新闻列表的分页查询java代码实现

本文实例为大家讲解了新闻列表分页查询的java代码，供大家参考，具体内容如下

package .ibeifeng.test;
//创建新闻测试类
public class neTest {
private long id;
private String title;
private String content;
private String author;
 
public neTest() {
  super();
}
 
public neTest(long id, String title, String content, String author) {
  this.id = id;
  this.title = title;
  this.content = content;
  this.author = author;
}
 
public long getId() {
  return id;
}
 
public void setId(long id) {
  this.id = id;
}
 
public String getTitle() {
  return title;
}
 
public void setTitle(String title) {
  this.title = title;
}
 
public String getContent() {
  return content;
}
 
public void setContent(String content) {
  this.content = content;
}
 
public String getAuthor() {
  return author;
}
 
public void setAuthor(String author) {
  this.author = author;
}
 
@Override
public String toString() {
  return "neTest [id=" + id + ", title=" + title + ", content=" + content
   + ", author=" + author + "]";
}
 
 
}
2.开始查询
<%@ page language="java" import="java.util." pageEncoding="utf-8"%>
<%@ page import=".ibeifeng.test.neTest"%>
<%
  String path = request.getContextPath();
  String basePath = request.getScheme() + "://"
   + request.getServerName() + ":" + request.getServerPort()
   + path + "/";
%>
<%
  List list = ne ArrayList(107);//设定新闻行数为107行
  for (int i = 1; i <= 107; i++) {//list中添加新闻
 neTest nes = ne neTest(0L + i, i + "里约奥运", "马龙获得金牌-世界乒坛第五位男子“大满贯”得主", "福音");
 
 list.add(nes);
  }//end of for...添加107条数据到集合中
 //int pageIndex=10;
  int iTitleIndex = list.size();//获取集合下表标
  int iTitlePages = iTitleIndex / 10
   + (iTitleIndex % 10 == 0 ? 0 : 1);//获取页数的总数
  int ipage = 4;//开始的页数
   
  String str = request.getParameter("page");
  if (str != null && !str.trim().equals("")) {
 int nePage = Integer.valueOf(str);
 
 if (nePage < 1) {
   ipage = 1;
 } else if (nePage > iTitlePages) {
   ipage = iTitlePages;
 } else {
   ipage = nePage;
 }
  }
  //创建一个新的集合（大小每个页面显示的新闻总数） 将107条数据分别存储到其中 
  List listPage = ne ArrayList(10);
  int ipa = 10;//获取循环体的循环次数//一页只有七条数据
  if (ipage == iTitlePages) { //当当前页数为一页时，剩余几行则循环体之执行剩余的行的数次，
 ipa = list.size() - (iTitlePages - 1)  10;
  }
  for (int i = 0; i < ipa; i++) { //i=0;获取前十个数据 第一次循环时ipage=4
 neTest arr = list.get(i + (ipage - 1)  10);
 listPage.add(arr);
  }
%>


  
 
   标题
   作者
   摘要
 
 <%
   for (int i = 0; i < listPage.size(); i++) { //java代码需要用<% %》保护起来否则会被当做eb语句执行
 neTest temp = listPage.get(i);
 %>
 
   <%=temp.getTitle()%>
   <%=temp.getAuthor()%>
   <%=temp.getContent()%>
 
 <%
   }//end of for...
 %>
  
 
  <%
 boolean bFirst = ipage == 1;
 boolean bLast = ipage == iTitlePages ;
  %>
 
  <%
 if (!bFirst) {
  %>
  &toage=11">上一页
  <%
 }
  %>
     
  
  <%
 if (!bLast) {
  %>
  &toage=11">下一页
  <%
 }
  %>第<%=ipage%>页   共<%=iTitlePages%>页