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注解工具类添加获取合并注解的方法;

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huangchengxing 2022-06-14 15:56:26 +08:00
parent 7ca4a4ffc1
commit ff30bdf1ea
1 changed files with 39 additions and 3 deletions
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42
hutool-core/src/main/java/cn/hutool/core/annotation/AnnotationUtil.java
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@ -1,5 +1,6 @@
package cn.hutool.core.annotation;
import cn.hutool.core.annotation.scanner.*;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.exceptions.UtilException;
import cn.hutool.core.lang.Assert;
@ -19,9 +20,7 @@ import java.lang.annotation.Target;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.*;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;
@ -356,6 +355,43 @@ public class AnnotationUtil {
return (T) Proxy.newProxyInstance(annotationType.getClassLoader(), new Class[]{annotationType}, new AnnotationProxy<>(annotation));
}
/**
* 将指定注解实例与其元注解转为合成注解
*
* @param annotation 注解
* @param annotationType 注解类型
* @param <T> 注解类型
* @return 合成注解
* @see SyntheticAnnotation
*/
public static <T extends Annotation> T getSynthesisAnnotation(Annotation annotation, Class<T> annotationType) {
return SyntheticAnnotation.of(annotation).getAnnotation(annotationType);
}
/**
* 获取元素上所有指定注解
* <ul>
* <li>若元素是类，则递归解析全部父类和全部父接口上的注解;</li>
* <li>若元素是方法、属性或注解，则只解析其直接声明的注解;</li>
* </ul>
*
* @param annotatedElement 可注解元素
* @param annotationType 注解类型
* @param <T> 注解类型
* @return 注解
* @see SyntheticAnnotation
*/
public static <T extends Annotation> List<T> getAllSynthesisAnnotations(AnnotatedElement annotatedElement, Class<T> annotationType) {
AnnotationScanner[] scanners = new AnnotationScanner[] {
new MateAnnotationScanner(), new TypeAnnotationScanner(), new MethodAnnotationScanner(), new FieldAnnotationScanner()
};
return AnnotationScanner.scanByAnySupported(annotatedElement, scanners).stream()
.map(SyntheticAnnotation::of)
.map(annotation -> annotation.getAnnotation(annotationType))
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
/**
* 方法是否为注解属性方法。 <br />
* 方法无参数，且有返回值的方法认为是注解属性的方法。