org.treeleafj.xmax.bean.GenericUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of xMax-common Show documentation

The newest version!

package org.treeleafj.xmax.bean;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

/**
 * 泛型工具
 */
public class GenericUtils {

    private static Logger log = LoggerFactory.getLogger(GenericUtils.class);

    /**
     * 获取当前类的泛型类型
     *
     * @param obj
     * @return
     */
    public static Class getGenericFirst(Object obj) {
        Type type = obj.getClass().getGenericSuperclass();
        ParameterizedType pt = (ParameterizedType) type;
        Class classz = ((Class) pt.getActualTypeArguments()[0]);
        return classz;
    }

    /**
     * 获取当前类的多个泛型类型中的第index个
     *
     * @param obj
     * @param index
     * @return
     */
    public static Class getGeneric(Object obj, int index) {
        Type type = obj.getClass().getGenericSuperclass();
        ParameterizedType pt = (ParameterizedType) type;
        Class classz = ((Class) pt.getActualTypeArguments()[index]);
        return classz;
    }

}