add 增加分页工具
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疯狂的狮子li
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commit
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package com.ruoyi.common.core.page;
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import cn.hutool.core.bean.BeanUtil;
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import com.baomidou.mybatisplus.core.metadata.IPage;
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import com.baomidou.mybatisplus.core.metadata.OrderItem;
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import lombok.Data;
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import lombok.experimental.Accessors;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.stream.Collectors;
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@Data
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@Accessors(chain = true)
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public class PagePlus<T,K> implements IPage<T> {
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protected List<T> records;
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protected List<K> recordsVo;
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protected long total;
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protected long size;
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protected long current;
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protected List<OrderItem> orders;
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protected boolean optimizeCountSql;
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protected boolean isSearchCount;
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protected boolean hitCount;
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protected String countId;
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protected Long maxLimit;
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public PagePlus() {
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this.records = Collections.emptyList();
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this.recordsVo = Collections.emptyList();
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this.total = 0L;
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this.size = 10L;
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this.current = 1L;
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this.orders = new ArrayList();
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this.optimizeCountSql = true;
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this.isSearchCount = true;
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this.hitCount = false;
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}
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public PagePlus(long current, long size) {
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this(current, size, 0L);
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}
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public PagePlus(long current, long size, long total) {
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this(current, size, total, true);
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}
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public PagePlus(long current, long size, boolean isSearchCount) {
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this(current, size, 0L, isSearchCount);
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}
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public PagePlus(long current, long size, long total, boolean isSearchCount) {
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this.records = Collections.emptyList();
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this.total = 0L;
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this.size = 10L;
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this.current = 1L;
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this.orders = new ArrayList();
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this.optimizeCountSql = true;
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this.isSearchCount = true;
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this.hitCount = false;
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if (current > 1L) {
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this.current = current;
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}
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this.size = size;
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this.total = total;
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this.isSearchCount = isSearchCount;
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}
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public boolean hasPrevious() {
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return this.current > 1L;
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}
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public boolean hasNext() {
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return this.current < this.getPages();
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}
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public void recordsToVo(Class<K> kClass) {
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this.recordsVo = this.records.stream()
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.map(any -> BeanUtil.toBean(any, kClass))
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.collect(Collectors.toList());
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}
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@Override
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public String countId() {
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return this.getCountId();
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}
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@Override
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public Long maxLimit() {
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return this.getMaxLimit();
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}
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public PagePlus<T, K> addOrder(OrderItem... items) {
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this.orders.addAll(Arrays.asList(items));
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return this;
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}
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public PagePlus<T, K> addOrder(List<OrderItem> items) {
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this.orders.addAll(items);
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return this;
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}
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@Override
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public List<OrderItem> orders() {
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return this.getOrders();
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}
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@Override
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public boolean optimizeCountSql() {
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return this.optimizeCountSql;
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}
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@Override
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public boolean isSearchCount() {
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return this.total < 0L ? false : this.isSearchCount;
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}
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public PagePlus<T, K> setSearchCount(boolean isSearchCount) {
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this.isSearchCount = isSearchCount;
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return this;
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}
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}
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@ -1,6 +1,7 @@
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package com.ruoyi.common.core.page;
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import lombok.*;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.experimental.Accessors;
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import java.io.Serializable;
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@ -37,7 +38,7 @@ public class TableDataInfo<T> implements Serializable
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* @param list 列表数据
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* @param total 总记录数
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*/
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public TableDataInfo(List<T> list, int total)
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public TableDataInfo(List<T> list, long total)
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{
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this.rows = list;
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this.total = total;
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@ -0,0 +1,101 @@
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package com.ruoyi.common.utils;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.http.HttpStatus;
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import com.baomidou.mybatisplus.core.metadata.OrderItem;
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import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
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import com.ruoyi.common.core.page.PagePlus;
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import com.ruoyi.common.core.page.TableDataInfo;
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import com.ruoyi.common.utils.sql.SqlUtil;
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import java.util.List;
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/**
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* 分页工具
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*
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* @author Lion Li
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*/
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public class PageUtils {
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/**
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* 当前记录起始索引
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*/
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public static final String PAGE_NUM = "pageNum";
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/**
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* 每页显示记录数
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*/
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public static final String PAGE_SIZE = "pageSize";
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/**
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* 排序列
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*/
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public static final String ORDER_BY_COLUMN = "orderByColumn";
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/**
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* 排序的方向 "desc" 或者 "asc".
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*/
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public static final String IS_ASC = "isAsc";
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public static <T, K> PagePlus<T, K> buildPagePlus() {
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Integer pageNum = ServletUtils.getParameterToInt(PAGE_NUM);
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Integer pageSize = ServletUtils.getParameterToInt(PAGE_SIZE);
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String orderByColumn = ServletUtils.getParameter(ORDER_BY_COLUMN);
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String isAsc = ServletUtils.getParameter(IS_ASC);
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PagePlus<T, K> page = new PagePlus<>(pageNum, pageSize);
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if (StrUtil.isNotBlank(orderByColumn)) {
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String orderBy = SqlUtil.escapeOrderBySql(orderByColumn);
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if ("asc".equals(isAsc)) {
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page.addOrder(OrderItem.asc(orderBy));
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} else if ("desc".equals(isAsc)) {
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page.addOrder(OrderItem.desc(orderBy));
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}
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}
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return page;
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}
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public static <T> Page<T> buildPage() {
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Integer pageNum = ServletUtils.getParameterToInt(PAGE_NUM);
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Integer pageSize = ServletUtils.getParameterToInt(PAGE_SIZE);
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String orderByColumn = ServletUtils.getParameter(ORDER_BY_COLUMN);
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String isAsc = ServletUtils.getParameter(IS_ASC);
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Page<T> page = new Page<>(pageNum, pageSize);
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if (StrUtil.isNotBlank(orderByColumn)) {
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String orderBy = SqlUtil.escapeOrderBySql(orderByColumn);
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if ("asc".equals(isAsc)) {
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page.addOrder(OrderItem.asc(orderBy));
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} else if ("desc".equals(isAsc)) {
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page.addOrder(OrderItem.desc(orderBy));
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}
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}
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return page;
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}
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public static <T, K> TableDataInfo<K> buildDataInfo(PagePlus<T, K> page) {
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TableDataInfo<K> rspData = new TableDataInfo<>();
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rspData.setCode(HttpStatus.HTTP_OK);
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rspData.setMsg("查询成功");
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rspData.setRows(page.getRecordsVo());
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rspData.setTotal(page.getTotal());
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return rspData;
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}
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public static <T> TableDataInfo<T> buildDataInfo(Page<T> page) {
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TableDataInfo<T> rspData = new TableDataInfo<>();
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rspData.setCode(HttpStatus.HTTP_OK);
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rspData.setMsg("查询成功");
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rspData.setRows(page.getRecords());
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rspData.setTotal(page.getTotal());
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return rspData;
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}
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public static <T> TableDataInfo<T> buildDataInfo(List<T> list) {
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TableDataInfo<T> rspData = new TableDataInfo<>();
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rspData.setCode(HttpStatus.HTTP_OK);
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rspData.setMsg("查询成功");
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rspData.setRows(list);
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rspData.setTotal(list.size());
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return rspData;
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}
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}
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