新增BasePojo类

为了简化将来需要更多的Pojo(Bean),做个抽象的BasePojo,把共有的属性和方法统一一下.

类名为BasePojo, package自然是net.wendal.nutzbook.bean, Bean的内容如下

package net.wendal.nutzbook.bean;
import java.util.Date;
import org.nutz.dao.entity.annotation.Column;
import org.nutz.json.Json;
import org.nutz.json.JsonFormat;
public abstract class BasePojo {
    @Column("ct")
    protected Date createTime;
    @Column("ut")
    protected Date updateTime;
    public String toString() {
        // 这不是必须的, 只是为了debug的时候方便看
        return Json.toJson(this, JsonFormat.compact()));
    }
    public Date getCreateTime() {
        return createTime;
    }
    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }
    public Date getUpdateTime() {
        return updateTime;
    }
    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }
}

可以看到,这个类带了@Column注解的属性,所以继承这个类的子类的数据库属性均需要标注@Column了.

另外这个类也覆盖了toString方法,默认输出为对象的Json字符串格式

修改User类, 使其继承BasePojo,并删除createTime和updateTime

package net.wendal.nutzbook.bean;
import org.nutz.dao.entity.annotation.Column;
import org.nutz.dao.entity.annotation.Id;
import org.nutz.dao.entity.annotation.Name;
import org.nutz.dao.entity.annotation.Table;
@Table("t_user")
public class User extends BasePojo {
    @Id
    private int id;
    @Name
    @Column
    private String name;
    @Column("passwd")
    private String password;
    @Column
    private String salt;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getSalt() {
        return salt;
    }
    public void setSalt(String salt) {
        this.salt = salt;
    }
}