package com.tera.test;
import java.sql.Connection;  
import java.sql.DriverManager;  
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;  

public class DBHelper {  
    public static final String url = "jdbc:teradata://xxx.xxx.x.xxx/CLIENT_CHARSET=GBK,TMODE=TERA,CHARSET=ASCII,database=etlsim1,LOB_Support=OFF"
 
;  
    public static final String name = "com.teradata.jdbc.TeraDriver";  
    public static final String user = "etlsim1";  
    public static final String password = "etlsim1";  

    public Connection conn = null;  
    public PreparedStatement pst = null;  

    public DBHelper(String sql) {  
        try
 
 {  
            Class.forName(name);//指定連線型別  
            conn = DriverManager.getConnection(url, user, password);//獲取連線  
            pst = conn.prepareStatement(sql);//準備執行語句  
        } catch (Exception e) {  
            e.printStackTrace();  
        } 
    }  

    public void close() {  
        try
 
 {  
            this.conn.close();  
            this.pst.close();  
        } catch (SQLException e) {  
            e.printStackTrace();  
        }  
    }  

    public static void main(String[] args) {  
        String sql = "select *from ETL_Server";//SQL語句  
        DBHelper db1 = new DBHelper(sql);//建立DBHelper物件  

        try {  
            ResultSet ret = db1.pst.executeQuery();//執行語句，得到結果集  
            while (ret.next()) {  
                String uid = ret.getString(1);  
                String ufname = ret.getString(2);  

            }
            ret.close();  
            db1.close();//關閉連線  
        } catch (SQLException e) {  
            e.printStackTrace();  
        }  
    }  
}