java之写登录日志

首先，数据库新建两张表：loginlog 字段：id ，userID，logintime，success

第二张：t_table_id 字段table_name,value ；默认写入数据loginlog；0

 

1、Loginlog.java

package com.marcellotest.basedata.domain;
/**
 * 用户登录日志
 * @author Administrator
 *
 */
public class Loginlog {

	

	public String getUserId() {
		return userId;
	}

	public void setUserId(String userId) {
		this.userId = userId;
	}

	public String getLogintime() {
		return logintime;
	}

	public void setLogintime(String logintime) {
		this.logintime = logintime;
	}

	public int getSuccess() {
		return success;
	}

	public void setSuccess(int success) {
		this.success = success;
	}
	

	
	public void setLoginLogID(String loginLogID) {
		LoginLogID = loginLogID;
	}

	public String getLoginLogID() {
		return LoginLogID;
	}



	//主键
	private String LoginLogID;
	
	private String userId;	
	
	private String logintime;
	
	private int success;
}

2、LoginlogManager.java

package com.marcellotest.basedata.manager;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


import com.marcellotest.basedata.domain.Loginlog;
import com.marcellotest.util.DBUtil;
import com.marcellotest.util.generator.IDGenerator;



public class LoginlogManager {
private static LoginlogManager instance = null;
	
	private LoginlogManager() {}
	
	public static synchronized LoginlogManager getInstance() {
		if (instance == null) {
			instance = new LoginlogManager();
		}
		return instance;
	}
	
	
	
	/**
	 * 根据userid查询登录日志
	 * @param userid
	 * @return 如果存在返回返回最后三次登录失败信息，否则返回null
	 */
	public List<String> findUserLOGById(String userID) {
		StringBuffer sbSql = new StringBuffer();
		sbSql.append("select * from loginlog " )
				.append("where userId =?"  )
					.append("and success = 0 " )
					.append("and loginTime like ? ")					
					.append("order by logintime DESC ")
					.append("limit 3 ");
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;		
		Date now = new Date(); 
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
		String today = dateFormat.format(now); 
		List<String> list = new ArrayList<String>();
		try {
			conn = DBUtil.getConnection();
			pstmt = conn.prepareStatement(sbSql.toString());
			pstmt.setString(1, userID);
			pstmt.setString(2,"%"+today+"%");
		
			rs = pstmt.executeQuery();
			
			while(rs.next()){
				list.add(rs.getString("LoginLogID"));
				list.add(rs.getString("userid"));
				list.add(rs.getString("logintime"));
				list.add(rs.getString("success"));
				}
				
		}catch(SQLException e) {
			e.printStackTrace();
		}finally {
			DBUtil.close(rs);
			DBUtil.close(pstmt);
			DBUtil.close(conn);
		}
		//System.out.println(list);
		return list;
	} 
	
	
	/**
	 * 添加log记录到数据库
	 * @param client
	 */
	public void addUserLOG(Loginlog Loginlog) {
		StringBuffer sbsql = new StringBuffer();
		sbsql.append("insert into loginlog ( ")
				   .append("LoginLogID, userID, loginTime, ") 			   
				   .append("success) ") 
				.append("values (? ,? ,?, ?) ");	
		Connection conn = null;
		PreparedStatement pstmt = null;
		Date now = new Date(); 
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String createDate = dateFormat.format(now); 
		try {
			conn = DBUtil.getConnection();
			//开启事务
			DBUtil.setAutoCommit(conn, false);
			pstmt = conn.prepareStatement(sbsql.toString());
			pstmt.setInt(1, (int)IDGenerator.getInstance().newID("loginlog"));	
			pstmt.setString(2, Loginlog.getUserId());
			pstmt.setString(3, createDate);
			pstmt.setInt(4, Loginlog.getSuccess());			
			pstmt.executeUpdate();
			//提交事务
			DBUtil.commit(conn);
		}catch(Exception e) {
			e.printStackTrace();
			//回滚事务
			DBUtil.rollback(conn);
		}finally {
			DBUtil.close(pstmt);
			DBUtil.close(conn);
		}		
	}
	
	

}

 

3、LoginlogUtil.java

package com.marcellotest.util;





import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import com.marcellotest.basedata.domain.Loginlog;
import com.marcellotest.basedata.manager.LoginlogManager;

public class LoginlogUtil {
private static LoginlogUtil instance = null;
	
	private LoginlogUtil() {}
	
	public static synchronized LoginlogUtil getInstance() {
		if (instance == null) {
			instance = new LoginlogUtil();
		}
		return instance;
	}
	
	static Loginlog Loginlog = new Loginlog();
	/**
	 * 添加日志信息
	 * @param userid
	 * @return 
	 */
	public void ADDloginlogItem(Loginlog loginlog)
	{
		
		Loginlog.setUserId(loginlog.getUserId());
		Loginlog.setSuccess(loginlog.getSuccess());
		LoginlogManager.getInstance().addUserLOG(Loginlog);
	}
	
	/**
	 * 判断该用户名是否符合登录要求
	 * 5分钟内输错三次锁住该用户
	 */
	public boolean SelectloginlogItem(Loginlog loginlog){	
		//把查询出来的数据放入list中
		List<String> list = new ArrayList<String>();
		list= LoginlogManager.getInstance().findUserLOGById(loginlog.getUserId());
		boolean flag = false;
		
		System.out.println("个数"+list.size());
		//循环
		//for(String str : list){
		//	  System.out.println(str);
		//	}
		//判断是否含有3行数据，如果没有直接返回true
		if(list.size()<12){
			flag = true;
		}
		else{
		 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		 try {
			//现状的时间
			Date now = new Date();			
			//最后一次输错时间
			Date ErrorOne= df.parse(list.get(2));
			//前三次输错时间
			Date ErrorTree = df.parse(list.get(10));
			//最后一次输错时间和目前尝试登陆时间
			long spaceTIME = now.getTime()-ErrorOne.getTime();
			long spaceTIMEmin = spaceTIME/1000;	
			//最后三次间隔时间
			long DifferTime=ErrorOne.getTime()-ErrorTree.getTime();
			//long day=l/(24*60*60*1000); 
			//long hour=(l/(60*60*1000)-day*24); 
			//long min=((l/(60*1000))-day*24*60-hour*60); 
			// long s=(l/1000-day*24*60*60-hour*60*60-min*60);
			//转换成秒进行比较
			 long s1=DifferTime/1000;
			   //System.out.println(""+day+"天"+hour+"小时"+min+"分"+s+"秒"); 
				 System.out.println(s1);				
			
				 //判断时间是否间隔一个小时
			   if(spaceTIMEmin>=3600)
			   {
				   flag=true;
			   }
			   else{
				   //判断是否5分钟内输入三次错误；
				   if(s1<=300){
					   flag = true; 
				   }
				   else{
					   flag = false;
				   }
			   }
			 
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//String a = list.get(2);
		//System.out.println(a);
		//String b = list.get(10);
		//System.out.println(b);
	}	
		return flag;
	}
	public static void main(String[] args) {
	
	}
		
	
	
}

生成唯一ID：IDGenerator.java

package com.marcellotest.util.generator;

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

import com.marcellotest.util.DBUtil;



/**
 *  id生成器,采用单例模式
 * @author Administrator
 *
 */
public class IDGenerator {
	
	private static IDGenerator instance = new IDGenerator();
	
	private IDGenerator() {}
	
	public static IDGenerator getInstance() {
		return instance;
	}
	
	/**
	 * 生成新id
	 * @param tableName
	 * @return
	 */
	//public synchronized long newID(String tableName) {
		//synchronized(this) {
	public long newID(String tableName) {
		String sql = "select value from t_table_id where table_name=? for update";
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		long value = 0L;
		try {
			conn = DBUtil.getConnection();
			////开启事务
			DBUtil.setAutoCommit(conn, false);
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1, tableName);
			rs = pstmt.executeQuery();
			if (rs.next()) {
				value = rs.getLong("value");
			}else {
				throw new RuntimeException("生成Id出错！");
			}
			value = value + 1;
			
			//更新value
			modifyValueField(conn, tableName, value);
			//提交事务
			DBUtil.commit(conn);
		}catch(Exception e) {
			e.printStackTrace();
			//回滚事务
			DBUtil.rollback(conn);
			throw new RuntimeException("生成Id出错！");
		}finally {
			DBUtil.close(rs);
			DBUtil.close(pstmt);
			DBUtil.close(conn);
		}
		return value;
	}
	
	/**
	 * 更新value
	 * @param conn
	 * @param tableName
	 * @param value
	 * @throws SQLException
	 */
	private void modifyValueField(Connection conn, String tableName, long value) 
	throws SQLException {
		String sql = "update t_table_id set value=? where table_name=?";
		PreparedStatement pstmt = null;
		try {
			pstmt = conn.prepareStatement(sql);
			pstmt.setLong(1, value);
			pstmt.setString(2, tableName);
			pstmt.executeUpdate();
		}finally {
			DBUtil.close(pstmt);
		}
	} 
	
	public static void main(String[] args) {
		long newId = IDGenerator.getInstance().newID("t_client");
		System.out.println(newId);
	}
}

登陆时调用

/**
	 * * 登录(采用非受控异常)
	 * @param userId
	 * @param password
	 */
	public User login(String userId, String password) {
	
		 CipherUtil cipher = new CipherUtil(); 
		 Loginlog loginlog = new Loginlog();
		 loginlog.setUserId(userId);
	//throws UserNotFoundException, PasswordNotCorrectException{ //必须抛出
		 
		User user = findUserById(userId);
		
		if (user == null) {
			System.out.println(user);
			throw new UserNotFoundException("用户代码不能找到，代码=【" + userId +"】");
		}
		//采用加密方式
		if (!user.getPassword().equals(cipher.generatePassword(password))) {
			//调用记录日志函数
			
			loginlog.setSuccess(0);
			LoginlogManager.getInstance().addUserLOG(loginlog);
			throw new PasswordNotCorrectException("密码不正确");
		}
		if(!LoginlogUtil.getInstance().SelectloginlogItem(loginlog)){
			throw new PasswordNotCorrectException("一小时后再试试");
		}
			
		
		System.out.println("user");
		//调用记录日志函数
		loginlog.setSuccess(1);
		LoginlogManager.getInstance().addUserLOG(loginlog);
		return user;		
	}

有些人会说写入日志时在调用时：

 loginlog.setUserId(userId);
loginlog.setSuccess(1);

业务逻辑层又一次，为什么不直接登陆时候直接调用；这边是为了把这些都分开，如果大公司，业务层，逻辑层都是分开的，就是说你登陆只能调用逻辑层；

 最后调用时候的抛出异常类我没有继续写了，如果有需要根据实际情况写抛出；