Java对象拷贝

// 将一个对象值拷贝另一个对象，并忽略空值
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;

import java.util.*;

public class CopyUtils {
    public static String[] getNullPropertyNames (Object source) {
        final BeanWrapper src = new BeanWrapperImpl(source);
        java.beans.PropertyDescriptor[] pds = src.getPropertyDescriptors();

        Set<String> emptyNames = new HashSet<String>();
        for(java.beans.PropertyDescriptor pd : pds) {
            Object srcValue = src.getPropertyValue(pd.getName());
            if (srcValue == null) emptyNames.add(pd.getName());
        }
        String[] result = new String[emptyNames.size()];
        return emptyNames.toArray(result);
    }

    /**
     * 复制函数
     * @param src 需要被复制的对象
     * @param target 需要赋值给的对象
     */
    public static void copyProperties(Object src, Object target) {
        BeanUtils.copyProperties(src, target, getNullPropertyNames(src));
    }


}

• 实现方法

BeanUtils.copyProperties(inhospRegInsert, patientReportview);