Java连接Oracle数据库

package com.db;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class DBConnection {
	// 连接Oracle数据库
	public void OracleConnection() {
		Connection con = null;
		PreparedStatement pre = null;
		ResultSet rs = null;

		try {
			// 1. 加载Oracle驱动程序
			Class.forName("oracle.jdbc.driver.OracleDriver");
            
			// 2. 设置Oracle数据库基本信息
			String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
			String user = "scott";
			String password = "goodluck";

			// 2. 获取连接
			con = DriverManager.getConnection(url, user, password);
			System.out.println("----> Connection Success！");

			// 3. 执行SQL语句
			String sql = "SELECT * FROM EMP";
			pre = con.prepareStatement(sql);

			// 4. 获取结果集
			rs = pre.executeQuery();
			while (rs.next()) {
				System.out.println("编号：" + rs.getString("empno") 
						        + "；姓名：" + rs.getString("ename")
						        + "; 工作:" + rs.getString("job")
						        + "; 领导:" + rs.getString("mgr")
						        + "; 雇佣日期:" + rs.getString("hiredate")
						        + "; 工资:" + rs.getString("sal")
						        + "; 奖金:" + rs.getString("comm")
						        + "; 部门:" + rs.getString("deptno"));
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (rs != null)
					rs.close();
				if (pre != null)
					pre.close();
				if (con != null)
					con.close();
				System.out.println("----> Connection End <-----");
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	public static void main(String[] args) {
		DBConnection db = new DBConnection();
		db.OracleConnection();
	}
}