oracle原生JDBC访问数据库

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/**
 * 
 */
package com.umcservice.test;

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

import org.apache.log4j.Logger;



/**
 * @ClassName:       test
 * @Description:    TODO
 * @author:            szj
 * @date:            2018年9月27日        上午11:21:04
 */
public class test {
	private Logger logger  = Logger.getLogger(test.class);
	public static void main(String[] args) throws ClassNotFoundException, SQLException {
		//注册驱动,反射方式加载
		Class.forName("oracle.jdbc.driver.OracleDriver");
		//设置url
		String url = "jdbc:oracle:thin:@127.0.0.1:1521:Test";
		//设置用户名
		String username = "root";
		//设置用户密码
		String password = "root";
		//获得链接对象
		Connection conn = DriverManager.getConnection(url, username, password);
		//获得执行者对象
		String sql = "select * from userPhone";
		PreparedStatement pr = conn.prepareStatement(sql);
		//获得结果集
		ResultSet rs = pr.executeQuery();
		//获得结果集处理
		while(rs.next()){
			System.out.println("遍历结果打印结果!");
		}
		//释放资源
			rs.close();
			pr.close();
			conn.close();
	}
	
}