/*
|
* Copyright (c) 2018-2028, DreamLu All rights reserved.
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions are met:
|
*
|
* Redistributions of source code must retain the above copyright notice,
|
* this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* Neither the name of the dreamlu.net developer nor the names of its
|
* contributors may be used to endorse or promote products derived from
|
* this software without specific prior written permission.
|
* Author: DreamLu 卢春梦 (596392912@qq.com)
|
*/
|
package org.springblade.core.tool.utils;
|
|
import org.springframework.core.BridgeMethodResolver;
|
import org.springframework.core.DefaultParameterNameDiscoverer;
|
import org.springframework.core.MethodParameter;
|
import org.springframework.core.ParameterNameDiscoverer;
|
import org.springframework.core.annotation.AnnotatedElementUtils;
|
import org.springframework.core.annotation.SynthesizingMethodParameter;
|
import org.springframework.web.method.HandlerMethod;
|
|
import java.lang.annotation.Annotation;
|
import java.lang.reflect.Constructor;
|
import java.lang.reflect.Method;
|
|
/**
|
* 类操作工具
|
*
|
* @author L.cm
|
*/
|
public class ClassUtil extends org.springframework.util.ClassUtils {
|
|
private static final ParameterNameDiscoverer PARAMETER_NAME_DISCOVERER = new DefaultParameterNameDiscoverer();
|
|
/**
|
* 获取方法参数信息
|
*
|
* @param constructor 构造器
|
* @param parameterIndex 参数序号
|
* @return {MethodParameter}
|
*/
|
public static MethodParameter getMethodParameter(Constructor<?> constructor, int parameterIndex) {
|
MethodParameter methodParameter = new SynthesizingMethodParameter(constructor, parameterIndex);
|
methodParameter.initParameterNameDiscovery(PARAMETER_NAME_DISCOVERER);
|
return methodParameter;
|
}
|
|
/**
|
* 获取方法参数信息
|
*
|
* @param method 方法
|
* @param parameterIndex 参数序号
|
* @return {MethodParameter}
|
*/
|
public static MethodParameter getMethodParameter(Method method, int parameterIndex) {
|
MethodParameter methodParameter = new SynthesizingMethodParameter(method, parameterIndex);
|
methodParameter.initParameterNameDiscovery(PARAMETER_NAME_DISCOVERER);
|
return methodParameter;
|
}
|
|
/**
|
* 获取Annotation
|
*
|
* @param method Method
|
* @param annotationType 注解类
|
* @param <A> 泛型标记
|
* @return {Annotation}
|
*/
|
public static <A extends Annotation> A getAnnotation(Method method, Class<A> annotationType) {
|
Class<?> targetClass = method.getDeclaringClass();
|
// The method may be on an interface, but we need attributes from the target class.
|
// If the target class is null, the method will be unchanged.
|
Method specificMethod = ClassUtil.getMostSpecificMethod(method, targetClass);
|
// If we are dealing with method with generic parameters, find the original method.
|
specificMethod = BridgeMethodResolver.findBridgedMethod(specificMethod);
|
// 先找方法,再找方法上的类
|
A annotation = AnnotatedElementUtils.findMergedAnnotation(specificMethod, annotationType);
|
;
|
if (null != annotation) {
|
return annotation;
|
}
|
// 获取类上面的Annotation,可能包含组合注解,故采用spring的工具类
|
return AnnotatedElementUtils.findMergedAnnotation(specificMethod.getDeclaringClass(), annotationType);
|
}
|
|
/**
|
* 获取Annotation
|
*
|
* @param handlerMethod HandlerMethod
|
* @param annotationType 注解类
|
* @param <A> 泛型标记
|
* @return {Annotation}
|
*/
|
public static <A extends Annotation> A getAnnotation(HandlerMethod handlerMethod, Class<A> annotationType) {
|
// 先找方法,再找方法上的类
|
A annotation = handlerMethod.getMethodAnnotation(annotationType);
|
if (null != annotation) {
|
return annotation;
|
}
|
// 获取类上面的Annotation,可能包含组合注解,故采用spring的工具类
|
Class<?> beanType = handlerMethod.getBeanType();
|
return AnnotatedElementUtils.findMergedAnnotation(beanType, annotationType);
|
}
|
|
|
/**
|
* 判断是否有注解 Annotation
|
*
|
* @param method Method
|
* @param annotationType 注解类
|
* @param <A> 泛型标记
|
* @return {boolean}
|
*/
|
public static <A extends Annotation> boolean isAnnotated(Method method, Class<A> annotationType) {
|
// 先找方法,再找方法上的类
|
boolean isMethodAnnotated = AnnotatedElementUtils.isAnnotated(method, annotationType);
|
if (isMethodAnnotated) {
|
return true;
|
}
|
// 获取类上面的Annotation,可能包含组合注解,故采用spring的工具类
|
Class<?> targetClass = method.getDeclaringClass();
|
return AnnotatedElementUtils.isAnnotated(targetClass, annotationType);
|
}
|
|
}
|