可以借助工具 插件pagehepler但是必须要遍历,不然会返回一个page对象,做了一个原始分页 原理都是一样的
首先是maven包
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.1.4</version>
</dependency>
配置拦截器 spring_mybaties
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageHelper">
<property name="properties">
<value>
dialect=mysql
</value>
</property>
</bean>
</array>
</property>
mapper. xml
<select id="selectdiscountsGoodsBydiscountsname" resultType="goods">
select g.* from t_goods g,t_discounts d where g.goodsname=d.discountsname
</select>
select g.* from t_goods g,t_discounts d where g.goodsname=d.discountsname
</select>
controller
@RequestMapping("cp.do")
public ModelAndView cp(HttpServletRequest request){
//获取当前页数
String pageNow=request.getParameter("pageNow");
//获取总页数
int totalCount=(int)goodsService.findNewCont();
Page page=null;
List<Goods> list=new ArrayList<Goods>();
if (pageNow!=null) {
page=new Page(Integer.parseInt(pageNow), totalCount);
list=goodsService.findNewsPage(page.getStartPos(),page.getPageSize());
}else {
page=new Page(1, totalCount);
list=goodsService.findNewsPage(page.getStartPos(),page.getPageSize());
}
System.out.println("list"+list);
System.out.println("page"+page);
ModelAndView mvc=new ModelAndView("cp");//自动拼接
mvc.addObject("list", list);
mvc.addObject("page", page);
return mvc;
}
工具类不能忘,网上有很多可以借鉴
package com.Rice.util;
import java.io.Serializable;
public class Page implements Serializable {
private static final long serialVersionUID = 1L;
private int pageNow = 1; // 当前也是
private int pageSize = 6; // 每页显示的数量
private int totalCount; // 总记录数
private int totalPageCount; // 总页数
private int startPos; // 开始位置,从0开始
private boolean hasFrist; // 是否有首页
private boolean hasPre; // 是否有前一页
private boolean hasNext; // 是否有后一页
private boolean hasLast; // 是否有尾页
/**
* 通过构造函数,传入总记录数和当前页
*
* @param pageNow
* @param totalCount
*/
public Page(int pageNow, int totalCount) {
super();
this.pageNow = pageNow;
this.totalCount = totalCount;
}
// 获取总页数
public int getTotalPageCount() {
totalPageCount = getTotalCount() / getPageSize();
return (totalCount / pageSize == 0) ? totalPageCount : totalPageCount + 1;
}
public void setTotalPageCount(int totalPageCount) {
this.totalPageCount = totalPageCount;
}
public int getPageNow() {
return pageNow;
}
public void setPageNow(int pageNow) {
this.pageNow = pageNow;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
// 取得选择记录的初始位置
public int getStartPos() {
return (pageNow - 1) * pageSize;
}
public void setStartPos(int startPos) {
this.startPos = startPos;
}
// 判断是否有第一页
public boolean isHasFrist() {
return (pageNow == 1) ? false : true;
}
public void setHasFrist(boolean hasFrist) {
this.hasFrist = hasFrist;
}
// 如果有首页就有前一页
public boolean isHasPre() {
return isHasFrist() ? true : false;
}
public void setHasPre(boolean hasPre) {
this.hasPre = hasPre;
}
// 如果有尾页就有下一页
public boolean isHasNext() {
return isHasNext() ? true : false;
}
public void setHasNext(boolean hasNext) {
this.hasNext = hasNext;
}
// 判断是否有尾页
public boolean isHasLast() {
return (pageNow == getTotalCount()) ? false : true;
}
public void setHasLast(boolean hasLast) {
this.hasLast = hasLast;
}
@Override
public String toString() {
return "Page [pageNow=" + pageNow + ", pageSize=" + pageSize + ", totalCount=" + totalCount
+ ", totalPageCount=" + totalPageCount + ", startPos=" + startPos + ", hasFrist=" + hasFrist
+ ", hasPre=" + hasPre + ", hasNext=" + hasNext + ", hasLast=" + hasLast + "]";
}
}
前端jsp
<ul>
<li><font size="2">共 ${page.totalPageCount} 页</font></li>
<li><font size="2">第 ${page.pageNow} 页</font></li>
<li><a href="cp.do?pageNow=1">首页</a></li>
<li><c:choose>
<c:when test="${page.pageNow - 1 > 0}">
<a href="cp.do?pageNow=${page.pageNow - 1}">上一页</a>
</c:when>
<c:when test="${page.pageNow - 1 <= 0}">
<a href="cp.do?pageNow=1">上一页</a>
</c:when>
</c:choose></li>
<li><c:choose>
<c:when test="${page.totalPageCount==0}">
<a href="cp.do?pageNow=${page.pageNow}">下一页</a>
</c:when>
<c:when test="${page.pageNow + 1 < page.totalPageCount}">
<a href="cp.do?pageNow=${page.pageNow + 1}">下一页</a>
</c:when>
<c:when test="${page.pageNow + 1 >= page.totalPageCount}">
<a href="cp.do?pageNow=${page.totalPageCount}">下一页</a>
</c:when>
</c:choose></li>
<li><c:choose>
<c:when test="${page.totalPageCount==0}">
<a href="cp.do?pageNow=${page.pageNow}">尾页</a>
</c:when>
<c:otherwise>
<a href="cp.do?pageNow=${page.totalPageCount}">尾页</a>
</c:otherwise>
</c:choose></li>
</ul>
就ok了
更新一下用用mybaties插件分页
我在controller层做分页处理
public ModelAndView cpsoup(@RequestParam(name="goodstype") String goodstype,@RequestParam(name="pageNum",defaultValue="1")Integer pageNum,ModelAndView mvc){
System.out.println("goodstype: " + goodstype);
PageHelper.startPage(pageNum, 6);
PageInfo<Goods> goods=new PageInfo<Goods>(good.subList(0, good.size()));
System.out.println("good : " + goods);
mvc.setViewName("cpsoup");
mvc.addObject("goods", goods);
return mvc;
}
前端也是一样处理就好啦 ,使用分页差点发现封装比hibernate好用多了