玩转Web之easyui(一)-----easy ui datagird 分页

来源：互联网发布：量化交易python和r 编辑：程序博客网时间：2024/04/30 15:38

easy ui 中数据表格的分页其实是很简单的，分页是在数据表格可以正常显示数据的基础上进行的，在这里给出servlet的代码，其中selectAll()方法是从数据库中提取所有数据，

分页的一种思路是：从数据表中取出所有数据，然后根据分页的要求取出对应的数据。

package thejavabean;import java.io.IOException;import java.io.PrintWriter;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONArray;public class Table_info extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {try {response.setContentType("text/html");response.setCharacterEncoding("UTF-8");PrintWriter out = response.getWriter();String page = request.getParameter("page"); // 当前页数String rows = request.getParameter("rows"); // 每页显示行数  List<Student> allList=selectAll();   //获取所有数据int p=Integer.parseInt(page);    int r=Integer.parseInt(rows);int begin=(p-1)*r;  //当前页开始项int num=begin;int count=r;List<Student> list=new ArrayList();System.out.println();while(count>0&&num<allList.size()){list.add(allList.get(num)); num++;count--;}int total=selectAll().size();String json = "{\"total\":"+total+" , \"rows\":"+JSONArray.fromObject(list).toString()+"}";    response.getWriter().write(json.toString());out.flush();out.close();} catch (SQLException e) {e.printStackTrace();}}    public List<Student> selectAll() throws SQLException{    StudentManage sm=new StudentManage();return sm.selectAll("");        }public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doGet(request, response);}}

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