javaweb(ajax实现分页)

首先我们要用三层架构搭建一个底层然后在jsp上写上下面的代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>









	
		
		
		
		
			首页
			上一页
			下一页
			末页
		
	

并且我们需要一个实现类也就是servlet

package servlet;

import java.io.IOException;

import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import bzi.Bzi;
import bzi.UIbzi;
import entity.Goods;
public class PageServlet extends HttpServlet{
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		doPost(req, resp);
	}
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		req.setCharacterEncoding("utf-8");
		resp.setContentType("text/html; charset=UTF-8");
		
		PrintWriter out=resp.getWriter();
		
		int pageIndex=1;
		int pageSize=5;
		
		//接收pid
		String pid=req.getParameter("pid");
		if(pid!=null) {
			pageIndex=Integer.parseInt(pid);
		}
		
		//调用biz层的分页方法
		UIbzi igb=new Bzi();
		//商品集合
		List ls=igb.getAll(pageIndex, pageSize);
		//获取最大页码
		int max=igb.getMax("goods", pageSize);
		//把集合转为String
		String str=ls.toString();
		//把响应输送到客户端
		out.print(str+"*"+max);//特殊字符做拼接
		out.flush();
		out.close();
	}
}

然后不出意外的话就可以了记住数据库必须有数据不然上面试没有东西的