JDBC数据库查询

package org.lxh.execdemon;

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


//查询数据库中的内容
public class ResultSetDemon01 {

	public static final String DBDRIVER = "oracle.jdbc.driver.OralceDriver";
	
	public static final String DBURL = "jdbc:oracle:thin:@locast:1521:orcl";
	
	public static final String DBUSER = "admin";
	
	public static final String DBPASS = "admin";
	
	public static void main(String[] args) throws Exception{
		
		Connection conn = null;//表示数据库连接的对象 
		
		Statement stmt = null;//表示数据库更新操作
		
		ResultSet result = null;//表示接受数据库查询到的结果
		
		Class.forName(DBDRIVER);//使用class类加载驱动程序
		
		conn = DriverManager.getConnection(DBURL, DBUSER, DBPASS);//连接数据库
		
		stmt = conn.createStatement();//tatement接口需要通过connection接口进行实例化操作
		
		result = stmt.executeQuery("select * from person");//执行sql语句，结果集放在result中
		
		while(result.next()){//判断是否还有下一行
			String name = result.getString("name");//获取数据库person表中name字段的值
			System.out.println(name);
		}
		result.close();
		stmt.close();
		conn.close();
		
	}

}