com.github.cosycode.common.util.reflex.ReflexUtils Maven / Gradle / Ivy

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A more powerful tool class based on org.apache.commons:commons-lang3

There is a newer version: 1.12

package com.github.cosycode.common.util.reflex;

import com.github.cosycode.common.lang.ShouldNotHappenException;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import lombok.NonNull;

import java.lang.reflect.Field;

/**
 * Description :  反射工具类
 * 
 * created in  2021/3/8
 *
 * @author CPF
 * @since 1.2
 **/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class ReflexUtils {

    /**
     * 通过反射从 对象中 获取属性值
     *
     * @param obj           带获取值的对象
     * @param attributeName 属性名称
     * @return 对象中对应属性的值
     * @throws NoSuchFieldException 对象中没有对应属性
     */
    @SuppressWarnings("java:S3011")
    public static Object getAttributeFromObject(@NonNull Object obj, @NonNull String attributeName) throws NoSuchFieldException {
        final Class aClass = obj.getClass();
        final Field declaredField = aClass.getDeclaredField(attributeName);
        try {
            declaredField.setAccessible(true);
            return declaredField.get(obj);
        } catch (IllegalAccessException e) {
            throw new ShouldNotHappenException(e);
        }
    }

}