如何在 crud 事件之前或之后执行代码 [英] How to execute code before or after a crud event

问题描述

我正在尝试学习 Java Spring 框架.我一直在关注一些书籍和指南，但它们都是标准的 ToDo(HelloWorld)类型的应用程序.

I am trying to learn Java Spring framework. I have been following some books and guides however they are all the standard ToDo ( HelloWorld ) type applications.

在我一直遵循的指南中通常未涉及的一个主题是如何在执行完全不同(但通常相关)记录的 crud 操作时更新其他系统记录.

One topic that has commonly been untouched in the guides I have been following is how to update other system records upon the execution of crud operations of an entirely different (however usually related) record.

这是一个人为的例子.

我有一个对象 ToDo 保存在数据库中.我还有另一个对象 ToDoDailyReport，它保存在数据库中(忽略这可能是即时计算的事实).

I have an object ToDo which is persisted in the database. I also have another object ToDoDailyReport which is persisted in the database ( ignore the fact that this could probably be calculated on the fly ).

如果我对 ToDo 执行任何 crud 操作，我想更新 ToDoDailyReport

If I execute any crud operation on a ToDo I would like to update the ToDoDailyReport

我正在使用 spring-boot-starter-data-rest 并创建 CrudRepositories 用 @RepositoryRestResource 注释它们，类似于这个例子( 这里 )

I am using spring-boot-starter-data-rest and creating CrudRepositories annotating them with @RepositoryRestResource similar to this example ( Here )

在我看来，我想我可以使用 @RestController 创建一堆自定义控制器并实现我想要的任何行为，但是我喜欢保留它们的 CrudRepositories 原样并简单地在之前或之前执行一个函数的想法在 crud 操作被触发后.我看过关于 AOP 和 AspectJ 的讨论，但是我不确定这些方法是否适用于我的用例，或者我应该实施什么方法以及我将如何触发 AOP 建议 在 crud 操作之前或之后.

In my mind I imagine I could create a bunch of custom controllers using @RestController and implement whatever behaviour I want however I like the idea of leaving their CrudRepositories as is and simply executing a function before or after the crud operation is fired. I have seen discussion of AOP and AspectJ however I am not sure if these approaches are meant for my use case or what approach I should be implementing and how I would fire a AOP advice before or after the crud operation.

任何建议或方向将不胜感激.

Any advice or direction would be appreciated.

推荐答案

我是 Spring Boot 的新手，所以这是否是解决这个问题的正确方法还有待观察，但问题是

I am new to Spring Boot, so whether or not this is the correct approach to solve this problem will remain to be seen however the question

如何在 crud 事件之前或之后执行代码"

"How to execute code before or after a crud event"

使用在 CRUD 操作期间由 REST 导出器触发的事件来回答.

Is answered by using events which are fired by the REST exporter during CRUD operations.

文档可以在这里找到

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