play-controller?

问题描述

在游戏中，您始终遵循 Redirect-After-Pattern 如果从控制器的公共方法调用.在大多数情况下，这是一种良好的行为，但有时可能会令人讨厌. 因此，我试图找出它在游戏1.1中的工作原理！: 基本的是一些字节码增强，这是在play.classloading.enhancers.ControllersEnhancer中完成的. 在那里，您会发现默认行为仍然存在一些例外情况:

In play you always follow the Redirect-After-Post-Pattern if you call from a public-method of a controller. This is in most cases a good behavior, but sometime it could be nasty. So I tried to find out how it works in play 1.1!: The basic is some byte-code-enhancement, which is done in play.classloading.enhancers.ControllersEnhancer. There you can find that there still exists some exceptions of the default behavior:

1. 如果您的方法由包play.mvc中的注释(例如，Before-annotation)注释.
2. 您使用ByPass -Annotation注释您的操作，此Annotation必须是内部类，因此名称以$ByPass结尾.

1. If your method is annotated by an annotation from the package play.mvc, for example the Before-annotation.
2. You annotate your action with the ByPass-Annotation, this Annotation must be an inner-class so the name endsWith $ByPass.

如果您总是想抑制重定向，则两种解决方案都可以.但是，如果您只想在特殊情况下这样做怎么办? 然后，您可以拨打ControllerInstrumentation.initActionCall().

Both solutions are fine if you always want to suppress the redirect. But what if you only want to do it in special situation? Then you can call ControllerInstrumentation.initActionCall().

我没有找到关于它的描述，我只是分析代码.那么我的结论是正确的还是有任何弊端?

I don't find a description about it, I just analyze the code. So are my conclusion correct or have the any drawbacks?

推荐答案

对于我所知，您的假设是正确的.

For what I know you assumptions are correct.

那就是说，据我了解，您想要一个在执行后结束并且什么都不返回的方法?不要在末尾添加任何"render"调用(或对另一个方法的任何调用)，这应该可以工作.我将其用于cron作业.

That said, for what I understand you want a method that ends after execution and returns nothing? Don't add any "render" call at the end (or any call to another method) and that should work. I use it for cron jobs.

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