ssm项目-实现分页查询

实现分页查询功能

1.contoller层：

2.service层：

3.serviceImpl：

4.dao层

5.sql映射文件

PageSupport类代码：

package cn.smbms.tools;

public class PageSupport {
	//当前页码-来自于用户输入
	private int currentPageNo = 1;
	
	//总数量（表）
	private int totalCount = 0;
	
	//页面容量
	private int pageSize = 0;
	
	//总页数-totalCount/pageSize（+1）
	private int totalPageCount = 1;

	public int getCurrentPageNo() {
		return currentPageNo;
	}

	public void setCurrentPageNo(int currentPageNo) {
		if(currentPageNo > 0){
			this.currentPageNo = currentPageNo;
		}
	}

	public int getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(int totalCount) {
		if(totalCount > 0){
			this.totalCount = totalCount;
			//设置总页数
			this.setTotalPageCountByRs();
		}
	}
	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		if(pageSize > 0){
			this.pageSize = pageSize;
		}
	}

	public int getTotalPageCount() {
		return totalPageCount;
	}

	public void setTotalPageCount(int totalPageCount) {
		this.totalPageCount = totalPageCount;
	}
	
	public void setTotalPageCountByRs(){
		if(this.totalCount % this.pageSize == 0){
			this.totalPageCount = this.totalCount / this.pageSize;
		}else if(this.totalCount % this.pageSize > 0){
			this.totalPageCount = this.totalCount / this.pageSize +1;
		}else{
			this.totalPageCount = 0;
		}
	}
	
}

jsp部分代码：

<%--引入（导入）rollpage.jsp文件--%>
	<input type="hidden" id="totalPageCount" value="${pageSupport.totalPageCount}"/>
	
	<input type="hidden" name="pageIndex" value="1"/>
	
	<%--相对路径--%>
	<c:import url="../common/rollpage.jsp">
		<c:param name="totalCount" value="${pageSupport.totalCount}"/>
		<c:param name="currentPageNo" value="${pageSupport.currentPageNo}"/>
		<c:param name="totalPageCount" value="${pageSupport.totalPageCount}"/>
	</c:import>

</div>

rollpage.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

 		<div class="page-bar">
			<ul class="page-num-ul clearfix">
				<li>共${param.totalCount }条记录&nbsp;&nbsp; ${param.currentPageNo }/${param.totalPageCount }页</li>
				<c:if test="${param.currentPageNo > 1}">
					<a href="javascript:page_nav(document.forms[0],1);">首页</a>
					<a href="javascript:page_nav(document.forms[0],${param.currentPageNo-1})">上一页</a>
				</c:if>
				<c:if test="${param.currentPageNo < param.totalPageCount }">
					<a href="javascript:page_nav(document.forms[0],${param.currentPageNo+1 });">下一页</a>
					<a href="javascript:page_nav(document.forms[0],${param.totalPageCount });">最后一页</a>
				</c:if>
				&nbsp;&nbsp;
			</ul>

		 <span class="page-go-form"><label>跳转至</label>
	     <input type="text" name="inputPage" id="inputPage" class="page-key" />页
	     <button type="button" class="page-btn" onClick='jump_to(document.forms[0],document.getElementById("inputPage").value)'>GO</button>
		</span>
		</div> <%--class="page-bar" end--%>

<script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/rollpage.js"></script>