ref:Spring JDBC框架

ref:https://blog.csdn.net/u011054333/article/details/54772491

Spring JDBC简介

先来看看一个JDBC的例子。我们可以看到为了执行一条SQL语句，我们需要创建连接，创建语句对象，然后执行SQL，然后操纵结果集获取数据。

try(Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD)){
    List<User> users = new ArrayList<>();
    try (Statement statement = connection.createStatement()) {
        try (ResultSet rs = statement.executeQuery("SELECT *FROM user")) {
            while (rs.next()) {
                User user = new User();
                user.setId(rs.getInt(1));
                user.setUsername(rs.getString(2));
                user.setPassword(rs.getString(3));
                user.setNickname(rs.getString(4));
                user.setBirthday(rs.getDate(5));
                users.add(user);
            }
        }
    }
}

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