javaee简单登录和增删查改

javaee简单登录和增删查改。实现个人信息的一些增删查改。和登录报错，等等。

package com.jt.talk.bean;

public class SingleTalking {
	
	private long id;
	private long fromUserId;
	private long toUserId;
	private String content;
	private long createTime;
	
	public long getId（） {
		return id;
	}
	public void setId（long id） {
		this.id = id;
	}
	public long getFromUserId（） {
		return fromUserId;
	}
	public void setFromUserId（long fromUserId） {
		this.fromUserId = fromUserId;
	}
	public long getToUserId（） {
		return toUserId;
	}
	public void setToUserId（long toUserId） {
		this.toUserId = toUserId;
	}
	public String getContent（） {
		return content;
	}
	public void setContent（String content） {
		this.content = content;
	}
	public long getCreateTime（） {
		return createTime;
	}
	public void setCreateTime（long createTime） {
		this.createTime = createTime;
	}
	@Override
	public String toString（） {
		return “SingleTalking [id=“ + id + “ fromUserId=“ + fromUserId + “ toUserId=“ + toUserId + “ content=“
				+ content + “ createTime=“ + createTime + “]“;
	}
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-06-23 10:30  JTalking\
     文件         727  2018-06-23 10:31  JTalking\.classpath
     文件        1041  2018-06-23 10:30  JTalking\.project
     目录           0  2018-06-23 10:30  JTalking\.settings\
     文件         567  2018-06-23 10:30  JTalking\.settings\.jsdtscope
     文件         364  2018-06-23 10:30  JTalking\.settings\org.eclipse.jdt.core.prefs
     文件         476  2018-06-23 10:30  JTalking\.settings\org.eclipse.wst.common.component
     文件         305  2018-06-23 10:30  JTalking\.settings\org.eclipse.wst.common.project.facet.core.xml
     文件          49  2018-06-23 10:30  JTalking\.settings\org.eclipse.wst.jsdt.ui.superType.container
     文件           6  2018-06-23 10:30  JTalking\.settings\org.eclipse.wst.jsdt.ui.superType.name
     目录           0  2018-06-23 10:30  JTalking\build\
     目录           0  2018-06-23 10:31  JTalking\build\classes\
     目录           0  2018-06-23 10:31  JTalking\build\classes\com\
     目录           0  2018-06-23 18:45  JTalking\build\classes\com\jt\
     目录           0  2018-06-23 18:45  JTalking\build\classes\com\jt\talk\
     目录           0  2018-06-23 18:48  JTalking\build\classes\com\jt\talk\bean\
     文件        1751  2018-06-23 18:50  JTalking\build\classes\com\jt\talk\bean\SingleTalking.class
     目录           0  2018-06-23 18:47  JTalking\build\classes\com\jt\talk\dao\
     文件        3753  2018-06-24 09:47  JTalking\build\classes\com\jt\talk\dao\TalkingDao.class
     目录           0  2018-06-23 19:14  JTalking\build\classes\com\jt\talk\service\
     文件        2401  2018-06-24 09:57  JTalking\build\classes\com\jt\talk\service\TalkingService.class
     目录           0  2018-06-24 09:39  JTalking\build\classes\com\jt\talk\servlet\
     文件        2851  2018-06-23 23:43  JTalking\build\classes\com\jt\talk\servlet\GetSingleMessage.class
     文件        2677  2018-06-24 09:50  JTalking\build\classes\com\jt\talk\servlet\SendSingleMessage.class
     文件        2168  2018-06-24 09:23  JTalking\build\classes\com\jt\talk\servlet\ToSigleTalkingPage.class
     目录           0  2018-06-23 10:33  JTalking\build\classes\com\jt\user\
     目录           0  2018-06-23 17:02  JTalking\build\classes\com\jt\user\bean\
     文件        1730  2018-06-23 17:02  JTalking\build\classes\com\jt\user\bean\Friend.class
     文件        1942  2018-06-23 10:35  JTalking\build\classes\com\jt\user\bean\User.class
     目录           0  2018-06-23 15:03  JTalking\build\classes\com\jt\user\dao\
     文件        3281  2018-06-23 17:12  JTalking\build\classes\com\jt\user\dao\FriendsDao.class
............此处省略67个文件信息