📄 ex7_2.txt

📁 企业培训过程中的记录,希望对找工作的朋友帮助.

💻 TXT

字号:

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import ="java.sql.*" %>
<HTML>
<BODY>
 <%
    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:grade"," "," ");
         sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
         rs=sql.executeQuery("SELECT * FROM students");//返回可滚动的结果集

         rs.last();                //将游标移动到最后一行
         int lownumber=rs.getRow();//获取最后一行的行号
         out.print("共有"+lownumber+"条记录<br>");

         out.print("<BR>从表中最后一行开始读取记录：");
         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();//为了逆序输出记录，需将游标移动到最后一行之后
         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(3);
             out.print("<TD >"+math+"</TD>");
             english=rs.getInt(4);
             out.print("<TD >"+english+"</TD>");
             physics=rs.getInt(5);
             out.print("<TD >"+physics+"</TD>");
             out.print("</TR>") ;
           }
         out.print("</Table><br>");

         out.print("<br>输出第5条记录<BR><br>");
         rs.absolute(5);
         number=rs.getString(1);
         out.print(number+",");
         name=rs.getString(2);
         out.print(name+",");
         math=rs.getInt(3);
         out.print(math+",");
         english=rs.getInt(4);
         out.print(english+",");
         physics=rs.getInt(5);
         out.print(physics+"。");
         con.close();
      }
    catch(SQLException e1)  {}

 %>

</BODY>
</HTML>

⌨️ 快捷键说明

复制代码 Ctrl + C

搜索代码 Ctrl + F

全屏模式 F11

切换主题 Ctrl + Shift + D

显示快捷键 ?

增大字号 Ctrl + =

减小字号 Ctrl + -