|
@@ -0,0 +1,147 @@
|
|
|
|
+package com.ruoyi.common.utils;
|
|
|
|
+
|
|
|
|
+import cn.hutool.http.HttpStatus;
|
|
|
|
+import com.baomidou.mybatisplus.core.metadata.OrderItem;
|
|
|
|
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
|
|
|
|
+import com.ruoyi.common.core.page.PagePlus;
|
|
|
|
+import com.ruoyi.common.core.page.TableDataInfo;
|
|
|
|
+import com.ruoyi.common.utils.sql.SqlUtil;
|
|
|
|
+
|
|
|
|
+import java.util.List;
|
|
|
|
+
|
|
|
|
+/**
|
|
|
|
+ * 分页工具
|
|
|
|
+ *
|
|
|
|
+ * @author Lion Li
|
|
|
|
+ */
|
|
|
|
+public class PageUtils {
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 当前记录起始索引
|
|
|
|
+ */
|
|
|
|
+ public static final String PAGE_NUM = "pageNum";
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 每页显示记录数
|
|
|
|
+ */
|
|
|
|
+ public static final String PAGE_SIZE = "pageSize";
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 排序列
|
|
|
|
+ */
|
|
|
|
+ public static final String ORDER_BY_COLUMN = "orderByColumn";
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 排序的方向 "desc" 或者 "asc".
|
|
|
|
+ */
|
|
|
|
+ public static final String IS_ASC = "isAsc";
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 当前记录起始索引 默认值
|
|
|
|
+ */
|
|
|
|
+ public static final int DEFAULT_PAGE_NUM = 1;
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 每页显示记录数 默认值 默认查全部
|
|
|
|
+ */
|
|
|
|
+ public static final int DEFAULT_PAGE_SIZE = Integer.MAX_VALUE;
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 构建 plus 分页对象
|
|
|
|
+ *
|
|
|
|
+ * @param <T> domain 实体
|
|
|
|
+ * @param <K> vo 实体
|
|
|
|
+ * @return 分页对象
|
|
|
|
+ */
|
|
|
|
+ public static <T, K> PagePlus<T, K> buildPagePlus() {
|
|
|
|
+ Integer pageNum = ServletUtils.getParameterToInt(PAGE_NUM, DEFAULT_PAGE_NUM);
|
|
|
|
+ Integer pageSize = ServletUtils.getParameterToInt(PAGE_SIZE, DEFAULT_PAGE_SIZE);
|
|
|
|
+ String orderByColumn = ServletUtils.getParameter(ORDER_BY_COLUMN);
|
|
|
|
+ String isAsc = ServletUtils.getParameter(IS_ASC);
|
|
|
|
+ if (pageNum <= 0) {
|
|
|
|
+ pageNum = DEFAULT_PAGE_NUM;
|
|
|
|
+ }
|
|
|
|
+ PagePlus<T, K> page = new PagePlus<>(pageNum, pageSize);
|
|
|
|
+ OrderItem orderItem = buildOrderItem(orderByColumn, isAsc);
|
|
|
|
+ page.addOrder(orderItem);
|
|
|
|
+ return page;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static <T> Page<T> buildPage() {
|
|
|
|
+ return buildPage(null, null);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 构建 MP 普通分页对象
|
|
|
|
+ *
|
|
|
|
+ * @param <T> domain 实体
|
|
|
|
+ * @return 分页对象
|
|
|
|
+ */
|
|
|
|
+ public static <T> Page<T> buildPage(String defaultOrderByColumn, String defaultIsAsc) {
|
|
|
|
+ Integer pageNum = ServletUtils.getParameterToInt(PAGE_NUM, DEFAULT_PAGE_NUM);
|
|
|
|
+ Integer pageSize = ServletUtils.getParameterToInt(PAGE_SIZE, DEFAULT_PAGE_SIZE);
|
|
|
|
+ String orderByColumn = ServletUtils.getParameter(ORDER_BY_COLUMN, defaultOrderByColumn);
|
|
|
|
+ String isAsc = ServletUtils.getParameter(IS_ASC, defaultIsAsc);
|
|
|
|
+ if (pageNum <= 0) {
|
|
|
|
+ pageNum = DEFAULT_PAGE_NUM;
|
|
|
|
+ }
|
|
|
|
+ Page<T> page = new Page<>(pageNum, pageSize);
|
|
|
|
+ OrderItem orderItem = buildOrderItem(orderByColumn, isAsc);
|
|
|
|
+ page.addOrder(orderItem);
|
|
|
|
+ return page;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ private static OrderItem buildOrderItem(String orderByColumn, String isAsc) {
|
|
|
|
+ // 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)) {
|
|
|
|
+ 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);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ return null;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static <T, K> TableDataInfo<K> buildDataInfo(PagePlus<T, K> page) {
|
|
|
|
+ TableDataInfo<K> rspData = new TableDataInfo<>();
|
|
|
|
+ rspData.setCode(HttpStatus.HTTP_OK);
|
|
|
|
+ rspData.setMsg("查询成功");
|
|
|
|
+ rspData.setRows(page.getRecordsVo());
|
|
|
|
+ rspData.setTotal(page.getTotal());
|
|
|
|
+ return rspData;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static <T> TableDataInfo<T> buildDataInfo(Page<T> page) {
|
|
|
|
+ TableDataInfo<T> rspData = new TableDataInfo<>();
|
|
|
|
+ rspData.setCode(HttpStatus.HTTP_OK);
|
|
|
|
+ rspData.setMsg("查询成功");
|
|
|
|
+ rspData.setRows(page.getRecords());
|
|
|
|
+ rspData.setTotal(page.getTotal());
|
|
|
|
+ return rspData;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static <T> TableDataInfo<T> buildDataInfo(List<T> list) {
|
|
|
|
+ TableDataInfo<T> rspData = new TableDataInfo<>();
|
|
|
|
+ rspData.setCode(HttpStatus.HTTP_OK);
|
|
|
|
+ rspData.setMsg("查询成功");
|
|
|
|
+ rspData.setRows(list);
|
|
|
|
+ rspData.setTotal(list.size());
|
|
|
|
+ return rspData;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static <T> TableDataInfo<T> buildDataInfo() {
|
|
|
|
+ TableDataInfo<T> rspData = new TableDataInfo<>();
|
|
|
|
+ rspData.setCode(HttpStatus.HTTP_OK);
|
|
|
|
+ rspData.setMsg("查询成功");
|
|
|
|
+ return rspData;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+}
|