package?dao;

import?java.sql.Connection;
import?java.sql.PreparedStatement;
import?java.sql.ResultSet;

import?entity.User;

import?util.DBUtil;

public?class?UserDao?{
	private?Connection?ct;
	private?PreparedStatement?ps;
	private?ResultSet?rs;
	public?boolean?findUser（String?username）?{
		boolean?b?=?false;
		try?{
			ct?=?DBUtil.getConnection（）;
			ps?=?ct.prepareStatement（“select?*?from?lz_user?where?username=?“）;
			ps.setString（1?username）;
			rs?=?ps.executeQuery（）;
			if（rs.next（））{
				b=true;
			}
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
		}finally{
			DBUtil.close（ct）;
		}
		return?b;
	}
	public?boolean?addUser（String?username?String?password）?{
		boolean?b?=?false;
		int?result?=0;
		try?{
			ct?=?DBUtil.getConnection（）;
			ps?=?ct.prepareStatement（“insert?into?lz_user（usernamepassword）values（??）“）;
			ps.setString（1?username）;
			ps.setString（2?password）;
			result?=?ps.executeUpdate（）;
			if（result==1）{
				b=true;
			}
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
		}finally{
			DBUtil.close（ct）;
		}
		return?b;
	}
	public?User?getUser（String?username）?{
		User?u?=?new?User（）;
		try?{
			ct?=?DBUtil.getConnection（）;
			ps?=?ct.prepareStatement（“select?*?from?lz_user?where?username=?“）;
			ps.setString（1?username）;
			rs?=?ps.executeQuery（）;
			if（rs.next（））{
				u.setPassword（rs.getString（“password“））;
				u.setUsername（username）;
			}
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
		}finally{
			DBUtil.close（ct）;
		}
		return?u;
	}
	
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-01-21?20:04??lz_um\
?????文件?????????574??2013-01-21?17:37??lz_um\.classpath
?????目錄???????????0??2013-01-21?20:04??lz_um\.myeclipse\
?????文件?????????285??2013-01-21?18:54??lz_um\.mymetadata
?????文件????????1411??2013-01-21?18:54??lz_um\.project
?????目錄???????????0??2013-01-21?20:04??lz_um\.settings\
?????文件?????????500??2013-01-21?08:43??lz_um\.settings\.jsdtscope
?????文件?????????330??2013-01-21?08:43??lz_um\.settings\org.eclipse.jdt.core.prefs
?????文件??????????49??2013-01-21?08:43??lz_um\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2013-01-21?08:43??lz_um\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2013-01-21?20:04??lz_um\src\
?????目錄???????????0??2013-01-21?20:04??lz_um\src\dao\
?????文件????????1571??2013-01-21?18:24??lz_um\src\dao\UserDao.java
?????目錄???????????0??2013-01-21?20:04??lz_um\src\entity\
?????文件?????????368??2013-01-21?09:09??lz_um\src\entity\User.java
?????目錄???????????0??2013-01-21?20:04??lz_um\src\service\
?????文件?????????635??2013-01-21?18:21??lz_um\src\service\UserService.java
?????目錄???????????0??2013-01-21?20:04??lz_um\src\util\
?????文件?????????700??2013-01-12?10:02??lz_um\src\util\DBUtil.java
?????目錄???????????0??2013-01-21?20:04??lz_um\src\web\
?????文件????????2646??2013-01-21?18:30??lz_um\src\web\ActionServlet.java
?????文件????????2340??2013-01-21?16:33??lz_um\src\web\CheckcodeServlet.java
?????目錄???????????0??2013-01-21?20:04??lz_um\WebRoot\
?????文件?????????321??2013-01-21?09:19??lz_um\WebRoot\error.jsp
?????目錄???????????0??2013-01-21?20:04??lz_um\WebRoot\js\
?????文件?????????197??2013-01-17?14:02??lz_um\WebRoot\js\myjs.js
?????文件??????129738??2013-01-06?11:34??lz_um\WebRoot\js\prototype-1.6.0.3.js
?????文件????????1806??2013-01-21?17:45??lz_um\WebRoot\login.jsp
?????文件?????????464??2013-01-21?18:16??lz_um\WebRoot\main.jsp
?????目錄???????????0??2013-01-21?20:04??lz_um\WebRoot\meta-INF\
?????文件??????????36??2013-01-21?08:43??lz_um\WebRoot\meta-INF\MANIFEST.MF
............此處省略20個文件信息