調用帶注釋的方法時運行另一個函數

Question

有沒有辦法創建自定義，或使用現有的注釋來觸發代碼在調用帶注釋的方法時運行？ 最好，我想使用Spring庫。

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
    }
}