Java中JDBC操作MySQL数据库

import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Test {
//URL 地址：127.0.0.1端口号:3306/数据库名library
private static final String URL="jdbc:mysql://127.0.0.1:3306/library";
private static final String USER="root";
private static final String PASSWORD="123";
public static void main(String[] args) throws ClassNotFoundException, SQLException {
// TODO Auto-generated method stub
//1.加载驱动程序
Class.forName("com.mysql.jdbc.Driver");
//2.获得数据库链接
Connection conn=DriverManager.getConnection(URL, USER, PASSWORD);
//3.操纵数据库
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("要执行的语句");
while (rs.next()) {
System.out.println(rs.getString("数据库列名"));

}
}

}