再写一个HK2中ConfigBeanProxyCustomizer的例子
时间: 2024-03-14 11:43:04 浏览: 19
好的,这里是另一个HK2中ConfigBeanProxyCustomizer的例子:
```java
@Singleton
public class MyConfigBeanProxyCustomizer implements ConfigBeanProxyCustomizer {
private final Logger logger = LoggerFactory.getLogger(MyConfigBeanProxyCustomizer.class);
@Inject
private Config config;
@Override
public <T> T customizeProxy(T original, Class<T> configBeanClass) {
logger.info("Customizing config bean proxy for class {}", configBeanClass.getName());
// Check if the config bean class implements a certain interface
if (SomeInterface.class.isAssignableFrom(configBeanClass)) {
// Create a dynamic proxy that adds additional behavior to the config bean
return (T) Proxy.newProxyInstance(
configBeanClass.getClassLoader(),
new Class[]{configBeanClass, SomeInterface.class},
new MyInvocationHandler(original));
}
return original;
}
private static class MyInvocationHandler implements InvocationHandler {
private final Object original;
public MyInvocationHandler(Object original) {
this.original = original;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
// Add additional behavior before or after calling the original method
// ...
// Call the original method
Object result = method.invoke(original, args);
// Add additional behavior before or after returning the result
// ...
return result;
}
}
}
```
在这个例子中,我们检查了代理对象的类是否实现了一个特定的接口`SomeInterface`,如果是,我们就创建了一个动态代理对象,并在代理对象上添加了`SomeInterface`的实现。我们使用一个`InvocationHandler`来实现这个接口,并在其中添加了一些额外的行为。在`invoke`方法中,我们可以在调用原始方法之前或之后添加额外的行为,比如日志记录、安全检查等。最后,我们返回原始方法的结果。
相关推荐
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![docx](https://img-home.csdnimg.cn/images/20210720083331.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)