Servlet+AJAX+jsp 实现分页查询 两个div模块的独立局部刷新

成功界面如下：

第一个水量记录报表

第二个是雨量记录报表

当点击水量记录报表到第三页

当点击雨量记录报表到第二页  相互不影响

 

PageUtil.java

package cn.com.jdbc;

public class PageUtil {
	private Integer currentPage;// 当前页
	private Integer prePage;// 上一页
	private Integer nextPage;// 下一页
	private Integer lastPage;// 尾页
	private Integer pageSize;// 每页显示的条数
	private Integer counter;// 总数据

	public  PageUtil(String currentPage, Integer pageSize, Integer counter) {
		if (currentPage == null||"".equals(currentPage)) {
			// 如果当前页的页面是空值的话，当前页赋值为1
			currentPage = "1";
		}
		// 把当前页数传递过去
		this.currentPage = Integer.parseInt(currentPage);
		// 求总页数
		this.lastPage = counter / pageSize;
		// 如果总条数不能整除每页显示的条数的时候，就+1；例如93/10=9;93%10=3;还有三条数据要做一页，总共10页；
		if (counter % pageSize != 0) {

			this.lastPage = this.lastPage + 1;
		}

		// 把上一页传递过去
		this.prePage = (this.currentPage == 1) ? this.currentPage
				: this.currentPage - 1;
		// 把下一页传递过去
		this.nextPage = (this.currentPage == this.lastPage) ? this.currentPage
				: this.currentPage + 1;
	}

	public Integer getCurrentPage() {
		return currentPage;
	}

	public Integer getPrePage() {
		return prePage;
	}

	public void setPrePage(Integer prePage) {
		this.prePage = prePage;
	}

	public Integer getNextPage() {
		return nextPage;
	}

	public void setNextPage(Integer nextPage) {
		this.nextPage = nextPage;
	}

	public Integer getLastPage() {
		return lastPage;
	}

	public void setLastPage(Integer lastPage) {
		this.lastPage = lastPage;
	}

	public Integer getPageSize() {
		return pageSize;
	}

	public void setPageSize(Integer pageSize) {
		this.pageSize = pageSize;
	}

	public Integer getCounter() {
		return counter;
	}

	public void setCounter(Integer counter) {
		this.counter = counter;
	}

	public void setCurrentPage(Integer currentPage) {
		this.currentPage = currentPage;
	}



}

 

水量记录部分代码

PageService.java

package cn.com.condition;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import cn.com.jdbc.JdbcUtils_DBCP;
import cn.com.pack.Water;

public class PageService {
	// 1.写个查询分页的方法
	public static List getPageList(Integer i, Integer j) {
		// 1.1连接数据库
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		List list = new ArrayList();
		Water w = null;
		try {
			conn = JdbcUtils_DBCP.getConnection();
			ps = conn.prepareStatement("select * from water limit ?,?");
			ps.setInt(1, i);
			ps.setInt(2, j);
			rs = ps.executeQuery();
			while (rs.next()) {
				w = new Water(rs.getString(1), rs.getString(2), rs.getString(3));
				list.add(w);
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			JdbcUtils_DBCP.release(conn, ps, rs);
		}

		return list;
	}

	// 2写个数据库总量查询方法
	public static Integer getCounter() {
		// 1.1连接数据库
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		Integer i = 0;
		try {
			conn = JdbcUtils_DBCP.getConnection();
			ps = conn.prepareStatement("select * from water");
			rs = ps.executeQuery();
			while (rs.next()) {

				i++;
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			JdbcUtils_DBCP.release(conn, ps, rs);
		}

		return i;

	}

}

 Water_Page.java

package cn.com.servlet;
import java.io.IOException;
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 com.alibaba.fastjson.JSON;
import cn.com.condition.PageService;
import cn.com.jdbc.PageUtil;
import cn.com.pack.Water;
public class Water_Page extends HttpServlet {
	private PageUtil pageUtils = null;
	final Integer PAGESIZE = 10;

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		String method = request.getParameter("method");
		if ("getPage".equals(method)) {
			getPage(request, response);
		} else if ("changePage".equals(method)) {
			changePage(request, response);
		} else {
			getGooList(request, response);
		}

	}

	private void getPage(HttpServletRequest request,
			HttpServletResponse response) throws IOException {
		response.setContentType("application/json;charset=UTF-8");
		String string = JSON.toJSONString(pageUtils);
		response.getWriter().write(string);
	}

	private void changePage(HttpServletRequest request,
			HttpServletResponse response) throws IOException {
		response.setContentType("application/json;charset=UTF-8");
		List w = null;
		List