java.lang.Object
- org.springframework.web.servlet.handler.SimpleServletPostProcessor

All Implemented Interfaces:
Aware, BeanPostProcessor, DestructionAwareBeanPostProcessor, ServletConfigAware, ServletContextAware
```
public class SimpleServletPostProcessor
extends Object
implements DestructionAwareBeanPostProcessor, ServletContextAware, ServletConfigAware
```
BeanPostProcessor that applies initialization and destruction callbacks to beans that implement the Servlet interface.
After initialization of the bean instance, the Servlet init method will be called with a ServletConfig that contains the bean name of the Servlet and the ServletContext that it is running in.
Before destruction of the bean instance, the Servlet destroy will be called.
Note that this post-processor does not support Servlet initialization parameters. Bean instances that implement the Servlet interface are supposed to be configured like any other Spring bean, that is, through constructor arguments or bean properties.
For reuse of a Servlet implementation in a plain Servlet container and as a bean in a Spring context, consider deriving from Spring's HttpServletBean base class that applies Servlet initialization parameters as bean properties, supporting both the standard Servlet and the Spring bean initialization style.
Alternatively, consider wrapping a Servlet with Spring's ServletWrappingController. This is particularly appropriate for existing Servlet classes, allowing to specify Servlet initialization parameters etc.
Since:
1.1.5
Author:
Juergen Hoeller
See Also:
Servlet.init(javax.servlet.ServletConfig), Servlet.destroy(), SimpleServletHandlerAdapter

Constructor Summary
Constructors
Constructor Description
SimpleServletPostProcessor()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`postProcessAfterInitialization(Object bean, String beanName)`	Apply this BeanPostProcessor to the given new bean instance after any bean initialization callbacks (like InitializingBean's `afterPropertiesSet` or a custom init-method).
`void`	`postProcessBeforeDestruction(Object bean, String beanName)`	Apply this BeanPostProcessor to the given bean instance before its destruction, e.g.
`Object`	`postProcessBeforeInitialization(Object bean, String beanName)`	Apply this BeanPostProcessor to the given new bean instance before any bean initialization callbacks (like InitializingBean's `afterPropertiesSet` or a custom init-method).
`boolean`	`requiresDestruction(Object bean)`	Determine whether the given bean instance requires destruction by this post-processor.
`void`	`setServletConfig(ServletConfig servletConfig)`	Set the `ServletConfig` that this object runs in.
`void`	`setServletContext(ServletContext servletContext)`	Set the `ServletContext` that this object runs in.
`void`	`setUseSharedServletConfig(boolean useSharedServletConfig)`	Set whether to use the shared ServletConfig object passed in through `setServletConfig`, if available.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SimpleServletPostProcessor
```
public SimpleServletPostProcessor()
```
- Method Detail
  - setUseSharedServletConfig
```
public void setUseSharedServletConfig(boolean useSharedServletConfig)
```
    Set whether to use the shared ServletConfig object passed in through setServletConfig, if available.
    Default is "true". Turn this setting to "false" to pass in a mock ServletConfig object with the bean name as servlet name, holding the current ServletContext.
    See Also:
    setServletConfig(javax.servlet.ServletConfig)
  - setServletContext
```
public void setServletContext(ServletContext servletContext)
```
    Description copied from interface: ServletContextAware
    Set the ServletContext that this object runs in.
    Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked after ApplicationContextAware's setApplicationContext.
    Specified by:
    setServletContext in interface ServletContextAware
    Parameters:
    servletContext - ServletContext object to be used by this object
    See Also:
    InitializingBean.afterPropertiesSet(), ApplicationContextAware.setApplicationContext(org.springframework.context.ApplicationContext)
  - setServletConfig
```
public void setServletConfig(ServletConfig servletConfig)
```
    Description copied from interface: ServletConfigAware
    Set the ServletConfig that this object runs in.
    Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked after ApplicationContextAware's setApplicationContext.
    Specified by:
    setServletConfig in interface ServletConfigAware
    Parameters:
    servletConfig - ServletConfig object to be used by this object
    See Also:
    InitializingBean.afterPropertiesSet(), ApplicationContextAware.setApplicationContext(org.springframework.context.ApplicationContext)
  - postProcessBeforeInitialization
```
public Object postProcessBeforeInitialization(Object bean,
                                              String beanName)
                                       throws BeansException
```
    Description copied from interface: BeanPostProcessor
    Apply this BeanPostProcessor to the given new bean instance before any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method). The bean will already be populated with property values. The returned bean instance may be a wrapper around the original.
    Specified by:
    postProcessBeforeInitialization in interface BeanPostProcessor
    Parameters:
    bean - the new bean instance
    beanName - the name of the bean
    Returns:
    the bean instance to use, either the original or a wrapped one; if null, no subsequent BeanPostProcessors will be invoked
    Throws:
    BeansException - in case of errors
    See Also:
    InitializingBean.afterPropertiesSet()
  - postProcessAfterInitialization
```
public Object postProcessAfterInitialization(Object bean,
                                             String beanName)
                                      throws BeansException
```
    Description copied from interface: BeanPostProcessor
    Apply this BeanPostProcessor to the given new bean instance after any bean initialization callbacks (like InitializingBean's afterPropertiesSet or a custom init-method). The bean will already be populated with property values. The returned bean instance may be a wrapper around the original.
    In case of a FactoryBean, this callback will be invoked for both the FactoryBean instance and the objects created by the FactoryBean (as of Spring 2.0). The post-processor can decide whether to apply to either the FactoryBean or created objects or both through corresponding bean instanceof FactoryBean checks.
    This callback will also be invoked after a short-circuiting triggered by a InstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation(java.lang.Class<?>, java.lang.String) method, in contrast to all other BeanPostProcessor callbacks.
    Specified by:
    postProcessAfterInitialization in interface BeanPostProcessor
    Parameters:
    bean - the new bean instance
    beanName - the name of the bean
    Returns:
    the bean instance to use, either the original or a wrapped one; if null, no subsequent BeanPostProcessors will be invoked
    Throws:
    BeansException - in case of errors
    See Also:
    InitializingBean.afterPropertiesSet(), FactoryBean
  - postProcessBeforeDestruction
```
public void postProcessBeforeDestruction(Object bean,
                                         String beanName)
                                  throws BeansException
```
    Description copied from interface: DestructionAwareBeanPostProcessor
    Apply this BeanPostProcessor to the given bean instance before its destruction, e.g. invoking custom destruction callbacks.
    Like DisposableBean's destroy and a custom destroy method, this callback will only apply to beans which the container fully manages the lifecycle for. This is usually the case for singletons and scoped beans.
    Specified by:
    postProcessBeforeDestruction in interface DestructionAwareBeanPostProcessor
    Parameters:
    bean - the bean instance to be destroyed
    beanName - the name of the bean
    Throws:
    BeansException - in case of errors
    See Also:
    DisposableBean.destroy(), AbstractBeanDefinition.setDestroyMethodName(String)
  - requiresDestruction
```
public boolean requiresDestruction(Object bean)
```
    Description copied from interface: DestructionAwareBeanPostProcessor
    Determine whether the given bean instance requires destruction by this post-processor.
    NOTE: Even as a late addition, this method has been introduced on DestructionAwareBeanPostProcessor itself instead of on a SmartDABPP subinterface. This allows existing DestructionAwareBeanPostProcessor implementations to easily provide requiresDestruction logic while retaining compatibility with Spring <4.3, and it is also an easier onramp to declaring requiresDestruction as a Java 8 default method in Spring 5.
    If an implementation of DestructionAwareBeanPostProcessor does not provide a concrete implementation of this method, Spring's invocation mechanism silently assumes a method returning true (the effective default before 4.3, and the to-be-default in the Java 8 method in Spring 5).
    Specified by:
    requiresDestruction in interface DestructionAwareBeanPostProcessor
    Parameters:
    bean - the bean instance to check
    Returns:
    true if DestructionAwareBeanPostProcessor.postProcessBeforeDestruction(java.lang.Object, java.lang.String) is supposed to be called for this bean instance eventually, or false if not needed

Class SimpleServletPostProcessor

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SimpleServletPostProcessor

Method Detail

setUseSharedServletConfig

setServletContext

setServletConfig

postProcessBeforeInitialization

postProcessAfterInitialization

postProcessBeforeDestruction

requiresDestruction