JAVA Web基础 留言本综合练习

package com.hanqi.model;
import java.util.Date;
//留言本对象
public class Message {
    private Integer id;//留言ID
    private String content;//留言内容
    private Date createtime;//留言时间
    private String username;//留言人用户名
    public Message(Integer id, String content, Date createtime, String username) {
        super();
        this.id = id;
        this.content = content;
        this.createtime = createtime;
        this.username = username;
    }
    public Message() {
        super();
    }
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
    public Date getCreatetime() {
        return createtime;
    }
    public void setCreatetime(Date createtime) {
        this.createtime = createtime;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }    
}

package com.hanqi.model;
import java.util.Date;
//用户对象
public class Users {
	private Integer id ;//用户ID
	private String username;//用户名
	private String password;//用户密码
	private String realname;//用户真实姓名
	private Date createtime;//用户注册时间
	private Integer mark;//用户有效标记
	public Users(Integer id, String username, String password, String realname, Date createtime, Integer mark) {
		super();
		this.id = id;
		this.username = username;
		this.password = password;
		this.realname = realname;
		this.createtime = createtime;
		this.mark = mark;
	}
	public Users() {
		super();
	}
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getRealname() {
		return realname;
	}
	public void setRealname(String realname) {
		this.realname = realname;
	}
	public Date getCreatetime() {
		return createtime;
	}
	public void setCreatetime(Date createtime) {
		this.createtime = createtime;
	}
	public Integer getMark() {
		return mark;
	}
	public void setMark(Integer mark) {
		this.mark = mark;
	}
	@Override
	public String toString() {
		return username;
	}
}