📄 showarticleflat.jsp
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<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*"%>
<%
int pageNO;
int pageSize = 5;
String strPageNO = request.getParameter("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;
}
String str = "";
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/bbs?user=root&password=yuanshuai");
Statement stNO = conn.createStatement();
ResultSet rsNO = stNO.executeQuery("select count(*) from article where pid=0");
rsNO.next();
int pageTotal = rsNO.getInt(1) / pageSize == 0 ? rsNO.getInt(1) / pageSize : rsNO.getInt(1) / pageSize + 1 ;
if (pageNO > pageTotal) pageNO = pageTotal;
int startNO = (pageNO -1)*pageSize;
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery("select * from article where pid=0 order by pdate desc limit " + startNO + "," + pageSize);
while (rs.next()) {
str += "<tr align=center><td>" + "<a href='ShowArticleDetail.jsp?id=" + rs.getInt("id") + "'>" +
rs.getString("title") + "</a></td><td>" + rs.getString("pdate") + "</td></tr>";
}
try {
if (rs != null){
rs.close();
rs = null;
}
if (st != null){
st.close();
st = null;
}
if (conn != null) {
conn.close();
conn = null;
}
} catch (SQLException e) {
System.out.println("数据库已经关闭");
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>显示所有主题</title>
</head>
<body link="green" vlink="blue" alink="red">
<div align="center">
<font color="red" size=6><b>显示所有主题</b></font>
<br>
<a href="Post.jsp">发表新贴</a>
<br><br>
<table align=center border=5 bordercolorlight="#FF00FF" bordercolordark="#FF0000" width="45%">
<th>主题</th><th>发表日期</th>
<%=str%>
</table>
<br>
共<%=pageTotal %>页 第<%=pageNO%>页
<a href=ShowArticleFlat.jsp?pageNO=<%=pageNO - 1%>>前一页</a>
<%for (int i = 1; i <= pageTotal ; i++){ %>
<a href="ShowArticleFlat.jsp?pageNO=<%=i%>"><%=i%></a>
<%}%>
<a href=ShowArticleFlat.jsp?pageNO=<%=pageNO + 1%>>下一页</a>
<form name="form1" action="ShowArticleFlat.jsp">
<select value="pageNO" onchange="document.form1.submit()">
<%for (int i = 1; i <= pageTotal; i++) { %>
<option value=<%=i%> <%=(pageNO == i) ? "selected" : ""%>>第<%=i %>页</option>
<%} %>
</select>
</form>
<form name="form2" action="ShowArticleFlat.jsp">
<input type="text" name="pageNO" size=4 value=<%=pageNO %>></input>
<input type="submit" value="GO"></input>
</form>
</div>
</body>
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