import java.sql.*;public class Connect
{static Connection con;static Statement stmt;public static void doConnect() throws SQLException{String JDriver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";// SQL数据库引擎String connectDB = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=JavaPattern";// 数据源try {Class.forName(JDriver);// 加载数据库引擎，返回给定字符串名的类} catch (ClassNotFoundException e) {System.out.println("加载数据库引擎失败");System.exit(0);}System.out.println("数据库驱动成功");try {String user = "sa";String password = "huxiang";con = DriverManager.getConnection(connectDB, user, password);// 连接数据库对象System.out.println("连接数据库成功");stmt = con.createStatement();} catch (SQLException e) {e.printStackTrace();System.out.println("数据库连接错误");System.exit(0);}ResultSet rs = stmt.executeQuery("SELECT * FROM Student ");while (rs.next()) {System.out.println(rs.getString("id") + "\t"+ rs.getString("password"));}System.out.println("读取完毕");stmt.close();con.close();System.out.println("数据库关闭成功！");}public static void main(String[] args) {try {doConnect();} catch (SQLException e) {e.printStackTrace();}}
}