userinfo.java

该项目采用Struts框架

package com.cattsoft.daoImpl;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import com.cattsoft.DB.DBUtil;
import com.cattsoft.dao.UserInfoServer;
import com.cattsoft.vo.User;

public class UserInfo implements UserInfoServer {
	private static final String SQL_ADD_USER = "insert into user(name, username, password, birthday, "
			+ "position, hiredate, experience, major, sex, degree, role_id) values(?,?,?,?,?,?,?,?,?,?,?)";
	private static final String SQL_QUERY_USER = "select * from user where username=?";
	private static final String SQL_QUERY_BY_USER = "select count(*) from user where username=? and password=? and role_id=?";
	private static final String SQL_QUERY_ALL_USER = "select * from user";
	private static final String SQL_DELETE_USER = "delete from user where user_id = ?";
	private static final String SQL_QUERY_BY_USERID = "select count(*) from user where username=?";
	private static final String SQL_QUERY_ALL_EMPLOYEE = "select * from user where role_id = 'C'";
	private static final String SQL_QUERY_ALL_MANAGER = "select user_id,name from user where role_id = 'B'";
	private static final String SQL_UPDATE_USER = "update user set manager_name = ?,manager_id = ? where user_id = ?";
	private static final String SQL_QUERY_BY = "select name from user where user_id = ?";
	private static final String SQL_QUERY_NAME_BY = "select name from user where username = ?";
	private static final String SQL_QUERY_USERID_BY = "select user_id from user where username = ?";
	
	DBUtil db = new DBUtil(); // 实例化一个数据库连接对象
	PreparedStatement pstmt = null; // 初始化数据库操作语句对象
	ResultSet rs = null; // 初始化结果集对象

	// 新增用户
	public int addUser(User user) throws ClassNotFoundException, SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_ADD_USER);
		pstmt.setString(1, user.getName());
		pstmt.setString(2, user.getUsername());
		pstmt.setString(3, user.getPassword());
		pstmt.setString(4, user.getBirthday());
		pstmt.setString(5, user.getPosition());
		pstmt.setString(6, user.getHiredate());
		pstmt.setString(7, user.getExperience());
		pstmt.setString(8, user.getMajor());
		pstmt.setString(9, user.getSex());
		pstmt.setString(10, user.getDegree());
		pstmt.setString(11, user.getRole_id());
		int i = pstmt.executeUpdate();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return i;
	}

	// 根据用户名查询用户详细信息
	public List<User> queryAll(String uname) throws ClassNotFoundException,
			SQLException {
		List<User> list = new ArrayList<User>();
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_USER);
		pstmt.setString(1, uname);
		rs = pstmt.executeQuery();
		while (rs.next()) {
			User user = new User();
			user.setUser_id(rs.getInt(1));
			user.setUsername(rs.getString(2));
			user.setPassword(rs.getString(3));
			user.setBirthday(rs.getString(4));
			user.setPosition(rs.getString(5));
			user.setHiredate(rs.getString(6));
			user.setExperience(rs.getString(7));
			user.setMajor(rs.getString(8));
			user.setDegree(rs.getString(9));
			user.setRole_id(rs.getString(10));
			user.setSex(rs.getString(11));
			user.setManager_name(rs.getString(12));
			user.setName(rs.getString(13));
			user.setManager_id(rs.getInt(14));
			list.add(user);
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return list;
	}

	// 根据用户名、密码、角色去查询用户信息
	public boolean queryBy(String username, String password, String role_id)
			throws ClassNotFoundException, SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_BY_USER);
		pstmt.setString(1, username);
		pstmt.setString(2, password);
		pstmt.setString(3, role_id);
		rs = pstmt.executeQuery();
		rs.next();
		int n = rs.getInt(1);
		if (n!=0) {
			return true;
		} else {
			return false;
		}		
	}
	
	//查询所有人员信息
	public List<User> queryAll() throws ClassNotFoundException, SQLException {
		List<User> list = new ArrayList<User>();
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_ALL_USER);
		rs = pstmt.executeQuery();
		while(rs.next()){
			User user = new User();
			user.setUser_id(rs.getInt(1));
			user.setUsername(rs.getString(2));
			user.setPassword(rs.getString(3));
			user.setBirthday(rs.getString(4));
			user.setPosition(rs.getString(5));
			user.setHiredate(rs.getString(6));
			user.setExperience(rs.getString(7));
			user.setMajor(rs.getString(8));
			user.setDegree(rs.getString(9));
			user.setRole_id(rs.getString(10));
			user.setSex(rs.getString(11));
			user.setManager_name(rs.getString(12));
			user.setName(rs.getString(13));
			user.setManager_id(rs.getInt(14));
			list.add(user);
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return list;
	}
	
	//根据用户id删除对应的所有信息
	public void deleteUser(int user_id) throws ClassNotFoundException,
			SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_DELETE_USER);
		pstmt.setInt(1,user_id);
		pstmt.executeUpdate();
		pstmt.close();	
		db.connectionClose(db.getConnection());
	}
	
	//根据用户名判断是否已经存在
	public boolean queryBy(String uname) throws ClassNotFoundException,
			SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_BY_USERID);
		pstmt.setString(1, uname);
		rs = pstmt.executeQuery();
		rs.next();
		int n = rs.getInt(1);
		if (n!=0) {
			return true;
		} else {
			return false;
		}
	}
	
	//查询所有员工信息
	public List<User> queryAllEmployee() throws ClassNotFoundException,
			SQLException {
		List<User> list = new ArrayList<User>();
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_ALL_EMPLOYEE);
		rs = pstmt.executeQuery();
		while(rs.next()){
			User user = new User();
			user.setUser_id(rs.getInt(1));
			user.setUsername(rs.getString(2));
			user.setPassword(rs.getString(3));
			user.setBirthday(rs.getString(4));
			user.setPosition(rs.getString(5));
			user.setHiredate(rs.getString(6));
			user.setExperience(rs.getString(7));
			user.setMajor(rs.getString(8));
			user.setDegree(rs.getString(9));
			user.setRole_id(rs.getString(10));
			user.setSex(rs.getString(11));
			user.setManager_name(rs.getString(12));
			user.setName(rs.getString(13));
			user.setManager_id(rs.getInt(14));
			list.add(user);
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return list;
	}

	//查询出所有主管的id和姓名
	public List<User> queryAllManager() throws ClassNotFoundException,
			SQLException {
		List<User> list = new ArrayList<User>();
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_ALL_MANAGER);
		rs = pstmt.executeQuery();
		while(rs.next()){
			User user = new User();
			user.setUser_id(rs.getInt(1));
			user.setName(rs.getString(2));
			list.add(user);
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return list;
	}
	
	//根据用户id和主管id更新对应的用户信息
	public void update(int user_id, int managerId ,String manager_name)
			throws ClassNotFoundException, SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_UPDATE_USER);
		pstmt.setString(1,manager_name);
		pstmt.setInt(2,managerId);
		pstmt.setInt(3,user_id);		
		pstmt.executeUpdate();
		pstmt.close();
		db.connectionClose(db.getConnection());
	}

	//根据主管id查询其姓名
	public String queryBy(int managerId) throws ClassNotFoundException,
			SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_BY);
		pstmt.setInt(1,managerId);
		rs = pstmt.executeQuery();
		User user = new User();		
		while(rs.next()){
			user.setName(rs.getString(1));
		}		
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return user.getName();
	}

	//根据用户名查询其姓名
	public String queryNameBy(String username) throws ClassNotFoundException,
			SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_NAME_BY);
		pstmt.setString(1,username);
		rs = pstmt.executeQuery();
		User user = new User();
		while(rs.next()){
			user.setName(rs.getString(1));
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return user.getName();
	}

	//根据用户名查询其用户id
	public int queryUserIdBy(String username) throws ClassNotFoundException,
			SQLException {
		pstmt = db.getConnection().prepareStatement(SQL_QUERY_USERID_BY);
		pstmt.setString(1,username);
		rs = pstmt.executeQuery();
		User user = new User();
		while(rs.next()){
			user.setUser_id(rs.getInt(1));
		}
		rs.close();
		pstmt.close();
		db.connectionClose(db.getConnection());
		return user.getUser_id();
	}

}