org.springframework.boot.autoconfigure.web.servlet

Annotation Type ConditionalOnMissingFilterBean

@Target(value={TYPE,METHOD})
 @Retention(value=RUNTIME)
 @Documented
 @ConditionalOnMissingBean(parameterizedContainer=FilterRegistrationBean.class)
public @interface ConditionalOnMissingFilterBean

Conditional that only matches when no Filter beans of the specified type are contained in the BeanFactory. This condition will detect both directly register Filter beans as well as those registered via a FilterRegistrationBean.

When placed on a @Bean method, the bean class defaults to the return type of the factory method or the type of the Filter if the bean is a FilterRegistrationBean:

 @Configuration
 public class MyAutoConfiguration {

     @ConditionalOnMissingFilterBean
     @Bean
     public MyFilter myFilter() {
         ...
     }

 }

In the sample above the condition will match if no bean of type MyFilter or FilterRegistrationBean<MyFilter> is already contained in the BeanFactory.

Since:

2.1.0

Author:

Phillip Webb

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
Class<? extends javax.servlet.Filter>[]	value The filter bean type that must not be present.

Element Detail

value

@AliasFor(annotation=ConditionalOnMissingBean.class)
public abstract Class<? extends javax.servlet.Filter>[] value

The filter bean type that must not be present.

Returns:

the bean type

Default:

{}