import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class GetOracleConnection{

/** Oracle数据库连接URL*/

private final static String DB_URL = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";

/** Oracle数据库连接驱动*/

private final static String DB_DRIVER = "oracle.jdbc.driver.OracleDriver";

/** 数据库用户名*/

private final static String DB_USERNAME = "global";

/** 数据库密码*/

private final static String DB_PASSWORD = "odps";

/**

* 获取数据库连接

* @return

* @throws SQLException

*/

public void getConnection(){

/** 声明Connection连接对象*/

Connection conn = null;

Statement st=null;

ResultSet rs=null;

try{

/** 使用Class.forName()方法自动创建这个驱动程序的实例且自动调用DriverManager来注册它*/

Class.forName(DB_DRIVER);

/** 通过DriverManager的getConnection()方法获取数据库连接*/

conn = DriverManager.getConnection(DB_URL,DB_USERNAME,DB_PASSWORD);

System.out.println("连接数据库成功！");

/**采用Statement进行查询 */

st = conn.createStatement();

rs = st.executeQuery("select * from tab001");

while(rs.next()) {

/**打印字段信息 */

System.out.println(rs.getString("content"));

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

/**注：一定要记得关闭连接，否则后果很严重的！*/

try {

rs.close();

st.close();

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

public static void main(String[] args){

(new GetOracleConnection()).getConnection();

}

}