Dto转Entity工具类

package com.ekingwin.jc.mall.system.utils;

import com.github.pagehelper.PageInfo;
import org.apache.commons.lang3.StringUtils;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.List;
import java.util.stream.Collectors;

public class ToDtoUtils {

    public static void toDto(Class pc, Object po, Class dc, Object dto) throws Exception {
        //获取实体类的全部属性
        Field[] dcFields = dc.getDeclaredFields();
        Field[] pcFields = pc.getDeclaredFields();

        for (Field dcField : dcFields) {
            //AccessibleTest 类中的成员变量为private
            //取消属性的访问权限控制，即使private属性也可以进行访问
            dcField.setAccessible(true);
            String dcName = dcField.getName();
            //屏蔽序列化的字段
            if ("serialVersionUID".equals(dcName)) {
                continue;
            }
            //遍历entity
            for (Field pcField : pcFields) {
                pcField.setAccessible(true);
                String pcName = pcField.getName();
                if (dcName.equals(pcName)) {
                    String pcMethodName = "get" + StringUtils.capitalize(pcName);
                    Method pcMethod = pc.getDeclaredMethod(pcMethodName);
                    dcField.set(dto, pcMethod.invoke(po));
                }
            }

        }
    }

    public static <IN,OUT> OUT toAllDto(IN in,Class<OUT> clazz) {
        OUT out = null;
        try {
            out= clazz.newInstance();
            ToDtoUtils.toDto(in.getClass(), in, out.getClass(), out);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return out;
    }

    /**
     * 分页
     * @param inPageInfo
     * @param clazz
     * @param <T>
     * @param <E>
     * @return
     */
    public static <T,E> PageInfo<T> toPageDto(PageInfo<E> inPageInfo, Class<T> clazz){
        PageInfo<T> outPageInfo=new PageInfo<T>();
        copy(inPageInfo,outPageInfo);

        List<E> inList=inPageInfo.getList();
        List<T> outList=inList.stream().map(in -> ToDtoUtils.toAllDto(in,clazz)).collect(Collectors.toList());
        outPageInfo.setList(outList);
        return outPageInfo;
    }

    private static <E, T> void copy(PageInfo<E> inPageInfo, PageInfo<T> outPageInfo) {
        outPageInfo.setSize(inPageInfo.getSize());
        outPageInfo.setEndRow(inPageInfo.getEndRow());
        outPageInfo.setHasNextPage(inPageInfo.isHasNextPage());
        outPageInfo.setHasPreviousPage(inPageInfo.isHasPreviousPage());
        outPageInfo.setIsFirstPage(inPageInfo.isIsFirstPage());
        outPageInfo.setIsLastPage(inPageInfo.isIsLastPage());
        outPageInfo.setNavigateFirstPage(inPageInfo.getNavigateFirstPage());
        outPageInfo.setNavigateLastPage(inPageInfo.getNavigateLastPage());
        outPageInfo.setNavigatepageNums(inPageInfo.getNavigatepageNums());
        outPageInfo.setNavigatePages(inPageInfo.getNavigatePages());
        outPageInfo.setNextPage(inPageInfo.getNextPage());
        outPageInfo.setPageNum(inPageInfo.getPageNum());
        outPageInfo.setPages(inPageInfo.getPages());
        outPageInfo.setPageSize(inPageInfo.getPageSize());
        outPageInfo.setPrePage(inPageInfo.getPrePage());
        outPageInfo.setStartRow(inPageInfo.getStartRow());
        outPageInfo.setTotal(inPageInfo.getTotal());
    }
}