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| @Test
public void insertTest(){
ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
JdbcTemplate jdbcTemplate = applicationContext.getBean("jdbcTemplate", JdbcTemplate.class);
String sql = "insert into users values(null,?,?)";
int i = jdbcTemplate.update(sql, "Jackasher", 21);
System.out.println(i);
}
@Test
public void updateTest(){
ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
JdbcTemplate jdbcTemplate = applicationContext.getBean("jdbcTemplate", JdbcTemplate.class);
String sql = "update users set name = ? where id = ?";
int i = jdbcTemplate.update(sql, "Flp", 2);
System.out.println(i);
}
@Test
public void deleteTest(){
ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
JdbcTemplate jdbcTemplate = applicationContext.getBean("jdbcTemplate", JdbcTemplate.class);
String sql = "delete from users where id = ?";
int i = jdbcTemplate.update(sql, 2);
System.out.println(i);
}
@Test
public void selectTest(){
ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
JdbcTemplate jdbcTemplate = applicationContext.getBean("jdbcTemplate", JdbcTemplate.class);
String sql = "select * from users where id = ?";
User user = jdbcTemplate.queryForObject(sql, new BeanPropertyRowMapper<>(User.class), 1);
System.out.println(user);
String sql2 = "select * from users;";
List<User> users = jdbcTemplate.query(sql2, new BeanPropertyRowMapper<>(User.class));
users.forEach(user1 -> {
System.out.println(user1);
});
|