每当我说@Transactional 时，回滚每个已检查的异常

问题描述

由于程序员被迫捕获所有已检查的异常，因此如果出现任何问题，我将抛出已检查的异常.我想回滚这些期望中的任何一个.在每个 @Transactional 注释上编写 rollbackFor=Exception.class 非常容易出错，所以我想告诉 spring:每当我写 @Transactional，我的意思是 @Transactional(rollbackFor=Exception.class)".

我知道，我可以创建自定义注释，但这似乎不自然.

那么有没有办法告诉 spring 它应该如何全局处理已检查的异常?

解决方案

自定义快捷方式注释

我知道，我可以创建自定义注释，但这似乎不自然.

不，这正是自定义注释的用例.这是引用自 Spring 参考中的>自定义快捷方式注释:

如果你发现你反复使用相同的属性@Transactional 在许多不同的方法，然后是 Spring 的元注解支持允许您定义自定义您特定的快捷方式注释用例.

示例代码

这是您的用例的示例注释:

@Target({ElementType.METHOD, ElementType.TYPE})@Retention(RetentionPolicy.RUNTIME)@Transactional(rollbackFor=Exception.class)公共@interface MyAnnotation {}

现在用 @MyAnnotation 注释你的服务和/或方法(你会想到一个更好的名字).这是经过充分测试的默认功能.为什么要重新发明轮子?

Since the programmer is forced to catch all checked exception, I to throw checked exception in case of any problem. I would like to rollback on any of those expections. Writing rollbackFor=Exception.classon every @Transactional annotation is very error-prone, so I would like to tell spring, that: "whenever I write @Transactional, I mean @Transactional(rollbackFor=Exception.class)".

I know, that I could create a custom annotation, but that seems unnatural.

So is there a way to tell spring how it should handle checked excpetions globally?

解决方案

Custom Shortcut Annotations

No, this is exactly the use case for a Custom Annotation. Here's a quote from Custom Shortcut Annotations in the Spring Reference:

Sample Code

And here's a sample annotation for your use case:

@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Transactional(rollbackFor=Exception.class)
public @interface MyAnnotation {
}

Now annotate your services and / or methods with @MyAnnotation (you'll think of a better name). This is well-tested functionality that works by default. Why re-invent the wheel?

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