在刚开始翻页的时候，没有混乱。在不同条件下查询之后，在点击翻页就会出现，在之前的页码上继续加的现象，而不是显示第二页：：
checksysdairy2.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<link href="media/css/bootstrap.min.css" rel="stylesheet"
type="text/css" />
<link href="media/css/bootstrap-responsive.min.css" rel="stylesheet"
type="text/css" />
<link href="media/css/font-awesome.min.css" rel="stylesheet"
type="text/css" />
<link href="media/css/style-metro.css" rel="stylesheet" type="text/css" />
<link href="media/css/style.css" rel="stylesheet" type="text/css" />
<link href="media/css/style-responsive.css" rel="stylesheet"
type="text/css" />
<link href="media/css/default.css" rel="stylesheet" type="text/css"
id="style_color" />
<link href="media/css/uniform.default.css" rel="stylesheet"
type="text/css" />
<!-- END GLOBAL MANDATORY STYLES -->
<title>国家安全和案件情报态势感知平台</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<style>
tr:nth-child(odd){
background: #d1d1d1;
}
tr:nth-child(even){
background: #eeeeee;
}
tr:hover {
background: #ffffff;
}
</style>
</head>
<body class="page-header-fixed" style="font-family: 微软雅黑;" onload='PageSystem2.action?ddpage=first&sip=${sessionScope.programlog.ip}&sprogram=${sessionScope.programlog.program}&mintime=${sessionScope.mmt.mintime}&maxtime=${sessionScope.mmt.maxtime}&stype=${sessionScope.mmt.stype}'>
<!-- 包含网页的头 -->
<jsp:include page="header.jsp" />
<!-- BEGIN SAMPLE PORTLET CONFIGURATION MODAL FORM-->
<p id="portlet-config" class="modal hide">
</p>
<p class="container-fluid" style="background-color: white;">
<p class="row-fluid">
<p class="span12">
<p class="row-fluid" style="width: 80%;margin: auto;">
<p class="span12" style="margin-top: 45px">
<p class="portlet box grey tabbable">
<p class="portlet-title">
<p class="caption">
<i class="icon-reorder"></i> <span class="hidden-480">查看日志</span>
</p>
</p>
<p class="portlet-body form">
<p class="tabbable portlet-tabs">
<p style="height: 60px ">
<!-- 查询action -->
<p style="height: 50px;line-height: 50px;">
<form action="checksystemdairy2.action" method="post">
<!-- 时间action -->
<input type="hidden" name="IP" value="${sessionScope.plog.ip}"></input>
<input type="hidden" name="PROGRAM" value="${sessionScope.plog.program}"></input>
<input type="date" style="width:150px;height:25px; margin-left: 10px " name="mintime" value="${sessionScope.mmt.mintime}"></input> ——
<input type="date" style="width:150px ;height:25px;" name="maxtime" value="${sessionScope.mmt.maxtime}"></input>
<!-- 时间end -->
<select style="margin-left: 50px;height:30px;" name="stype">
<option value="${sessionScope.mmt.stype}">${sessionScope.mmt.stypename}</option>
<option value="allstyle">全部类型</option>
<option value="standard">标准</option>
<option value="warning">警告</option>
<option value="error">错误</option>
<option value="unknown">未知</option>
</select>
<input type="submit" value=" 查询" style="height: 30px;width: 80px;background-color: gray;color: white;border: gray 1px solid;margin-bottom: 10px"/>
</form>
</p>
<!--查询框end -->
</p>
<table style="width: 100%" >
<tr>
<td align="center"><p style="background: #ffffff;font-size:20px; font-family:微软雅黑; height:40px;">类型</p></td>
<td align="center"><p style="background: #ffffff;font-size:20px; font-family:微软雅黑; height:40px;">时间</p></td>
<td align="center"><p style="background: #ffffff;font-size:20px; font-family:微软雅黑; height:40px;">内容</p></td>
</tr>
<c:forEach items="${sessionScope.programlogls}" var="programlogls">
<tr>
<td align="center" style="width:200px"><p style="font-size:17px; font-family:微软雅黑; height:40px;">${programlogls.type}</p></td>
<td align="center" style="width:300px"><p style=" font-size:17px; font-family:微软雅黑; height:40px;">${programlogls.datetime}</p></td>
<td align="center"><p style="font-size:17px; font-family:微软雅黑; height:40px; width:100%">${programlogls.content}</p></td>
</tr>
</c:forEach>
</table>
<p class="pagination pagination-right"><ul>
<li><a href="PageSystem2.action?ddpage=first&sip=${sessionScope.plog.ip}&sprogram=${sessionScope.plog.program}&mintime=${sessionScope.mmt.mintime}&maxtime=${sessionScope.mmt.maxtime}&stype=${sessionScope.mmt.stype}">首页</a></li>
<li><a href="PageSystem2.action?ddpage=previous&sip=${sessionScope.plog.ip}&sprogram=${sessionScope.plog.program}&mintime=${sessionScope.mmt.mintime}&maxtime=${sessionScope.mmt.maxtime}&stype=${sessionScope.mmt.stype}">上一页</a></li>
<li><span style="margin-top: 0px" ></span></li>
<li><a href="PageSystem2.action?ddpage=next&sip=${sessionScope.plog.ip}&sprogram=${sessionScope.plog.program}&mintime=${sessionScope.mmt.mintime}&maxtime=${sessionScope.mmt.maxtime}&stype=${sessionScope.mmt.stype}">下一页</a></li>
<li><a href="PageSystem2.action?ddpage=last&sip=${sessionScope.plog.ip}&sprogram=${sessionScope.plog.program}&mintime=${sessionScope.mmt.mintime}&maxtime=${sessionScope.mmt.maxtime}&stype=${sessionScope.mmt.stype}">尾页</a></li>
</ul>
</p>
</p>
</p>
</p>
</p>
</body>
</html>checksystemdairy2.action
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
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 tools.PageSystemstatue;
import dao.SystemstatusDao;
import dao.impl.SystemstatusDaoImpl;
import entity.ProgramLog;
import entity.PublicPage;
import entity.conditionMMT;
@WebServlet(name = "checksystemdairyServlet2", urlPatterns = { "/checksystemdairy2.action" })
public class checksystemdairyServlet2 extends HttpServlet {
// 新建业务层对象
SystemstatusDaoImpl sys = new SystemstatusDaoImpl();
// 新建通用分页类对象
PageSystemstatue ps = new PageSystemstatue();
/**
* Constructor of the object.
*/
public checksystemdairyServlet2() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
// 存放选中的ip 和 program 保证每一个显示的jsp页面都能拿到 ip和program
String IP = request.getParameter("IP");
String PROGRAM = request.getParameter("PROGRAM");
ProgramLog plog = new ProgramLog();
plog.setIp(IP);
plog.setProgram(PROGRAM);
String mintime = request.getParameter("mintime");
String maxtime = request.getParameter("maxtime");
String stype = request.getParameter("stype");
if (stype.equals("allstyle")) {
String typeall = null;
if (stype.equals("allstyle")) {
typeall = "全部类型";
}
SystemstatusDao ss = new SystemstatusDaoImpl();
ProgramLog programlog = null;
List<ProgramLog> programlogl = new ArrayList<ProgramLog>();
List<ProgramLog> programlogls = new ArrayList<ProgramLog>();
PublicPage pp = new PublicPage();
conditionMMT mmt = new conditionMMT();
mmt.setMintime(mintime);
mmt.setMaxtime(maxtime);
mmt.setStype(stype);
mmt.setStypename(typeall);
// 接受翻页的指令
String param = request.getParameter("ddpage");
int count;
try {
// 查询符合条件的数据的总条数
count = sys.allgetCount(IP, PROGRAM, mintime, maxtime);
// 计算最后一页的页码
int lastPage = ps.getPagesCount(count, 30);
// 计算应该显示的页码
int pageNo = ps.getFenyePageNo(param, lastPage);
pp.setLastPage(lastPage);
pp.setPageNo(pageNo);
programlogl = ss.allgetSystemCondition(IP, PROGRAM, mintime,
maxtime, pageNo, 30);
for (int i = 0; i < programlogl.size(); i++) {
String type = null;
String type1 = null;
String datetime = null;
String content = null;
String datetime1 = null;
String ip = null;
String program = null;
programlog = new ProgramLog();
type1 = programlogl.get(i).getType();
if (type1.equals("standard")) {
type = "标准";
}
if (type1.equals("warning")) {
type = "警告";
}
if (type1.equals("error")) {
type = "错误";
}
if (type1.equals("unknown")) {
type = "未知";
}
datetime1 = programlogl.get(i).getDatetime();
datetime = datetime1.substring(0, 19);
content = programlogl.get(i).getContent();
ip = programlogl.get(i).getIp();
program = programlogl.get(i).getProgram();
// 存入programlog对象！
programlog.setType(type);
programlog.setDatetime(datetime);
programlog.setContent(content);
programlog.setIp(ip);
programlog.setProgram(program);
// 将对象存入programlogls集合！
programlogls.add(programlog);
}
} catch (Exception e) {
e.printStackTrace();
}
// 看看每次传到 2.jsp页面的是什么？？ 为什么在之前的基础上，加页数！
System.out.println("…………………………………………………………………………………………………………………………………………………………");
System.out.println("最后页数:::All "+pp.getLastPage());
System.out.println("当前页数::All "+pp.getPageNo());
System.out.println("小日期:::All "+mmt.getMintime());
System.out.println("大日期:::All "+mmt.getMaxtime());
System.out.println("类型::All "+mmt.getStype());
System.out.println("ip:::All "+plog.getIp());
System.out.println("program::All "+plog.getProgram());
request.getSession().setAttribute("pp", pp);
request.getSession().setAttribute("mmt", mmt);
request.getSession().setAttribute("programlogls", programlogls);
request.getSession().setAttribute("programlog", programlog);
request.getSession().setAttribute("plog", plog);
request.getRequestDispatcher("checksysdairy2.jsp").forward(request,response);
out.flush();
out.close();
} else {
SystemstatusDao ss = new SystemstatusDaoImpl();
ProgramLog programlog = null;
List<ProgramLog> programlogl = new ArrayList<ProgramLog>();
List<ProgramLog> programlogls = new ArrayList<ProgramLog>();
PublicPage pp = new PublicPage();
conditionMMT mmt = new conditionMMT();
mmt.setMintime(mintime);
mmt.setMaxtime(maxtime);
mmt.setStype(stype);
// 接受翻页的指令
String param = request.getParameter("ddpage");
int count;
try {
// 查询符合条件的数据的总条数
count = sys.getCount2(IP, PROGRAM, mintime, maxtime, stype);
if (count == 0) {
String style = null;
if (stype.equals("standard")) {
style = "标准";
}
if (stype.equals("warning")) {
style = "警告";
}
if (stype.equals("error")) {
style = "错误";
}
if (stype.equals("unknown")) {
style = "未知";
}
mmt.setStypename(style);
//计算最后一页的页码
int lastPage=ps.getPagesCount(count,30);
//计算应该显示的页码
int pageNo1=ps.getFenyePageNoo(param,lastPage);
int pageNo=pageNo1+1;
pp.setLastPage(lastPage);
pp.setPageNo(pageNo1);
programlogl = ss.getSystemCondition(IP, PROGRAM, mintime,
maxtime, stype, pageNo, 30);
} else {
// 计算最后一页的页码
int lastPage = ps.getPagesCount(count, 30);
// 计算应该显示的页码
int pageNo = ps.getFenyePageNo(param, lastPage);
pp.setLastPage(lastPage);
pp.setPageNo(pageNo);
programlogl = ss.getSystemCondition(IP, PROGRAM, mintime,
maxtime, stype, pageNo, 30);
for (int i = 0; i < programlogl.size(); i++) {
String type = null;
String type1 = null;
String datetime = null;
String content = null;
String datetime1 = null;
String ip = null;
String program = null;
programlog = new ProgramLog();
type1 = programlogl.get(i).getType();
if (type1.equals("standard")) {
type = "标准";
}
if (type1.equals("warning")) {
type = "警告";
}
if (type1.equals("error")) {
type = "错误";
}
if (type1.equals("unknown")) {
type = "未知";
}
mmt.setStypename(type);
datetime1 = programlogl.get(i).getDatetime();
datetime = datetime1.substring(0, 19);
content = programlogl.get(i).getContent();
ip = programlogl.get(i).getIp();
program = programlogl.get(i).getProgram();
// 存入programlog对象！
programlog.setType(type);
programlog.setDatetime(datetime);
programlog.setContent(content);
programlog.setIp(ip);
programlog.setProgram(program);
// 将对象存入programlogls集合！
programlogls.add(programlog);
}
}
} catch (Exception e) {
e.printStackTrace();
}
request.getSession().setAttribute("pp", pp);
request.getSession().setAttribute("mmt", mmt);
request.getSession().setAttribute("programlogls", programlogls);
request.getSession().setAttribute("programlog", programlog);
request.getSession().setAttribute("plog", plog);
request.getRequestDispatcher("checksysdairy2.jsp").forward(request,response);
out.flush();
out.close();
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doGet(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}PageSystem2.action
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
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 tools.PageSystemstatue;
import dao.SystemstatusDao;
import dao.impl.SystemstatusDaoImpl;
import entity.ProgramLog;
import entity.PublicPage;
import entity.conditionMMT;
@WebServlet(name = "PageSystemServlet2", urlPatterns = { "/PageSystem2.action" })
public class PageSystemServlet2 extends HttpServlet {
//新建业务层对象
SystemstatusDaoImpl sys=new SystemstatusDaoImpl();
//新建通用分页类对象
PageSystemstatue ps=new PageSystemstatue();
/**
* Constructor of the object.
*/
public PageSystemServlet2() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String sip = request.getParameter("sip");
String sprogram = request.getParameter("sprogram");
String mintime=request.getParameter("mintime");
String maxtime=request.getParameter("maxtime");
String stype=request.getParameter("stype");
if(stype.equals("allstyle")){
String typeall = null;
if (stype.equals("allstyle")) {
typeall = "全部类型";
}
SystemstatusDao ss=new SystemstatusDaoImpl();
ProgramLog programlog= null;
List<ProgramLog> programlogl=new ArrayList<ProgramLog>();
List<ProgramLog> programlogls=new ArrayList<ProgramLog>();
PublicPage pp = new PublicPage();
conditionMMT mmt = new conditionMMT();
mmt.setMintime(mintime);
mmt.setMaxtime(maxtime);
mmt.setStype(stype);
mmt.setStypename(typeall);
//接受翻页的指令
String param=request.getParameter("ddpage");
int count;
try {
//查询符合条件的数据的总条数
count = sys.allgetCount(sip,sprogram,mintime,maxtime);
//计算最后一页的页码
int lastPage=ps.getPagesCount(count,30);
//计算应该显示的页码
int pageNo=ps.getFenyePageNo(param,lastPage);
pp.setLastPage(lastPage);
pp.setPageNo(pageNo);
programlogl=ss.allgetSystemCondition(sip,sprogram,mintime,maxtime,pageNo,30);
for(int i=0;i<programlogl.size();i++){
String type=null;
String type1=null;
String datetime=null;
String content=null;
String datetime1=null;
String ip=null;
String program=null;
programlog = new ProgramLog();
type1 = programlogl.get(i).getType();
if(type1.equals("standard")){
type="标准";
}
if(type1.equals("warning")){
type="警告";
}
if(type1.equals("error")){
type="错误";
}
if(type1.equals("unknown")){
type="未知";
}
datetime1 =programlogl.get(i).getDatetime();
datetime = datetime1.substring(0, 19);
content = programlogl.get(i).getContent();
ip = programlogl.get(i).getIp();
program = programlogl.get(i).getProgram();
//存入programlog对象！
programlog.setType(type);
programlog.setDatetime(datetime);
programlog.setContent(content);
programlog.setIp(ip);
programlog.setProgram(program);
//将对象存入programlogls集合！
programlogls.add(programlog);
}
} catch (Exception e) {
e.printStackTrace();
}
request.getSession().setAttribute("pp", pp);
request.getSession().setAttribute("mmt", mmt);
request.getSession().setAttribute("programlogls", programlogls);
request.getSession().setAttribute("programlog", programlog);
request.getRequestDispatcher("checksysdairy2.jsp").forward(request, response);
out.flush();
out.close();
}else{
String nametype=null;
if(stype.equals("standard")){
nametype="标准";
}
if(stype.equals("warning")){
nametype="警告";
}
if(stype.equals("error")){
nametype="错误";
}
if(stype.equals("unknown")){
nametype="未知";
}
SystemstatusDao ss=new SystemstatusDaoImpl();
ProgramLog programlog= null;
conditionMMT mmt = new conditionMMT();
mmt.setMintime(mintime);
mmt.setMaxtime(maxtime);
mmt.setStype(stype);
mmt.setStypename(nametype);
List<ProgramLog> programlogl=new ArrayList<ProgramLog>();
List<ProgramLog> programlogls=new ArrayList<ProgramLog>();
PublicPage pp = new PublicPage();
//接受翻页的指令0
String param=request.getParameter("ddpage");
int count;
try {
//查询符合条件的数据的总条数
count = sys.getCount2(sip,sprogram,mintime,maxtime,stype);
if(count==0){
//计算最后一页的页码
int lastPage=ps.getPagesCount(count,30);
//计算应该显示的页码
int pageNo1=ps.getFenyePageNoo(param,lastPage);
int pageNo=pageNo1+1;
pp.setLastPage(lastPage);
pp.setPageNo(pageNo1);
programlogl=ss.getSystemCondition(sip,sprogram,mintime,maxtime,stype,pageNo,30);
}else{
//计算最后一页的页码
int lastPage=ps.getPagesCount(count,30);
//计算应该显示的页码
int pageNo=ps.getFenyePageNo(param,lastPage);
pp.setLastPage(lastPage);
pp.setPageNo(pageNo);
programlogl=ss.getSystemCondition(sip,sprogram,mintime,maxtime,stype,pageNo,30);
}
for(int i=0;i<programlogl.size();i++){
String type=null;
String type1=null;
String datetime=null;
String content=null;
String datetime1=null;
String ip=null;
String program=null;
programlog = new ProgramLog();
type1 = programlogl.get(i).getType();
if(type1.equals("standard")){
type="标准";
}
if(type1.equals("warning")){
type="警告";
}
if(type1.equals("error")){
type="错误";
}
if(type1.equals("unknown")){
type="未知";
}
datetime1 =programlogl.get(i).getDatetime();
datetime = datetime1.substring(0, 19);
content = programlogl.get(i).getContent();
ip = programlogl.get(i).getIp();
program = programlogl.get(i).getProgram();
//存入programlog对象！
programlog.setType(type);
programlog.setDatetime(datetime);
programlog.setContent(content);
programlog.setIp(ip);
programlog.setProgram(program);
//将对象存入programlogls集合！
programlogls.add(programlog);
}
} catch (Exception e) {
e.printStackTrace();
}
request.getSession().setAttribute("mmt", mmt);
request.getSession().setAttribute("pp", pp);
request.getSession().setAttribute("programlogls", programlogls);
request.getSession().setAttribute("programlog", programlog);
request.getRequestDispatcher("checksysdairy2.jsp").forward(request, response);
out.flush();
out.close();
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doGet(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}翻页的方法：：
package tools;
public class PageSystemstatue {
private int totalPages;
public int getPagesCount(int count,int size) {
// TODO Auto-generated method stub
int totalCount=count;
totalPages = totalCount % size == 0 ? totalCount / size : totalCount
/ size + 1;
return totalPages;
}
private int currentPageNo;
public int getFenyePageNo(String param,int lastPage) {
if ("first".equals(param) || null == param) {
currentPageNo = 1;
} else if ("next".equals(param)) {
if (currentPageNo < lastPage) {
currentPageNo++;
}
} else if ("previous".equals(param)) {
if (currentPageNo > 1) {
currentPageNo--;
}
} else if ("last".equals(param)) {
currentPageNo = lastPage;
}
return currentPageNo;
}
private int currentPageNoo;
public int getFenyePageNoo(String param, int lastPage) {
if ("first".equals(param) || null == param) {
currentPageNoo = 0;
} else if ("next".equals(param)) {
if (currentPageNoo < lastPage) {
currentPageNoo = 0;
}
} else if ("previous".equals(param)) {
if (currentPageNoo > 1) {
currentPageNoo = 0;
}
} else if ("last".equals(param)) {
currentPageNoo = 0;
}
return currentPageNoo;
}
}
![[Web front-end] Démarrage rapide de Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
C'est trop long et vous ne l'avez pas encore formaté. . . . . . . . .
C'est trop long à regarder, il suffit de poster le code logique de la clé
Trop long... ce n'est pas ainsi que cette plateforme est utilisée.
Vous seul comprenez votre code ~ déboguez-le lentement