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Add ClassFile variant for class metadata reading

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Prior to this commit, Spring Framework would use its own ASM fork to
read class/method/annotation metadata from bytecode. This is typically
used in configuration class parsing to build bean definitions without
actually loading classes at runtime at that step.

This commit adds support for a new metadata reading implementation that
uses the ClassFile API available as of Java 24. For now, this is turned
on by default for Java 24+.

Closes gh-33616
This commit is contained in:
Brian Clozel
2025-03-25 15:33:53 +01:00
parent 20b35f068a
commit fb423d66e3
13 changed files with 1397 additions and 365 deletions
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3
spring-beans/src/main/java/org/springframework/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.java
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@@ -84,7 +84,6 @@ import org.springframework.core.annotation.MergedAnnotations;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.MethodMetadata;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.classreading.SimpleMetadataReaderFactory;
import org.springframework.javapoet.ClassName;
import org.springframework.javapoet.CodeBlock;
import org.springframework.util.Assert;
@@ -271,7 +270,7 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
"AutowiredAnnotationBeanPostProcessor requires a ConfigurableListableBeanFactory: " + beanFactory);
}
this.beanFactory = clbf;
this.metadataReaderFactory = new SimpleMetadataReaderFactory(clbf.getBeanClassLoader());
this.metadataReaderFactory = MetadataReaderFactory.create(clbf.getBeanClassLoader());
}