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📄 index.jsp

📁 一个论坛小程序,虽然很小,但几乎包括了论坛的所有功能
💻 JSP
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<%@ page contentType="text/html;charset=gb2312" language="java" import="java.sql.*,java.io.*"%>
<html><head><title>用JDBC访问SQL Server并实现分页功能</title></head>
<body background="bg.jpg">
<center><font size="5" color="red" face="楷体_gb2312">
<hr><table border="1">
<tr><td>标题</td><td>作者</td><td>时间</td></tr></center>
<% 
Connection conn=null;
Statement stmt=null;
ResultSet rst=null;
String strSQL="";
int PageSize=5;
int Page=1;
int totalPage=1;
int totalrecord=0;
	try{
		Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance(); 
		String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=luntan";   
		String user="sa"; 
		String password="sa";
		conn= DriverManager.getConnection(url,user,password); 
		stmt=conn.createStatement(
			ResultSet.TYPE_SCROLL_INSENSITIVE,
			ResultSet.CONCUR_READ_ONLY); 
		strSQL="select count(*) as recordcount from luntan";
		rst=stmt.executeQuery(strSQL);
		if(rst.next()) totalrecord=rst.getInt("recordcount");
		strSQL="select * from luntan";
		rst=stmt.executeQuery(strSQL);
		if(totalrecord%PageSize==0)
			totalPage=totalrecord/PageSize;
		else
			totalPage=(int)Math.floor(totalrecord/PageSize)+1;
		if(totalPage==0) totalPage=1;
		if(request.getParameter("Page")==null||request.getParameter("Page").equals(""))
			Page=1;
		else
		try{
			Page=Integer.parseInt(request.getParameter("Page"));
		}
		catch(java.lang.NumberFormatException e){
			Page=1;
		}
		if(Page<1) Page=1;
		if(Page>totalPage) Page=totalPage;
		rst.absolute((Page-1)*PageSize+1);
		for(int iPage=1;iPage<=PageSize;iPage++)
		{
			out.println("<tr>");
			out.println("<td>"+rst.getString("name")+"</td>");
			out.println("<td>"+rst.getString("filename")+"</td>");
			out.println("<td>"+rst.getDate("date")+"</td>");
			
			out.println("</tr>");

			//out.println("<td>"+rst.getString("xsmm")+"</td>");
			
			if(!rst.next()) break;
		}
	}
	catch(SQLException e){
		System.out.println(e.getMessage());
	}
	
%>
</table></font>
<form action="index.jsp" method="get">
<% 
	if(Page!=1){
	    out.print("<p>");
		out.print("<center>");
		out.print("<br>");
		out.print("<br>");
		out.print("<br>");
		out.print("<br>");
		out.print("<br>");
		out.print("<br>");
		out.print("<br>");
		
		
		out.print("<a href=show.jsp?Page=1>第一页</a>");
		out.print("&nbsp;&nbsp;&nbsp;&nbsp;");
		out.print("<a href=show.jsp?Page="+(Page-1)+">上一页</a>");
		out.print("&nbsp;&nbsp;&nbsp;&nbsp;");
	}
	if(Page!=totalPage){
	 //  out.print("<center>");
	   	
    
	
		out.print("<a href=show.jsp?Page="+(Page+1)+">下一页</a>");
		out.print("&nbsp;&nbsp;&nbsp;&nbsp;");
		out.print("<a href=show.jsp?Page="+totalPage+">最后一页</a>");
	    out.print("</p>");
	}
		
 %>
 
 <p align="center" >输入页数:<input type="text" name="Page" size="3">
 <input type="submit" value="确定">
 页数:<font color="red"><%=Page%>|<%=totalPage%></font></p>
</form>
<p align="center"> 我要留言 </p>
</body>
</html>

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