1
BBS
<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*"%>
<%
int pageSize = 3;
String strPageNo = request.getParameter("pageNo");
int pageNo;
if (strPageNo == null || strPageNo.equals("")) {
pageNo = 1;
} else {
try {
pageNo = Integer.parseInt(strPageNo.trim());
} catch (NumberFormatException e) {
pageNo = 1;
}
if (pageNo <= 0)
pageNo = 1;
}
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/bbs?user=root&password=root";
Connection conn = DriverManager.getConnection(url);
Statement stmtCount = conn.createStatement();
ResultSet rsCount = stmtCount
.executeQuery("select count(*) from article where pid = 0");
rsCount.next();
int totalRecords = rsCount.getInt(1);
int totalPages = totalRecords % pageSize == 0 ? totalRecords
/ pageSize : totalRecords / pageSize + 1;
if (pageNo > totalPages)
pageNo = totalPages;
int startPos = (pageNo - 1) * pageSize;
Statement stmt = conn.createStatement();
ResultSet rs = stmt
.executeQuery("select * from article where pid = 0 order by pdate desc limit "
+ startPos + "," + pageSize);
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>Insert title here</title>
</head>
<body>
<a href="Post.jsp">发表新帖</a>
<table border="1">
<%
while (rs.next()) {
%>
<tr>
<td><%=rs.getString("title")%></td>
</tr>
<%
}
rs.close();
stmt.close();
conn.close();
%>
</table>
共<%=totalPages%>页 第<%=pageNo%>页
<a href="ShowArticleFlat.jsp?pageNo=<%=pageNo - 1%>"> < </a>
<a href="ShowArticleFlat.jsp?pageNo=<%=pageNo + 1%>"> > </a>
<form name="form1" action="ShowArticleFlat.jsp">
<select name="pageNo" onchange="document.form1.submit()">
<%
for (int i = 1; i <= totalPages; i++) { // 下拉条
%>
<option value=<%=i%> <%=(pageNo == i) ? "selected" : ""%>>
第<%=i%>页
<%
}
%>
</select>
</form>
<form name="fom2" action="ShowArticleFlat.jsp">
<input type=text size=4 name="pageNo" value=<%=pageNo%> /> <input
type="submit" value="go" />
</form>
</body>
</html>