快捷導(dǎo)航

Java實現(xiàn)簡單的分頁功能

更新時間：2017年08月07日 11:10:50 作者：LandiYax

這篇文章主要為大家詳細介紹了Java實現(xiàn)簡單的分頁功能，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了Java實現(xiàn)分頁功能的具體代碼，供大家參考，具體內(nèi)容如下

不用根據(jù)改變SQL的形式去查詢;
直接查詢所有的數(shù)據(jù),根據(jù)頁碼自動顯示數(shù)據(jù);

分頁對象

public class PageUtils implements Serializable {

  /**
   * 
   */
  private static final long serialVersionUID = -5247614532234782640L;
  public final static String PAGE = "page";
  public final static String PAGE_NO = "pageno";
  public final static String PAGE_SIZE = "pagesize";

  private long pageSize=10;//每頁顯示記錄數(shù)
  private long firstResult=0;//當(dāng)頁第一條記錄號
  private long totalCount;//總記錄數(shù)
  private long totalPage;//總頁碼
  private long pageNo=1;//當(dāng)前頁碼
  private List<?> sumData;//此集合可用來保存 合計數(shù)據(jù)
  private List<?> data;//查詢結(jié)果

  public long getPageSize() {
    return pageSize;
  }
  public void setPageSize(long pageSize) {
    this.pageSize = pageSize;
  }
  public long getFirstResult() {
    if(pageNo>0){
      firstResult=pageSize * (pageNo -1);
    }else{
      firstResult = 0;
    }
    return firstResult;
  }

  public long getNextPageResult(){
    if(pageNo>0){
      return pageSize*(pageNo-1);
    }else{
      return pageNo;
    }
  }

  public void setFirstResult(long firstResult) {
    this.firstResult = firstResult;
  }
  public long getTotalCount() {
    return totalCount;
  }
  public void setTotalCount(long totalCount) {
    this.totalCount = totalCount;
    totalPage = this.totalCount/pageSize;
    if (totalPage == 0 || totalCount % pageSize != 0) {
      totalPage++;
    }
  }
  public long getTotalPage() {
    return totalPage;
  }
  public void setTotalPage(long totalPage) {
    this.totalPage = totalPage;
  }
  public long getPageNo() {
    return pageNo;
  }
  public void setPageNo(long pageNo) {
    this.pageNo = pageNo;
  }

  public List<?> getData() {
    return data;
  }

  public void setData(List<?> data) {
    this.data = data;
  }

  /**
   * 是否第一頁
   */
  public boolean isFirstPage() {
    return pageNo <= 1;
  }

  /**
   * 是否最后一頁
   */
  public boolean isLastPage() {
    return pageNo >= getTotalPage();
  }

  /**
   * 下一頁頁碼
   */
  public long getNextPage() {
    if (isLastPage()) {
      return pageNo;
    } else {
      return pageNo + 1;
    }
  }

  /**
   * 上一頁頁碼
   */
  public long getPrePage() {
    if (isFirstPage()) {
      return pageNo;
    } else {
      return pageNo - 1;
    }
  }

  public PageUtils(){}

  public PageUtils(long pageNo){
    this.pageNo=pageNo;
  }

  public PageUtils(long pageNo,long pageSize){
    this.pageNo=pageNo;
    this.pageSize = pageSize;
  }

  public List<?> getSumData() {
    return sumData;
  }
  public void setSumData(List<?> sumData) {
    this.sumData = sumData;
  }

}

查詢的數(shù)據(jù)實體

在查詢的實體里添加頁碼和每頁顯示條數(shù)參數(shù);

private int pageSize;  //每頁顯示的條數(shù)
private int pageNo;   //當(dāng)前頁碼
public int getPageSize() {
  return pageSize;
}
public void setPageSize(int pageSize) {
  this.pageSize = pageSize;
}

控制層Controller

@RequestMapping("/list")
public String list(Model model,ChannelValueInfoView input) {
    // input:傳入的參數(shù)為對象

    PageUtils page=new PageUtils();
    //如果傳入的當(dāng)前條數(shù)為0,則賦予值(首次查詢不帶參);
    if(input.getPageSize()==0){
      //當(dāng)前頁碼第一頁
      input.setPageNo(1);
      //每頁顯示條數(shù),當(dāng)前每頁顯示10條數(shù)據(jù);
      input.setPageSize(10);
    }
    page.setPageNo(input.getPageNo());
    page.setPageSize(input.getPageSize());
    //核心分頁代碼
    PageHelper p=new PageHelper();   
    Page<ChannelValueInfoList> l=p.startPage(input.getPageNo(),input.getPageSize());
    //緊跟著的第一個select查詢將會被分頁
    channelValueService.getChannelValueInfoViewList(input);
    model.addAttribute("input", input);
    page.setData(l);
    page.setTotalCount(l.getTotal());
    model.addAttribute("page", page);
    return "index";
  }

頁面處理

//循環(huán)穿過來的PAGE.data數(shù)據(jù)
<tr th:each="ts : ${page.data}">
<td th:text="${ts.channelValueName}"></td>


----------
<form id="content_form" action="/channelValue/list" method="post" >
  <div>
    總數(shù)：<span id="totalCount" th:text="${page.totalCount}">0</span>
  </div>
  <ul class="pagination">
    <li class="disabled">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="onFirst()">首頁</a>
    </li>
    <li class="disabled">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="onPre()">&lt;</a>
    </li>
    <li class="active">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >
        <span id="beginRow" th:text="${page.pageNo}">0</span>
      </a>
    </li>
    <li class="disabled">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="onNext()">&gt;</a>
    </li>
    <li class="disabled">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" onclick="onLast()">尾頁</a>
    </li>
  </ul>
</for  m>


----------

<script>
  function onFirst() {
    onList(1);
  }
  function onPre() {
    var beginRow = parseInt($('#beginRow').html());
    if (beginRow - 1 > 0) {
      onList(beginRow - 1);
    }

  }
  function onNext() {
    var beginRow = parseInt($('#beginRow').html());
    var totalCount = parseInt($('#totalCount').html());
    var pageSize = parseInt($('#pageSize').val());
    if (parseInt(totalCount / pageSize + 1) > beginRow + 1) {
      onList(beginRow+1);
    }
  }
  function onLast() {
    var totalCount = parseInt($('#totalCount').html());
    var pageSize = parseInt($('#pageSize').val());
    onList(parseInt(totalCount / pageSize + 1) - 1);
  }
  function onList(pageNo) {
    if (pageNo == 0)
      pageNo = 1;
    $('#pageNo').val(pageNo);
    $("#content_form").submit();
  }
</script>

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

您可能感興趣的文章: