JDBC连接数据库的例子(oracle)

import java.sql.*;

 

public class Ora8iConnect
{
public Ora8iConnect(String db,String id,String pwd)
{ dbNAME=db;
userID=id;
userPWD=pwd;
beginConnect(); //连接数据库
}
/*-
*返回一个Connection对象
*/
public Connection getConnection(){return conn;}

/*-
*连接数据库，成功后返回1否则返回0
*/
public int beginConnect()
{ try
{ //加载一个Oracle驱动
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
//使用OCI8连接到数据库
conn=DriverManager.getConnection("jdbc:oracle:oci8:@"+dbNAME,userID,userPWD);
return 1;
}
catch(SQLException e) //捕捉SQL违例
{ System.out.println("Ora8iConnect在连接oracle8数据库时捕获");
while (e!=null)
{ System.out.println("SQLState:"+e.getSQLState());
System.out.println("Message :"+e.getMessage());
System.out.println("Vendor :"+e.getErrorCode());
e=e.getNextException();
System.out.println(" ");
}
conn=null;
return 0;
}
}

private Connection conn; //连接对象
private String dbNAME; //实例
private String userID; //用户名
private String userPWD; //口令

}