📄 index.jsp
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<%@ page contentType="text/html;charset=GBK" %>
<%@ page language="java" import="java.sql.*"%>
<%@ page import="java.lang.Math.*" %>
<jsp:useBean id="conn" scope="page" class="db.ConnOracle"/>
<%!
ResultSet rs = null;
ResultSet rsTmp = null;
String sql = "";
int PageSize = 6;
int Page = 1;
int totalPage = 1;
String str = "";
public String ShowOnePage(ResultSet rs, int Page, int PageSize) {
str = "";
// 先将记录指针定位到相应的位置
try {
rs.absolute( (Page-1) * PageSize + 1);
}catch(SQLException e) {
}
for(int iPage=1; iPage<=PageSize; iPage++) {
str += RsToGbook(rs);
try {
if(!rs.next()) break;
}catch(Exception e) {
System.out.println("Locate Current Page Error!");
}
}
return str;
}
// 显示单行记录子模块
public String RsToGbook( ResultSet rs ) {
String tt = "";
String email = "";
String homepage = "";
String name = "";
String sex = "";
String subject = "";
String memo = "";
String gtime = "";
try {
email = rs.getString("email");
homepage = rs.getString("homepage");
name = rs.getString("name");
sex = rs.getString("gender");
subject = rs.getString("title");
memo = rs.getString("content");
gtime = rs.getString("gtime");
}catch(SQLException e) {
System.out.println("Execute SQL Error!");
System.out.println( e.toString() );
}
if(!email.equals("")) {
email = "<A HREF='mailto:" + email + "'><IMG SRC='email.gif' BORDER='0' ALT='电子邮件信箱'></A>";
}
if(homepage.equals("http://") || homepage.equals("")) {
homepage = "";
}else {
homepage = "<A HREF='" + homepage + "'><IMG SRC='homepage.gif' BORDER='0' ALT='首页'></A>";
}
tt += "<TABLE BORDER='0' WIDTH='70%'>";
tt += "<TR><TD><TABLE BORDER='0'><TR><TD><IMG SRC='buttom-g.gif'> ";
tt += name + "</TD><TD>";
tt += email + homepage;
tt += "</TD><TD><FONT style='font: 9pt 宋体'>[</FONT><FONT style='font: 9pt 宋体' COLOR='BLUE'>" + sex;
tt += "</font><FONT style='font: 9pt 宋体'>]</FONT></TD></TR></TABLE></TD></TR>";
tt += "<TR><TD></TD></TR>";
tt += "<TR><TD COLSPAN='4'>" + "<IMG SRC='file.gif' BORDER='0' ALT='主题'>" + subject + "</TD></TR>";
tt += "<TR><TD COLSPAN='4'>" + "<IMG SRC='write.gif' BORDER='0' ALT='留言'>" + memo + "</TD></TR>";
tt += "<TR><TD COLSPAN='4'><FONT FACE='Arial' SIZE='1'>[" + gtime + "]</TD></TR>";
tt += "<HR BORDER='1' WIDTH='100%'></TABLE>";
return tt;
}
%>
<%
sql = "select * from gbook order by gtime desc";
try {
rs = conn.executeQuery( sql );
}catch(Exception e) {
out.println("访问数据库出错！");
}
rsTmp = conn.executeQuery("select count(*) as mycount from gbook");
rsTmp.next();
int totalrecord = rsTmp.getInt("mycount");
if(totalrecord % PageSize ==0) totalPage = totalrecord / PageSize; // 如果是当前页码的整数倍
else totalPage = (int) Math.floor( totalrecord / PageSize ) + 1; // 如果最后还空余一页
if(totalPage == 0) totalPage = 1;
try {
if(request.getParameter("Page")==null || request.getParameter("Page").equals(""))
Page = 1;
else
Page = Integer.parseInt(request.getParameter("Page"));
} catch(java.lang.NumberFormatException e) { // 捕获用户从浏览器地址拦直接输入Page=sdfsdfsdf所造成的异常
Page = 1;
}
if(Page < 1) Page = 1;
if(Page > totalPage) Page = totalPage;
%>
<html>
<body BGCOLOR="#FFFFFF">
<div align="center">
<img SRC="gbook.gif" WIDTH="374" HEIGHT="93"><br>
[<a HREF="gform.html"><font COLOR="red" onmouseover="this.style.color='#0000BB'" onmouseout="this.style.color='red'">我要留言</font></a>]
<%
out.println((ShowOnePage(rs, Page, PageSize)));
%>
<form Action="index.jsp" Method="GET">
<%
if(Page != 1) {
out.println("<A HREF=index.jsp?Page=1>第一页</A>⌨️ 快捷键说明
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