java使用mysql-connector-java查询数据库

    //查询public static void query() {try {//调用Class.forName()方法加载驱动程序Class.forName("com.mysql.cj.jdbc.Driver");Connection conn = DriverManager.getConnection("jdbc:mysql://192.168.10.102/?useUnicode=true&characterEncoding=UTF-8", "", "");//url 账号 密码Statement stmt = conn.createStatement(); //创建Statement对象ResultSet rs = stmt.executeQuery("select * from babyfs_v2.t_backend_user_role where id=1");//创建数据对象while (rs.next()) {int id = rs.getInt("id");String create_time = rs.getString("create_time");System.out.println(id);System.out.println(create_time);}rs.close();stmt.close();conn.close();} catch (Exception e) {e.printStackTrace();}}