Fix Spring DisposableBean Not Working

If the DisposableBean in Spring is not functioning, you can try the following solutions:

1. Make sure your bean implements the DisposableBean interface and override the destroy() method. In the destroy() method, write the code to release resources.
2. Make sure your bean is correctly declared as a Spring bean. This can be done by adding annotations such as @Component, @Service, @Repository to the bean’s definition, or by configuring the bean in the XML configuration file.
3. Make sure that the scope of your bean is set to singleton, as only beans with singleton scope will be automatically managed and recycled by the Spring container.
4. Check if your bean has been correctly injected into other beans. If the dependent bean is not properly closed when the other bean is destroyed, the destroy() method of DisposableBean may not be called.
5. If you are using XML configuration files to declare and inject dependencies for beans, make sure you set the destroy-method attribute in the corresponding bean definition and specify a method name that will be called when the bean is destroyed.

For example, in an XML configuration file, you can declare a bean and set the destroy-method like this:

<bean id="myBean" class="com.example.MyBean" destroy-method="destroy" />

It is important to note that if both the destroy-method attribute and the implementation of the DisposableBean interface are used simultaneously, then the destroy() method of DisposableBean will be called first.

If the previous methods still do not solve the problem, you can try using Spring’s @PreDestroy annotation, which can be used to indicate a method that will be executed before a bean is destroyed. In this method, resources can be manually released.

@Component
public class MyBean {

    @PreDestroy
    public void preDestroy() {
        // 执行释放资源的操作
    }
}

I hope the above methods can help you solve the problem. If the issue persists, please provide more information so we can better assist you in resolving it.