Posted on 2007-05-21 11:52
love1563 閱讀(492)
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142
、可能會讓你寫一段
Jdbc
連
Oracle
的程序
,
并實(shí)現(xiàn)數(shù)據(jù)查詢
.
答
:
程序如下：
package hello.ant;
import java.sql.*;
public class? jdbc
{
?String dbUrl="jdbc:oracle:thin:@127.0.0.1:1521:orcl";
?String theUser="admin";
?String thePw="manager";
?Connection c=null;
?Statement conn;
?ResultSet rs=null;
?public jdbc()
?{
??try{
??? Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
????????? c = DriverManager.getConnection(dbUrl,theUser,thePw);
??? conn=c.createStatement();
??}catch(Exception e){
???e.printStackTrace();
??}
?}
?public boolean executeUpdate(String sql)
?{
???try
???{
?????conn.executeUpdate(sql);
?????return true;
???}
???catch (SQLException e)
???{
?????e.printStackTrace();
?????return false;
???}
?}
?public ResultSet executeQuery(String sql)
?{
???rs=null;
???try
???{
?????rs=conn.executeQuery(sql);
???}
???catch (SQLException e)
???{
?????e.printStackTrace();
???}
???return rs;
?}
?public void close()
?{
???try
???{
?????conn.close();
?????c.close();
???}
???catch (Exception e)
???{
?????e.printStackTrace();
???}
?}
?public static void main(String[] args)
?{
??ResultSet rs;
??jdbc conn = new jdbc();
??rs=conn.executeQuery("select * from test");
??try{
??while (rs.next())
??{
???System.out.println(rs.getString("id"));
???System.out.println(rs.getString("name"));
??}
??}catch(Exception e)
??{
???e.printStackTrace();
??}
?}
}