分頁(yè)功能的代碼就是這樣的，在需要展示列表的頁(yè)面，我們基本都需要加上分頁(yè)功能，如果某天boss想要修改分頁(yè)功能的樣式，我們不能去一個(gè)一個(gè)的改吧。

下邊給大家分享一個(gè)自己封裝的通用分頁(yè)組件。

1. 效果展示

2. 使用方式

1 ）在需要顯示分頁(yè)信息的位置，直接引入pagination.jsp頁(yè)面。

<!-- 分頁(yè)內(nèi)容 --> <%@include file="/WEB-INF/decorators/pagination.jsp" %><!-- 分頁(yè)內(nèi)容結(jié)束 -->

2 ）在java代碼中

Controller層代碼：

@RequiresPermissions("func_vasadmin_userMoneyList")@RequestMapping("/user/money/list")public String list(Model model, ServletRequest request) {  // 獲取所有的查詢條件參數(shù)（為了使用方便，所有查詢條件的參數(shù)命名前綴都是"search_"） Map<String, Object> searchParams = WebUtils.getParametersStartingWith(request, "search_");  // 獲取分頁(yè)頁(yè)碼信息和每頁(yè)條數(shù) int pageNum = PageUtil.getTargetPage(request); int pageSize = PageUtil.getPageSize(request); Page page = new Page(pageSize, pageNum);  // 查詢需要展示的內(nèi)容 List<UserMoney> list = vasMoneyService.getUserMoneyList(page,searchParams);  model.addAttribute("data", list); model.addAttribute("page", page); // 將搜索條件編碼成字符串，用于排序，分頁(yè)的URL model.addAttribute("searchParams", PageUtil.encodeParameterStringWithPrefix(searchParams, "search_"));  return "vasadmin/user_money_list";}

Service層代碼：

public List<UserMoney> getUserMoneyList(Page page, Map<String, Object> searchParams) { // 從map中獲取查詢條件 long userId = (Long) DataConvertUtil.data2(searchParams.get("userId"), DataConvertUtil.DataType.LONG); long minMoney = (Long) DataConvertUtil.data2( searchParams.get("minMoney"), DataConvertUtil.DataType.LONG); long maxMoney = (Long) DataConvertUtil.data2( searchParams.get("maxMoney"), DataConvertUtil.DataType.LONG); // 查詢總條數(shù) int totleElements = vasMoneyDao.getUserMoneyListCount( DataBaseName.DB_TATA_MONEY, userId, minMoney, maxMoney); // 設(shè)置總條數(shù) page.setTotleElements(totleElements); // 查詢需要展示的數(shù)據(jù) return vasMoneyDao.getUserMoneyList(DataBaseName.DB_TATA_MONEY, userId, minMoney, maxMoney, page.getStartNum(), page.getEndNum());}

**每次需要分頁(yè)，只需要操作上邊這兩步，是不是很簡(jiǎn)單啊~~。**接下來(lái)，給大家貼出封裝的pagination.jsp代碼，和其它的一些幫助類的代碼。

**3. 代碼示例 **

pagination.jsp （封裝的通用分頁(yè)代碼）

<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %><!-- 分頁(yè)信息 --><div> <div> 每次顯示 <select onchange="self.location.href=options[selectedIndex].value"> <option value="?pageNum=1&pageSize=10&${searchParams}" <c:if test="${page.pageSize eq "10" }">selected</c:if>>10</option> <option value="?pageNum=1&pageSize=50&${searchParams}" <c:if test="${page.pageSize eq "50" }">selected</c:if>>50</option> <option value="?pageNum=1&pageSize=100&${searchParams}" <c:if test="${page.pageSize eq "100" }">selected</c:if>>100</option> </select> 條 </div> <div> <ul> <li><a href="#" >共 ${page.totlePages} 頁(yè)，${page.totleElements} 條</a></li> <c:if test="${page.hasPrevious == false}"> <li><a href="#" >首頁(yè)</a></li> <li><a href="#" >上一頁(yè)</a></li> </c:if> <c:if test="${page.hasPrevious == true}"> <li><a href="?pageNum=1&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" >首頁(yè)</a></li> <li><a href="?pageNum=${page.prePage}&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" >上一頁(yè)</a></li> </c:if> <c:forEach var="i" begin="${page.begin}" end="${page.end}"> <c:choose> <c:when test="${i == page.pageNum}"> <li><a href="?pageNum=${i}&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" rel="external nofollow" >${i}</a></li> </c:when> <c:otherwise> <li><a href="?pageNum=${i}&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" rel="external nofollow" >${i}</a></li> </c:otherwise> </c:choose> </c:forEach> <c:if test="${page.hasNext == true}"> <li><a href="?pageNum=${page.nextPage}&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" >下一頁(yè)</a></li> <li><a href="?pageNum=${page.totlePages}&pageSize=${page.pageSize}&${searchParams}" rel="external nofollow" >末頁(yè)</a></li> </c:if> <c:if test="${page.hasNext == false}"> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一頁(yè)</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >末頁(yè)</a></li> </c:if> </ul> </div></div><!-- 分頁(yè)信息結(jié)束 -->

Page.java （分頁(yè)信息類）

public class Page implements Serializable { private static final long serialVersionUID = 1L;  public Page(int pageSize, int pageNum) { if(pageSize > 0 ){ this.pageSize = pageSize; } if(pageNum > 0){ this.pageNum = pageNum; } } /** * 初始化各個(gè)值 */ public void initValue(){ // 計(jì)算總共有多少頁(yè) totlePages = (int)Math.ceil(totleElements * 1.0 / pageSize);  if(totlePages == 0){ totlePages = 1; }  // 頁(yè)碼矯正 if(pageNum <= 0){ pageNum = 1; } if(pageNum > totlePages){ pageNum = totlePages; }  // 是否有上一頁(yè)和首頁(yè) if(pageNum > 1){ hasPrevious = true; prePage = pageNum - 1; }  // 是否有下一頁(yè)和尾頁(yè) if(totlePages > pageNum){ hasNext = true; nextPage = pageNum + 1; }  // 分頁(yè)頁(yè)碼開(kāi)始數(shù)值 begin = Math.max(1, pageNum - paginationSize/2);  // 分頁(yè)頁(yè)碼結(jié)束數(shù)值 end = Math.min(begin + (paginationSize - 1), totlePages); }  /** * 分頁(yè)下標(biāo)最多顯示多少頁(yè) */ private int paginationSize = 10; /** * 頁(yè)碼開(kāi)始 */ private int begin = 1; /** * 頁(yè)碼結(jié)束 */ private int end = 1; /** * 每頁(yè)顯示多少條 */ private int pageSize = 15; /** * 當(dāng)前頁(yè)碼 */ private int pageNum = 1; /** * 是否有下一頁(yè) */ private boolean hasNext = false; /** * 是否有上一頁(yè) */ private boolean hasPrevious = false; /** * 下一頁(yè)的頁(yè)碼 */ private int nextPage; /** * 上一頁(yè)的頁(yè)碼 */ private int prePage; /** * 總頁(yè)數(shù) */ private int totlePages = 1; /** * 總條數(shù) */ private int totleElements = 0;  public static int maxNum = 999999; public int getPaginationSize() { return paginationSize; } public void setPaginationSize(int paginationSize) { this.paginationSize = paginationSize; } public int getBegin() { return begin; } public void setBegin(int begin) { this.begin = begin; } public int getEnd() { return end; } public void setEnd(int end) { this.end = end; } public int getPageSize() { return pageSize; } public void setPageSize(int pageSize) { this.pageSize = pageSize; } public int getPageNum() { return pageNum; } public void setPageNum(int pageNum) { this.pageNum = pageNum; } public boolean isHasNext() { return hasNext; } public void setHasNext(boolean hasNext) { this.hasNext = hasNext; } public boolean isHasPrevious() { return hasPrevious; } public void setHasPrevious(boolean hasPrevious) { this.hasPrevious = hasPrevious; } public int getNextPage() { return nextPage; } public void setNextPage(int nextPage) { this.nextPage = nextPage; } public int getPrePage() { return prePage; } public void setPrePage(int prePage) { this.prePage = prePage; } public int getTotlePages() { return totlePages; } public void setTotlePages(int totlePages) { this.totlePages = totlePages; } public int getTotleElements() { return totleElements; } public void setTotleElements(int totleElements) { this.totleElements = totleElements; // 知道總條數(shù)之后，初始化一下其它值 initValue(); }  public static void main(String[] args) { System.out.println(Math.min(1, 2)); }  /** * 從第幾條開(kāi)始查詢 * @return */ public int getStartNum(){ return (pageNum -1) * pageSize + 1; }  /** * 到第幾條結(jié)束 * @return */ public int getEndNum(){ return pageNum * pageSize; }}

PageUtil.java （分頁(yè)輔助類）

public class PageUtil implements Serializable { private static final long serialVersionUID = 1L;  /** * 獲取目標(biāo)頁(yè)碼 * @return */ public static int getTargetPage(ServletRequest request){  int pageNum = 0;  String pageNumStr = request.getParameter("pageNum");  if(StringUtils.isNotBlank(pageNumStr)){ try{ pageNum = Integer.valueOf(pageNumStr); }catch(Exception e){ pageNum = 0; } }  return pageNum; }  /** * 獲取每頁(yè)條數(shù) * @return */ public static int getPageSize(ServletRequest request){  int pageSize = 0;  String pageSizeStr = request.getParameter("pageSize");  if(StringUtils.isNotBlank(pageSizeStr)){ try{ pageSize = Integer.valueOf(pageSizeStr); }catch(Exception e){ pageSize = 0; } }  return pageSize; }  /** * 將Map中的查詢條件，加上前綴，以&拼接 * @param map * @param prefix 每個(gè)參數(shù)的前綴 * @return */ public static String encodeParameterStringWithPrefix(Map<String,Object> map, String prefix){  if(null == map || map.isEmpty()){ return ""; }  StringBuffer sb = new StringBuffer();  Iterator<Map.Entry<String,Object>> entries = map.entrySet().iterator();  while (entries.hasNext()) {  if(StringUtils.isNotEmpty(sb.toString())){ sb.append("&"); }  Map.Entry<String,Object> entry = entries.next();  sb.append(prefix); sb.append(entry.getKey()); sb.append("="); sb.append(entry.getValue());  }   return sb.toString();  }}

jsp頁(yè)面中查詢條件參數(shù)編寫(xiě)示例如下：

<!-- 查詢條件 --><div> <form action="${ctx }/vasadmin/user/money/list" method="get"> <div> <input type="text" name="search_userId" value="${param.search_userId }" placeholder="用戶ID" onkeyup="this.value=this.value.replace(/\D/g,"")" onafterpaste="this.value=this.value.replace(/\D/g,"")"> </div> <div> <input type="text" name="search_minMoney" value="${param.search_minMoney }" placeholder="最小余額" onkeyup="this.value=this.value.replace(/\D/g,"")" onafterpaste="this.value=this.value.replace(/\D/g,"")"> </div> <div> <input type="text" name="search_maxMoney" value="${param.search_maxMoney }" placeholder="最大余額" onkeyup="this.value=this.value.replace(/\D/g,"")" onafterpaste="this.value=this.value.replace(/\D/g,"")"> </div> <div> <button type="submit"> <span></span> 搜索 </button> </div> </form></div><!-- /查詢條件 -->

源碼下載地址：分頁(yè)源碼

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持。