Java 实体类生成：使用 SQL 语句创建 User 类

@Entity @Table(name = 'user') public class User {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

private String name;

private Integer age;

public User() {}

public User(Long id, String name, Integer age) {
    this.id = id;
    this.name = name;
    this.age = age;
}

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Integer getAge() {
    return age;
}

public void setAge(Integer age) {
    this.age = age;
}

@Override
public String toString() {
    return 'User{' +
            'id=' + id +
            ', name=' + name + ''' +
            ', age=' + age +
            '}';
}

}