4.创建FindServlet类
doGet()方法对分页请求进行处理。
package form;
import java.io.*;
import com.BookDao;
import com.BookBean;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class FindServlet extends HttpServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
int currPage=1;
if(req.getParameter("page")!=null){
currPage=Integer.parseInt(req.getParameter("page")); }
BookDao dao=new BookDao();
List<BookBean> list=dao.find(currPage);
req.setAttribute("list", list);
int pages;
int count=dao.findCount();
if(count%BookBean.PAGE_SIZE==0){
pages=count/BookBean.PAGE_SIZE;
}
else{pages=count/BookBean.PAGE_SIZE+1;}
StringBuffer sb=new StringBuffer();
for(int i=1;i<=pages;i++){
if(i==currPage){
sb.append("["+i+"]");
}else{
sb.append("<a href='FindServlet?page="+i+"'>"+i+"</a>");
}
sb.append(" ");
}
req.setAttribute("bar",sb.toString());
req.getRequestDispatcher("bookList.jsp").forward(req,resp);
}
5.编写bookList.jsp页面
bookList.jsp获取图书信息并分页显示。
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<%@ page import="java.util.*" %>
<%@ page import="com.BookBean" %>
<%
// 获取图书信息集合
List<BookBean> list = (List<BookBean>)request.getAttribute("list");
// 判断集合是否有效
if (list == null || list.size() < 1) {
out.print("<tr><td bgcolor='#FFFFFF' colspan='5'>没有任何图书信息！</td></tr>");
} else {
// 遍历图书集合中的数据
for (BookBean book : list) {
%>
<tr align="center">
<td bgcolor="#FFFFFF" ><%=book.getId()%></td>
<td bgcolor="#FFFFFF"><%=book.getName()%></td>
<td bgcolor="#FFFFFF"><%=book.getPrice()%></td>
<td bgcolor="#FFFFFF"><%=book.getBookCount()%></td>
<td bgcolor="#FFFFFF"><%=book.getAuthor()%></td>
</tr>
<%}
}%>
<%=request.getAttribute("bar") %>
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