📄 pagedao.java
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/*
*
*/
package com.jn0801.clientmanage;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import org.hibernate.Query;
import org.hibernate.Session;
public class PageDAO {
public static final String Text = "text";
public static final String Image = "image";
public static final String BbsText = "bbstext";
public static final String BbsImage = "bbsimage";
private HttpServletRequest request;
private int currentpage = 1; // 当前是第几页
private int pagecount = 0; // 一共有多少页
private int rscount = 0; // 一共有多少行
private int pagesize = 20; // 每页有多少行[默认为20行]
public PageDAO(HttpServletRequest request) {
this.request = request;
}
public int getCurrentpage() {
return currentpage;
}
public void setCurrentpage(int currentpage) {
this.currentpage = currentpage;
}
public int getPagecount() {
return pagecount;
}
public void setPagecount(int pagecount) {
this.pagecount = pagecount;
}
public int getPagesize() {
return pagesize;
}
public void setPagesize(int pagesize) {
this.pagesize = pagesize;
}
public int getRscount() {
return rscount;
}
public void setRscount(int rscount) {
this.rscount = rscount;
}
/**
* 获取总页数
*
* @return int
*/
public int getPageCount() {
try {
this.pagecount = ((this.rscount - 1) / this.pagesize) + 1;
} catch (Exception ex) {
this.pagecount = 0;
}
return this.pagecount;
}
/**
* 获取当前页码的设置
*
* @return int
*/
public int getCurrentPage() {
try {
if (this.request.getParameter("currentpage") != null
&& Integer.parseInt(this.request
.getParameter("currentpage")) > 1) {
this.currentpage = Integer.parseInt(this.request
.getParameter("currentpage"));
} else {
this.currentpage = 1;
}
} catch (Exception ex) {
this.currentpage = 1;
}
return this.currentpage;
}
/**
* 分页工具条
*
* @param fileName
* String
* @return String
*/
public String pagetool(String flag) {
StringBuffer str = new StringBuffer();
String temp = "";
String url = this.getParamUrl();
int ProPage = this.currentpage - 1;
int Nextpage = this.currentpage + 1;
// 文字的分页
if (flag.equals(PageDAO.Text)) {
str.append("<form method='post' name='pageform' action=''>");
str
.append("<table width='100%' border='0' cellspacing='0' cellpadding='0'>");
str.append("<tr>");
str.append("<td width='3%'> </td>");
str.append("<td height='26'>");
str.append("共有记录" + this.rscount + "条 ");
str.append("共" + this.pagecount + "页 ");
str.append("每页" + this.pagesize + "记录 ");
str.append("现在" + this.currentpage + "/" + this.pagecount + "页");
str.append("</td><td>");
if (this.currentpage > 1) {
str.append("<a href='" + url + "¤tpage=1'>首页</a>");
str.append(" ");
str.append("<a href='" + url + "¤tpage=" + ProPage
+ "'>上一页</a>");
str.append(" ");
} else {
str.append("首页");
str.append(" ");
str.append("上一页");
str.append(" ");
}
if (this.currentpage < this.pagecount) {
str.append("<a href='" + url + "¤tpage=" + Nextpage
+ "'>下一页</a>");
str.append(" ");
} else {
str.append("下一页");
str.append(" ");
}
if (this.pagecount > 1 && this.currentpage != this.pagecount) {
str.append("<a href='" + url + "¤tpage=" + pagecount
+ "'>尾页</a>");
str.append(" ");
} else {
str.append("尾页");
str.append(" ");
}
str.append("转到");
str
.append("<select name='currentpage' onchange='javascript:ChangePage(this.value);'>");
for (int j = 1; j <= pagecount; j++) {
str.append("<option value='" + j + "'");
if (currentpage == j) {
str.append("selected");
}
str.append(">");
str.append("" + j + "");
str.append("</option>");
}
str.append("</select>页");
str.append("</td><td width='3%'> </td></tr></table>");
str.append("<script language='javascript'>");
str.append("function ChangePage(testpage){");
str.append("document.pageform.action='" + url
+ "¤tpage='+testpage+'';");
str.append("document.pageform.submit();");
str.append("}");
str.append("</script>");
str.append("</form>");
} else if (flag.equals(PageDAO.Image)) {
/**
* 图片的分页
*/
} else if (flag.equals(PageDAO.BbsText)) {
/**
* 论坛形式的分页[直接以数字方式体现]
*/
str
.append("<table width='100%' border='0' cellspacing='0' cellpadding='0'>");
str.append("<tr>");
str.append("<td width='3%'> </td>");
str.append("<td height='26'>");
str.append("记录" + this.rscount + "条 ");
str.append("共" + this.pagecount + "页 ");
str.append("每页" + this.pagesize + "记录 ");
str.append("现在" + this.currentpage + "/" + this.pagecount + "页");
str.append("</td><td>");
// 设定是否有首页的链接
if (this.currentpage > 1) {
str.append("<a href='" + url + "¤tpage=1'>首页</a>");
str.append(" ");
}
// 设定是否有上一页的链接
if (this.currentpage > 1) {
str.append("<a href='" + url + "¤tpage=" + ProPage
+ "'>上一页</a>");
str.append(" ");
}
// 如果总页数只有10的话
if (this.pagecount <= 10) {
for (int i = 1; i <= this.pagecount; i++) {
if (this.currentpage == i) {
str.append("<font color=red>[" + i
+ "]</font> ");
} else {
str.append("<a href='" + url + "¤tpage=" + i
+ "'>" + i + "</a> ");
}
}
} else {
// 说明总数有超过10页
// 制定特环的开始页和结束页
int endPage = this.currentpage + 4;
if (endPage > this.pagecount) {
endPage = this.pagecount;
}
int startPage = 0;
if (this.pagecount >= 8 && this.currentpage >= 8) {
startPage = this.currentpage - 5;
} else {
// 表示从第一页开始算
startPage = 1;
}
System.out.println(startPage);
System.out.println(endPage);
for (int i = startPage; i <= endPage; i++) {
if (this.currentpage == i) {
str.append("<font color=red>[" + i
+ "]</font> ");
} else {
str.append("<a href='" + url + "¤tpage=" + i
+ "'>" + i + "</a> ");
}
}
}
// 设定是否有下一页的链接
if (this.currentpage < this.pagecount) {
str.append("<a href='" + url + "¤tpage=" + Nextpage
+ "'>下一页</a>");
str.append(" ");
}
// 设定是否有尾页的链接
if (this.pagecount > 1 && this.currentpage != this.pagecount) {
str.append("<a href='" + url + "¤tpage=" + pagecount
+ "'>尾页</a>");
str.append(" ");
}
str.append("</td><td width='3%'> </td></tr></table>");
} else if (flag.equals(PageDAO.BbsImage)) {
/**
* 论坛形式的分页[以图片的方式体现]
*/
// 设定分页显示的CSS
str.append("<style>");
str
.append("BODY {FONT-SIZE: 12px;FONT-FAMILY:宋体;WIDTH: 60%; PADDING-LEFT: 25px;}");
str
.append("DIV.meneame {PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-SIZE: 80%; PADDING-BOTTOM: 3px; MARGIN: 3px; COLOR: #ff6500; PADDING-TOP: 3px; TEXT-ALIGN: center}");
str
.append("DIV.meneame A {BORDER-RIGHT: #ff9600 1px solid; PADDING-RIGHT: 7px; BACKGROUND-POSITION: 50% bottom; BORDER-TOP: #ff9600 1px solid; PADDING-LEFT: 7px; BACKGROUND-IMAGE: url('"
+ this.request.getContextPath()
+ "/meneame.jpg'); PADDING-BOTTOM: 5px; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff9600 1px solid; TEXT-DECORATION: none}");
str
.append("DIV.meneame A:hover {BORDER-RIGHT: #ff9600 1px solid; BORDER-TOP: #ff9600 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; BORDER-BOTTOM: #ff9600 1px solid; BACKGROUND-COLOR: #ffc794}");
str
.append("DIV.meneame SPAN.current {BORDER-RIGHT: #ff6500 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ff6500 1px solid; PADDING-LEFT: 7px; FONT-WEIGHT: bold; PADDING-BOTTOM: 5px; BORDER-LEFT: #ff6500 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff6500 1px solid; BACKGROUND-COLOR: #ffbe94}");
str
.append("DIV.meneame SPAN.disabled {BORDER-RIGHT: #ffe3c6 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ffe3c6 1px solid; PADDING-LEFT: 7px; PADDING-BOTTOM: 5px; BORDER-LEFT: #ffe3c6 1px solid; COLOR: #ffe3c6; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ffe3c6 1px solid}");
str.append("</style>");
str.append("<div class=\"meneame\">");
// 判定是否有上一页
if (this.currentpage > 1) {
str.append("<a href='" + url
+ "¤tpage=1' hidefocus=\"true\">首页</a>");
str.append(" ");
str.append("<a href='" + url + "¤tpage=" + ProPage
+ "' hidefocus=\"true\">上一页</a>");
str.append(" ");
} else {
str.append("<span class=\"disabled\">首页</span>");
str.append(" ");
str.append("<span class=\"disabled\">上一页</span>");
str.append(" ");
}
// 显示中间的图片
if (this.pagecount <= 10) {
for (int i = 1; i <= this.pagecount; i++) {
if (this.currentpage == i) {
str.append("<span class=\"current\">" + i + "</span>");
} else {
str.append("<a href='" + url + "¤tpage=" + i
+ "' hidefocus=\"true\">" + i
+ "</a> ");
}
}
} else {
// 说明总数有超过10页
// 制定特环的开始页和结束页
int endPage = this.currentpage + 4;
if (endPage > this.pagecount) {
endPage = this.pagecount;
}
int startPage = 0;
if (this.pagecount >= 8 && this.currentpage >= 8) {
startPage = this.currentpage - 5;
} else {
// 表示从第一页开始算
startPage = 1;
}
System.out.println(startPage);
System.out.println(endPage);
for (int i = startPage; i <= endPage; i++) {
if (this.currentpage == i) {
str.append("<span class=\"current\">" + i + "</span>");
} else {
str.append("<a href='" + url + "¤tpage=" + i
+ "' hidefocus=\"true\">" + i
+ "</a> ");
}
}
}
// 判断下一页和尾页
if (this.currentpage < this.pagecount) {
if (this.currentpage < this.pagecount - 10) {
str.append("...");
str.append("<a href='" + url + "¤tpage="
+ (this.pagecount - 1) + "' hidefocus=\"true\">"
+ (this.pagecount - 1) + "</a> ");
str.append("<a href='" + url + "¤tpage="
+ this.pagecount + "' hidefocus=\"true\">"
+ this.pagecount + "</a> ");
}
str.append("<a href='" + url + "¤tpage=" + Nextpage
+ "' hidefocus=\"true\">下一页</a>");
str.append(" ");
} else {
str.append("<span class=\"disabled\">下一页</span>");
str.append(" ");
}
if (this.pagecount > 1 && this.currentpage != this.pagecount) {
str.append("<a href='" + url + "¤tpage=" + pagecount
+ "' hidefocus=\"true\">尾页</a>");
str.append(" ");
} else {
str.append("<span class=\"disabled\">尾页</span>");
str.append(" ");
}
str.append("</div>");
}
return str.toString();
}
public String getParamUrl() {
String url = "";
url = this.request.getRequestURI().toString();
if (url.indexOf("?") == -1) {
url = url + "?";
}
String totalParams = "";
Enumeration params = this.request.getParameterNames();// 得到所有参数名
while (params.hasMoreElements()) {
String tempName = params.nextElement().toString();
String tempValue = this.request.getParameter(tempName);
if (tempValue != null && !tempValue.equals("")
&& !tempName.equals("currentpage")) {
if (totalParams.equals("")) {
totalParams = totalParams + tempName + "=" + tempValue;
} else {
totalParams = totalParams + "&" + tempName + "="
+ tempValue;
}
}
}
String totalUrl = url + totalParams;
return totalUrl;
}
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