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在调用带注释的方法时运行的代码？最好，我想使用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
    }
}