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提示：以下是本篇文章正文内容，下面案例可供参考
1. Use native JDBC to operate data
//加载驱动
Class.forName("com.mysql.cj.jdbc.Driver");
//获取连接
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test_orm", "root", "123456");
//准备SQL
String sql = "SELECT * FROM user WHERE id = ?";
//获取预编译对象
PreparedStatement ps = conn.prepareStatement(sql);
//设置参数
ps .setInt(1,20);
//执行SQL
ResultSet rs = ps .executeQuery(sql);
//获取数据
while (resultSet.next()) {
System.out.println("用户ID" + resultSet.getInt(1) + " 用户名:" + resultSet.getString(2));
}
2. Use Easy-ORM
- Query data
String sql = "SELECT * FROM user WHERE username like ?";
//查询姓王的用户
List<User> users = JdbcTemplate.selectList(sql, User.class, "王%");
System.out.println(users);
- Add new data
@Test
public void insert(){
User user = new User();
user.setId(1010L);
user.setUsername("帅飞");
user.setPassword("123456");
user.setSex(1);
user.setPhone("18811111111");
//返回受影响行数
int rowNum = JdbcTemplate.insert(user);
}
- change the data
@Test
public void update(){
String sql = "UPDATE user SET username = ? WHERE id = ?";
JdbcTemplate.update(sql,"小王",888L);
}
- delete data
@Test
public void delete(){
String sql = "DELETE from company WHERE id = ?";
JdbcTemplate.delete(sql,1);
}
- Just @Translation enable transaction control
public class LoginService implements Login{
@Override
@Translation
public String register(String username,String password) {
//...注册操作
}
}
Get the object and execute the register method
Login bean = ProxyFactory.getBean("proxyLoginService", Login.class);
String result = bean.register("老八", "123");
System.out.println("register方法返回结果==>" + result);
具体文档请见Git ee中的WiKi Git address
