com.soento.core.util.BeanUtil Maven / Gradle / Ivy

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package com.soento.core.util;

import com.soento.core.lang.Pojo;
import org.apache.commons.beanutils.BeanUtils;

import java.util.Iterator;
import java.util.Map;

/**
 * @author soento
 */
public class BeanUtil extends BeanUtils {

    public static void copy(Object from, Object to) {
        if (from == null) {
            return;
        }
        if (to == null) {
            throw new RuntimeException("目标拷贝对象不能为空");
        }
        Pojo fObj = Pojo.build(from);
        Pojo tObj = Pojo.build(to);
        Iterator> it = tObj.entrySet().iterator();
        while (it.hasNext()) {
            Map.Entry entry = it.next();
            if (fObj.hasField(entry.getKey())) {
                entry.setValue(fObj.get(entry.getKey()));
            }
        }
        // 覆盖to
        to = tObj.toObject(to.getClass());
    }

    /**
     * 对象构建
     *
     * @param from  拷贝源
     * @param clazz 目标类
     * @param    目标类泛型
     * @return 结果对象
     */
    public static  T build(Object from, Class clazz) {
        if (from == null) {
            return null;
        }
        String json = JsonUtil.toJson(from);
        return JsonUtil.toObject(json, clazz);
    }
}