annotations

How to apply spring boot filter based on URL pattern?

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There is another option if you are able to extend OncePerRequestFilter. For example: public class SomeFilter extends OncePerRequestFilter { @Override protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { // your filter logic …. } @Override protected boolean shouldNotFilter(HttpServletRequest request) { String path = request.getServletPath(); return !path.startsWith(“/api/secure/”); } }

how to get parameter’s annotation in java?

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getParameterAnnotations returns one array per parameter, using an empty array for any parameter which doesn’t have any annotations. For example: import java.lang.annotation.*; import java.lang.reflect.*; @Retention(RetentionPolicy.RUNTIME) @interface TestMapping { } public class Test { public void testMethod(String noAnnotation, @TestMapping String withAnnotation) { } public static void main(String[] args) throws Exception { Method method = Test.class.getDeclaredMethod (“testMethod”, … Read more

Is it possible for class to inherit the annotations of the super class

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Yes it is possible if the annotation has @Inherited added to it. For example, the @Transactional annotation has @Inherited. From the docs: Indicates that an annotation type is automatically inherited. If an Inherited meta-annotation is present on an annotation type declaration, and the user queries the annotation type on a class declaration, and the class … Read more

@OneToMany mappedBy maps to _____

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Yes wrapper for javax.mail.Header is needed, in general you cannot persist directly arbitrary classes, especially not the ones that are not Serializable. Also they cannot be elements of list that designs relationship between entities. Value of mappedBy is name of the field that is owning side of bidirectional relationship. For a sake of example, let’s … Read more

How to add a dataclass field without annotating the type?

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The dataclass decorator examines the class to find fields, by looking for names in __annotations__. It is the presence of annotation which makes the field, so, you do need an annotation. You can, however, use a generic one: @dataclass class Favs: fav_number: int = 80085 fav_duck: ‘typing.Any’ = object() fav_word: str=”potato”

Why isn’t Spring running my @Scheduled method?

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add “task:annotation-driven” ? <beans> <!– XMLNS, XSD declarations omitted for brevity –> <context:component-scan base-package=”com.mypackage”/> <task:annotation-driven/> <task:executor id=”executor” pool-size=”5″/> <task:scheduler id=”scheduler” pool-size=”5″/> <task:annotation-driven scheduler=”scheduler” executor=”executor”/> </beans> reference http://howtodoinjava.com/2013/04/23/4-ways-to-schedule-tasks-in-spring-3-scheduled-example/ or Spring @Configuration (non-xml configuration) for annotation-driven tasks Just add @EnableScheduling on you WebMvcConfig class @Configuration @EnableWebMvc @EnableAsync @EnableScheduling public class WebMvcConfig extends WebMvcConfigurerAdapter { /** Annotations config … Read more

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