调用带注释的方法时运行另一个函数

Question

有没有办法创建自定义或使用现有的注释来触发代码在调用带注释的方法时运行？最好是使用 Spring 库。

例如：

@SendEmail("templateName")
public void doSomething() {
    log.info("Something is happening");
}

public void sendEmail(String templateName) {
    // This method is called everytime doSomething() is called
    log.info("Sending email using template " + templateName);
}

Answer 1

@Component
@Aspect
public class Mail {
    @After("execution (@com.yourdirectoryofyourcustomAnnotation.SendMail * *(..))")
    public void sendEmail(JointPoint jp){
        // it will send a mail after every method which tagged by your annotation
    }
}