完善功能：前端可以配置多排序参数支持依次排序 如：{isAsc:"asc",orderByColumn:"id"} {isAsc:"asc",orde...

抓蛙师

2022-09-19 693a33f660891c98b8b95490d020c428c5da9871

完善功能：前端可以配置多排序参数支持依次排序 如：{isAsc:"asc",orderByColumn:"id"}
{isAsc:"asc",orderByColumn:"id,createTime"}
{isAsc:"asc,desc",orderByColumn:"id,createTime"}
共三种配置方式

 ruoyi-common/src/main/java/com/ruoyi/common/core/domain/PageQuery.java

@@ -3,11 +3,14 @@
import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.metadata.OrderItem;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.sql.SqlUtil;
import lombok.Data;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 * 分页查询实体类
@@ -57,28 +60,51 @@
            pageNum = DEFAULT_PAGE_NUM;
        }
        Page<T> page = new Page<>(pageNum, pageSize);
        OrderItem orderItem = buildOrderItem();
        if (ObjectUtil.isNotNull(orderItem)) {
            page.addOrder(orderItem);
        List<OrderItem> orderItems = buildOrderItem();
        if (ObjectUtil.isNotNull(orderItems)) {
            page.addOrder(orderItems);
        }
        return page;
    }

    private OrderItem buildOrderItem() {
        // 兼容前端排序类型
        if ("ascending".equals(isAsc)) {
            isAsc = "asc";
        } else if ("descending".equals(isAsc)) {
            isAsc = "desc";
        }
        if (StringUtils.isNotBlank(orderByColumn)) {
    private List<OrderItem> buildOrderItem() {
        if (StringUtils.isNotBlank(isAsc) && StringUtils.isNotBlank(orderByColumn)) {
            // 兼容前端排序类型
            isAsc = isAsc.replace("ascending", "asc")
                .replace("descending", "desc");

            String orderBy = SqlUtil.escapeOrderBySql(orderByColumn);
            orderBy = StringUtils.toUnderScoreCase(orderBy);
            if ("asc".equals(isAsc)) {
                return OrderItem.asc(orderBy);
            } else if ("desc".equals(isAsc)) {
                return OrderItem.desc(orderBy);
            //分割orderByColumn和isAsc参数
            String[] orderByArr = orderBy.split(",");
            String[] isAscArr = isAsc.split(",");
            if (isAscArr.length != 1 && isAscArr.length != orderByArr.length) {
                throw new ServiceException("排序参数有误");
            }
            if (isAscArr.length == 1) {
                //isAsc只提供了一个 则全部字段都是如此排序
                if ("asc".equals(isAsc)) {
                    return OrderItem.ascs(orderBy);
                } else if ("desc".equals(isAsc)) {
                    return OrderItem.descs(orderBy);
                } else {
                    throw new ServiceException("isAsc参数有误");
                }
            }
            ArrayList<OrderItem> list = new ArrayList<>();
            //每个字段各自排序
            for (int i = 0; i < isAscArr.length; i++) {
                String isAscStr = isAscArr[i];
                String orderByStr = orderByArr[i];
                if ("asc".equals(isAscStr)) {
                    list.add(OrderItem.asc(orderByStr));
                } else if ("desc".equals(isAscStr)) {
                    list.add(OrderItem.desc(orderByStr));
                } else {
                    throw new ServiceException("isAsc参数有误");
                }
            }
            return list;
        }
        return null;
    }