📄 example5_3.jsp

📁 可以让初学者有一个感性的认识

💻 JSP

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<HTML>
<%@page contentType="text/html;charset=GB2312"%>
<%@page import="java.sql.*" %>

<BODY bgcolor=cyan><Font size=3>
<%	String name,number;
	int math,physics,english;

	Connection con;
	Statement sql;
	ResultSet rs;
	
	try
	{
		Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
	}catch(ClassNotFoundException e){}
	try
	{
		con=DriverManager.getConnection("jdbc:odbc:sun","","");
		sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
		rs=sql.executeQuery("SELECT * FROM students");
		rs.last();
		int lownumber=rs.getRow();
		out.print("该表共有"+lownumber+"条记录");
		out.print("<BR>现在逆序输出记录");
		out.print("<Table Border>");
			out.print("<TR>");
				out.print("<TH width=100>"+"学号");
				out.print("<TH width=100>"+"姓名");
				out.print("<TH width=50>" +"数学成绩");
				out.print("<TH width=50>" +"英语成绩");
				out.print("<TH width=50>" +"物理成绩");
			out.print("</TR>");
			rs.afterLast();
			while(rs.previous())
			{
				out.print("<TR>");
					number=rs.getString(1);
					out.print("<TD>"+number+"</TD>");
					name=rs.getString(2);
					out.print("<TD>"+name+"</TD>");
					math=rs.getInt("数学成绩");
					out.print("<TD>"+math+"</TD>");
					english=rs.getInt("英语成绩");
					out.print("<TD>"+english+"</TD>");
					physics=rs.getInt("物理成绩");
					out.print("<TD>"+physics+"</TD>");
				out.print("</TR>");
			}
		out.print("</Table>");
		
		out.print("单独输出第5条记录<BR>");
		rs.absolute(5);
		number=rs.getString(1);
		out.print(number+",");
		name=rs.getString(2);
		out.print(name+",");
		math=rs.getInt("数学成绩");
		out.print(math+",");
		english=rs.getInt("英语成绩");
		out.print(english+",");
		physics=rs.getInt("物理成绩");
		out.print(physics+"。");
		con.close();
	}catch(SQLException e1){}
%>

</FONT>
</BODY>
</HTML>

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