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提供丰富的Java工具方法

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package cn.hutool.core.bean;

import java.beans.PropertyDescriptor;
import java.util.Map;

import cn.hutool.core.lang.SimpleCache;

/**
 * Bean属性缓存

 * 缓存用于防止多次反射造成的性能问题
 * @author Looly
 *
 */
public enum BeanInfoCache {
	INSTANCE;
	
	private SimpleCache, Map> pdCache = new SimpleCache<>();
	private SimpleCache, Map> ignoreCasePdCache = new SimpleCache<>();
	
	/**
	 * 获得属性名和{@link PropertyDescriptor}Map映射
	 * @param beanClass Bean的类
	 * @param ignoreCase 是否忽略大小写
	 * @return 属性名和{@link PropertyDescriptor}Map映射
	 */
	public Map getPropertyDescriptorMap(Class beanClass, boolean ignoreCase){
		return (ignoreCase ? ignoreCasePdCache : pdCache).get(beanClass);
	}
	
	/**
	 * 加入缓存
	 * @param beanClass Bean的类
	 * @param fieldNamePropertyDescriptorMap 属性名和{@link PropertyDescriptor}Map映射
	 * @param ignoreCase 是否忽略大小写
	 */
	public void putPropertyDescriptorMap(Class beanClass, Map fieldNamePropertyDescriptorMap, boolean ignoreCase){
		(ignoreCase ? ignoreCasePdCache : pdCache).put(beanClass, fieldNamePropertyDescriptorMap);
	}
}