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package cn.sigangjun.project;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;/** * @author sigangjun * */public class MysqlJdbcTest {		public static void main(String[] args) throws SQLException, InstantiationException, IllegalAccessException, ClassNotFoundException {		//1.注册驱动		DriverManager.registerDriver(new com.mysql.jdbc.Driver());		System.getProperty("jdbc.drivers","com.mysql.jdbc.Driver:oracle.jdbc.driver.OracleDriver");		Class.forName("com.mysql.jdbc.Driver").newInstance();				//2.建立连接		Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/dang","root","root");				//3.创建语句		Statement st = con.createStatement();				//4.执行语句		ResultSet rs = st.executeQuery("select * from d_user");				//5.执行结果		while(rs.next()){			System.out.print(rs.getObject(1)+"\t");			System.out.print(rs.getObject(2)+"\t");			System.out.print(rs.getObject(3)+"\t");			System.out.println(rs.getObject(4));		}				//6.释放资源		rs.close();		st.close();		con.close();	}}

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