hotelbook-JavaWeb-master/src/main/java/com/inks/hb/logInfo/dao/LogInfoDao.java

package com.inks.hb.logInfo.dao;

import com.inks.hb.common.CommonDao;
import com.inks.hb.common.DBUtil;
import com.inks.hb.logInfo.pojo.LogInfo;

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

public class LogInfoDao implements CommonDao {
    // 实现CommonDao接口，用于操作logInfo表
    @Override
    public void insertData(Object o) throws SQLException {
        // 插入数据
        LogInfo logInfo = (LogInfo) o;

        Connection conn = DBUtil.getConnection();
        String sql = "INSERT INTO logInfo (logName, loginId,loginName, logDate) VALUE (?,?,?,?)";
        PreparedStatement ps = conn.prepareStatement(sql);
        ps.setString(1, logInfo.getLogName());
        ps.setInt(2, logInfo.getLoginId());
        ps.setString(3, logInfo.getLoginName());
        ps.setString(4, logInfo.getLogDate());

        ps.executeUpdate();
        ps.close();
    }

    @Override
    public void deleteData(Object o) throws SQLException {
        // 删除数据
        LogInfo logInfo = (LogInfo) o;

        Connection conn = DBUtil.getConnection();
        String sql = "DELETE FROM logInfo WHERE logId = ?";
        PreparedStatement ps = conn.prepareStatement(sql);
        ps.setInt(1, logInfo.getLogId());

        ps.executeUpdate();
        ps.close();
    }

    @Override
    public void updateData(Object o) throws SQLException {

        // 更新数据
    }

    @Override
    public int queryDataNum() throws SQLException {
        // 查询数据数量
        Connection conn = DBUtil.getConnection();

        String sql = "select count(*) from logInfo;";
        PreparedStatement pstmt = conn.prepareStatement(sql);
        ResultSet rs = pstmt.executeQuery();

        int num;
        if (rs.next()) num = rs.getInt("count(*)");
        else num = 0;

        rs.close();
        pstmt.close();

        return num;
    }

    @Override
    public ArrayList query(int start, int length) throws SQLException {

        // 查询数据
        Connection conn = DBUtil.getConnection();

        String sql = "select * from logInfo limit ?, ?;";
        PreparedStatement pstmt = conn.prepareStatement(sql);
        pstmt.setInt(1, start - 1);
        pstmt.setInt(2, length);
        ResultSet rs = pstmt.executeQuery();

        ArrayList<LogInfo> list = new ArrayList<>();
        LogInfo logInfo;

        while (rs.next()) {
            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
                    rs.getInt(3), rs.getString(4), rs.getString(5));
            list.add(logInfo);
        }

        rs.close();
        pstmt.close();

        return list;
    }

    @Override
    public Object query(Object o) throws SQLException {
        // 查询数据
        return null;
    }

    public ArrayList queryName(int loginId) throws SQLException {
        // 根据loginId查询数据
        Connection conn = DBUtil.getConnection();
        String sql = "SELECT * FROM logInfo WHERE loginId = ?";
        PreparedStatement ps = conn.prepareStatement(sql);
        ps.setInt(1, loginId);
        ResultSet rs = ps.executeQuery();
        ArrayList<LogInfo> list = new ArrayList<>();
        LogInfo logInfo;
        while (rs.next()) {
            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
                    rs.getInt(3), rs.getString(4), rs.getString(5));
            list.add(logInfo);
        }
        rs.close();
        ps.close();
        return list;
    }
}
//package com.inks.hb.logInfo.dao;
//
//import com.inks.hb.common.CommonDao;
//import com.inks.hb.common.DBUtil;
//import com.inks.hb.logInfo.pojo.LogInfo;
//
//import java.sql.Connection;
//import java.sql.PreparedStatement;
//import java.sql.ResultSet;
//import java.sql.SQLException;
//import java.util.ArrayList;
//
//public class LogInfoDao implements CommonDao {
//    // 实现CommonDao接口，用于操作logInfo表
//    @Override
//    public void insertData(Object o) throws SQLException {
//        // 插入数据
//        LogInfo logInfo = (LogInfo) o;
//
//        Connection conn = DBUtil.getConnection();
//        String sql = "INSERT INTO logInfo (logName, loginId,loginName, logDate) VALUE (?,?,?,?)";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setString(1, logInfo.getLogName());
//        ps.setInt(2, logInfo.getLoginId());
//        ps.setString(3, logInfo.getLoginName());
//        ps.setString(4, logInfo.getLogDate());
//
//        ps.executeUpdate();
//        ps.close();
//    }
//
//    @Override
//    public void deleteData(Object o) throws SQLException {
//        // 删除数据
//        LogInfo logInfo = (LogInfo) o;
//
//        Connection conn = DBUtil.getConnection();
//        String sql = "DELETE FROM logInfo WHERE logId = ?";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setInt(1, logInfo.getLogId());
//
//        ps.executeUpdate();
//        ps.close();
//    }
//
//    @Override
//    public void updateData(Object o) throws SQLException {
//
//        // 更新数据
//    }
//
//    @Override
//    public int queryDataNum() throws SQLException {
//        // 查询数据数量
//        Connection conn = DBUtil.getConnection();
//
//        String sql = "select count(*) from logInfo;";
//        PreparedStatement pstmt = conn.prepareStatement(sql);
//        ResultSet rs = pstmt.executeQuery();
//
//        int num;
//        if (rs.next()) num = rs.getInt("count(*)");
//        else num = 0;
//
//        rs.close();
//        pstmt.close();
//
//        return num;
//    }
//
//    @Override
//    public ArrayList query(int start, int length) throws SQLException {
//
//        // 查询数据
//        Connection conn = DBUtil.getConnection();
//
//        String sql = "select * from logInfo limit ?, ?;";
//        PreparedStatement pstmt = conn.prepareStatement(sql);
//        pstmt.setInt(1, start - 1);
//        pstmt.setInt(2, length);
//        ResultSet rs = pstmt.executeQuery();
//
//        ArrayList<LogInfo> list = new ArrayList<>();
//        LogInfo logInfo;
//
//        while (rs.next()) {
//            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
//                    rs.getInt(3), rs.getString(4), rs.getString(5));
//            list.add(logInfo);
//        }
//
//        rs.close();
//        pstmt.close();
//
//        return list;
//    }
//
//    @Override
//    public Object query(Object o) throws SQLException {
//        // 查询数据
//        return null;
//    }
//
//    public ArrayList queryName(int loginId) throws SQLException {
//        // 根据loginId查询数据
//        Connection conn = DBUtil.getConnection();
//        String sql = "SELECT * FROM logInfo WHERE loginId = ?";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setInt(1, loginId);
//        ResultSet rs = ps.executeQuery();
//        ArrayList<LogInfo> list = new ArrayList<>();
//        LogInfo logInfo;
//        while (rs.next()) {
//            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
//                    rs.getInt(3), rs.getString(4), rs.getString(5));
//            list.add(logInfo);
//        }
//        rs.close();
//        ps.close();
//        return list;
//    }
//}
//package com.inks.hb.logInfo.dao;
//
//import com.inks.hb.common.CommonDao;
//import com.inks.hb.common.DBUtil;
//import com.inks.hb.logInfo.pojo.LogInfo;
//
//import java.sql.Connection;
//import java.sql.PreparedStatement;
//import java.sql.ResultSet;
//import java.sql.SQLException;
//import java.util.ArrayList;
//
//public class LogInfoDao implements CommonDao {
//    // 实现CommonDao接口，用于操作logInfo表
//    @Override
//    public void insertData(Object o) throws SQLException {
//        // 插入数据
//        LogInfo logInfo = (LogInfo) o;
//
//        Connection conn = DBUtil.getConnection();
//        String sql = "INSERT INTO logInfo (logName, loginId,loginName, logDate) VALUE (?,?,?,?)";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setString(1, logInfo.getLogName());
//        ps.setInt(2, logInfo.getLoginId());
//        ps.setString(3, logInfo.getLoginName());
//        ps.setString(4, logInfo.getLogDate());
//
//        ps.executeUpdate();
//        ps.close();
//    }
//
//    @Override
//    public void deleteData(Object o) throws SQLException {
//        // 删除数据
//        LogInfo logInfo = (LogInfo) o;
//
//        Connection conn = DBUtil.getConnection();
//        String sql = "DELETE FROM logInfo WHERE logId = ?";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setInt(1, logInfo.getLogId());
//
//        ps.executeUpdate();
//        ps.close();
//    }
//
//    @Override
//    public void updateData(Object o) throws SQLException {
//
//        // 更新数据
//    }
//
//    @Override
//    public int queryDataNum() throws SQLException {
//        // 查询数据数量
//        Connection conn = DBUtil.getConnection();
//
//        String sql = "select count(*) from logInfo;";
//        PreparedStatement pstmt = conn.prepareStatement(sql);
//        ResultSet rs = pstmt.executeQuery();
//
//        int num;
//        if (rs.next()) num = rs.getInt("count(*)");
//        else num = 0;
//
//        rs.close();
//        pstmt.close();
//
//        return num;
//    }
//
//    @Override
//    public ArrayList query(int start, int length) throws SQLException {
//
//        // 查询数据
//        Connection conn = DBUtil.getConnection();
//
//        String sql = "select * from logInfo limit ?, ?;";
//        PreparedStatement pstmt = conn.prepareStatement(sql);
//        pstmt.setInt(1, start - 1);
//        pstmt.setInt(2, length);
//        ResultSet rs = pstmt.executeQuery();
//
//        ArrayList<LogInfo> list = new ArrayList<>();
//        LogInfo logInfo;
//
//        while (rs.next()) {
//            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
//                    rs.getInt(3), rs.getString(4), rs.getString(5));
//            list.add(logInfo);
//        }
//
//        rs.close();
//        pstmt.close();
//
//        return list;
//    }
//
//    @Override
//    public Object query(Object o) throws SQLException {
//        // 查询数据
//        return null;
//    }
//
//    public ArrayList queryName(int loginId) throws SQLException {
//        // 根据loginId查询数据
//        Connection conn = DBUtil.getConnection();
//        String sql = "SELECT * FROM logInfo WHERE loginId = ?";
//        PreparedStatement ps = conn.prepareStatement(sql);
//        ps.setInt(1, loginId);
//        ResultSet rs = ps.executeQuery();
//        ArrayList<LogInfo> list = new ArrayList<>();
//        LogInfo logInfo;
//        while (rs.next()) {
//            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
//                    rs.getInt(3), rs.getString(4), rs.getString(5));
//            list.add(logInfo);
//        }
//        rs.close();
//        ps.close();
//        return list;
//    }
//}
////package com.inks.hb.logInfo.dao;
////
////import com.inks.hb.common.CommonDao;
////import com.inks.hb.common.DBUtil;
////import com.inks.hb.logInfo.pojo.LogInfo;
////
////import java.sql.Connection;
////import java.sql.PreparedStatement;
////import java.sql.ResultSet;
////import java.sql.SQLException;
////import java.util.ArrayList;
////
////public class LogInfoDao implements CommonDao {
////    // 实现CommonDao接口，用于操作logInfo表
////    @Override
////    public void insertData(Object o) throws SQLException {
////        // 插入数据
////        LogInfo logInfo = (LogInfo) o;
////
////        Connection conn = DBUtil.getConnection();
////        String sql = "INSERT INTO logInfo (logName, loginId,loginName, logDate) VALUE (?,?,?,?)";
////        PreparedStatement ps = conn.prepareStatement(sql);
////        ps.setString(1, logInfo.getLogName());
////        ps.setInt(2, logInfo.getLoginId());
////        ps.setString(3, logInfo.getLoginName());
////        ps.setString(4, logInfo.getLogDate());
////
////        ps.executeUpdate();
////        ps.close();
////    }
////
////    @Override
////    public void deleteData(Object o) throws SQLException {
////        // 删除数据
////        LogInfo logInfo = (LogInfo) o;
////
////        Connection conn = DBUtil.getConnection();
////        String sql = "DELETE FROM logInfo WHERE logId = ?";
////        PreparedStatement ps = conn.prepareStatement(sql);
////        ps.setInt(1, logInfo.getLogId());
////
////        ps.executeUpdate();
////        ps.close();
////    }
////
////    @Override
////    public void updateData(Object o) throws SQLException {
////
////        // 更新数据
////    }
////
////    @Override
////    public int queryDataNum() throws SQLException {
////        // 查询数据数量
////        Connection conn = DBUtil.getConnection();
////
////        String sql = "select count(*) from logInfo;";
////        PreparedStatement pstmt = conn.prepareStatement(sql);
////        ResultSet rs = pstmt.executeQuery();
////
////        int num;
////        if (rs.next()) num = rs.getInt("count(*)");
////        else num = 0;
////
////        rs.close();
////        pstmt.close();
////
////        return num;
////    }
////
////    @Override
////    public ArrayList query(int start, int length) throws SQLException {
////
////        // 查询数据
////        Connection conn = DBUtil.getConnection();
////
////        String sql = "select * from logInfo limit ?, ?;";
////        PreparedStatement pstmt = conn.prepareStatement(sql);
////        pstmt.setInt(1, start - 1);
////        pstmt.setInt(2, length);
////        ResultSet rs = pstmt.executeQuery();
////
////        ArrayList<LogInfo> list = new ArrayList<>();
////        LogInfo logInfo;
////
////        while (rs.next()) {
////            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
////                    rs.getInt(3), rs.getString(4), rs.getString(5));
////            list.add(logInfo);
////        }
////
////        rs.close();
////        pstmt.close();
////
////        return list;
////    }
////
////    @Override
////    public Object query(Object o) throws SQLException {
////        // 查询数据
////        return null;
////    }
////
////    public ArrayList queryName(int loginId) throws SQLException {
////        // 根据loginId查询数据
////        Connection conn = DBUtil.getConnection();
////        String sql = "SELECT * FROM logInfo WHERE loginId = ?";
////        PreparedStatement ps = conn.prepareStatement(sql);
////        ps.setInt(1, loginId);
////        ResultSet rs = ps.executeQuery();
////        ArrayList<LogInfo> list = new ArrayList<>();
////        LogInfo logInfo;
////        while (rs.next()) {
////            logInfo = new LogInfo(rs.getInt(1), rs.getString(2),
////                    rs.getInt(3), rs.getString(4), rs.getString(5));
////            list.add(logInfo);
////        }
////        rs.close();
////        ps.close();
////        return list;
////    }
////}