PHP自学之路---雇员管理系统(2)

    这个章节将讲解分层模式对雇员管理系统的系统,首先看下基本的流程图设计:



下面是具体的代码:

1、login.php(参照上节)
2、loginProcess.php
<?php
/**
 *
 * @author jsh
 * @version 
 */
  
    require_once 'AdminService.class.php';
    //接受用户数据 
    $id=$_POST['id'];
    $password=$_POST['password'];
    
    //实例化对象
    $adminService=new AdminService();
    
    if(($name=$adminService->checkAdmin($id, $password)) != ""){
    		header("Location:https://192.168.1.110/myphp/manage/empManage.php?name=$name");
    		exit();
    } else {
    	header("Location:https://192.168.1.110/myphp/manage/login.php?errno=1");
    	exit();
    }    
 ?>


3、empmain.php(参照上节)
4、empList.php
<html>
<head>
<meta http-equiv="content-tpe" content="text/html;charset-utf-8"/>
<title>雇员管理列表</title>
<script type="text/javascript">
<!--
    function check(){
       return window.confirm("是否要删除用户");
    }
//-->  
</script>
</head>



<?php
   include_once 'EmpService.class.php';   
   include_once 'FenyePage.class.php';
    /*
    $pageNow :显示第几页:用户输入
    $pageCount:共有几页[]
    $rowCount:共有多少条记录[数据库获取]
    $pagesize:每页显示几条记录[人为定义]
    */
   
   if(!empty($_GET['flag'])){
       $id=$_GET['Id'];
       $empservice=new empService();
       $empservice->delUserById($id);
   }
   if(!empty($_GET['pageNow'])){
   	$pageNow = $_GET['pageNow'];
   } else {
   	$pageNow = 1;
   }
   
   $fenyePage=new fenyepage();
   $fenyePage->pageSize = 3;
   $fenyePage->pageNow = $pageNow;
   $fenyePage->page_num=3;
   
    //获取共有多少记录
    $empservice=new empService();
    $pageCount=$empservice->getFenYePageInfo($fenyePage);
    echo "<h1>雇员管理系统</h1>";
    echo "<table width='700px' border='1px'>";
    echo "<tr><th>Id</th><th>Name</th><th>Grade</th><th>Email</th><th>Salary</th><th>删除用户</th><th>修改用户</th></tr>";
    
    
    for($i=0;$i<count($fenyePage->res_array);$i++){
    	$row=$fenyePage->res_array[$i];
    	echo "<tr><th>{$row['Id']}</th><th>{$row['Name']}</th><th>{$row['Grade']}</th>".
    			"<th>{$row['Email']}</th><th>{$row['Salary']}</th><th><a onclick='return check()' href='empList.php?flag=1&Id={$row['Id']}'>删除用户</a></th>".
    			"<th><a href='empList.php?pageNow={$row['Id']}'>修改用户</a></th></tr>";
    }
    echo "</table>";
    
    echo $fenyePage->navigation_bars;
  /*   //打印上一页下一页
    if($fenyePage->pageNow>1){
        $prepage = $fenyePage->pageNow - 1;
        echo "<a href='empList.php?pageNow=$prepage'>上一页</a>";
    }
    if($fenyePage->pageNow<$fenyePage->pageCount){
        $nextpage = $fenyePage->pageNow + 1;
        echo "<a href='empList.php?pageNow=$nextpage'>下一页</a>";
    }
    
    //翻页
    $start=floor(($fenyePage->pageNow - 1)/$fenyePage->page_num) * $fenyePage->page_num + 1;
    $index = $start;
    
    for(;$start < $fenyePage->pageCount && $start<$index + $fenyePage->page_num;$start++){
    	echo "<a href='empList.php?pageNow=$start'>[$start]</a>";
    }
    //显示当前页和共有多少页
    echo "  当前页{$fenyePage->pageNow}/共{$fenyePage->pageCount}页";
     */
   
?>
<!--     指定跳转到某页 -->
    <form action="empList.php" method="get">
    
          跳转到:<input type="text" name="pageNow"/>
    <input type="submit" value="GO"/>
    </form>
    
</html>

5、AdminService.class.php
<?php
    //该类是一个业务逻辑处理类,
    require_once 'SqlHelper.class.php';
    class AdminService {
    	//提供一个验证用户是否合法的方法
    	
    	public function checkAdmin($id,$password){
    		$sql="select * from admin where Id=$id";
    		
    		//创建一个SqlHelper对象
    		$sqlHelper=new SqlHelper();
    		//执行查询命令
    		$res=$sqlHelper->execute_dql($sql);
    		if($row=mysql_fetch_assoc($res)){
    			if(md5($password) == $row['Password']){
    				
    				return $row['Name'];
    			}
    		}
    		//释放资源
    		mysql_free_result($res);
    		//关闭链接
    		$sqlHelper->close_connect();
    		
    		return "";
    	}
    	
    	
    }

?>

6、empService.class.php
<?php
    require_once 'SqlHelper.class.php';
    class empService {
    	   
        //一个函数可以获得多少页
        function getPageCount($pagesize){
    	    //需要查询$rowcount
    	    $sql="select count(Id) from emp";
    	    $sqlHelper=new SqlHelper();
    	    $result=$sqlHelper->execute_dql($sql);
    	
    	    if($row=mysql_fetch_row($result)){
    		    $pageCount=ceil($row[0]/$pagesize);
    	    }
    	    //释放资源
    	    mysql_free_result($result);
    	    //关闭连接
    	    $sqlHelper->close_connect();
    	    return $pageCount;
        }
        
        //获得当前页的雇员信息
        function getEmpListByPage($pageNow,$pageSize){
        	$sql="select * from emp limit ".($pageNow-1)*$pageSize.",$pageSize";
        	 
        	$sqlHelper=new SqlHelper();
        	$res=$sqlHelper->execute_dql2($sql);
        	
        	//关闭连接
        	$sqlHelper->close_connect();
        
        	return $res;
        }
        //分页
        public function getFenYePageInfo($fenyePage){
        	$sqlHelper=new SqlHelper();
        	$sql1="select * from emp limit ".($fenyePage->pageNow - 1)*$fenyePage->pageSize.",$fenyePage->pageSize";
            $sql2="select count(Id) from emp";
            $php_name="empList.php";
            $sqlHelper->exectue_dql_fenye($sql1, $sql2, $fenyePage,$php_name);
            //关闭链接
            $sqlHelper->close_connect();
            return $fenyePage;
            
        }
        
        //删除用户
        public function delUserById($id){
        	$sql="delete from emp where Id='$id'";
        	$sqlHelper = new SqlHelper();
        	$res=$sqlHelper->execute_dml($sql);
        	return $res;
        }
    }
?>

7、SqlHelper.class.php
<?php
    //这是一个工具类,作用是完成对数据库的基本操作
    class SqlHelper {
        public $conn;
        public $dbname="manage";
        public $usename="root";
        public $password="";
        public $host="192.168.1.110:3306";
        
        //构造方法,连接及选择数据库
        public function __construct(){
        	$this->conn=mysql_connect($this->host,$this->usename,$this->password);
            if(!$this->conn){
            	die("连接失败".mysql_error());
            }
            mysql_select_db($this->dbname,$this->conn);
        }
        
        //执行dql语句  查询
        public function execute_dql($sql){
        	$res=mysql_query($sql,$this->conn) or die("执行失败".mysql_error());
        	return $res;
        }
        
        //省去资源释放的
        public function execute_dql2($sql){
        	$res=mysql_query($sql,$this->conn) or die("执行失败".mysql_error());
        	$arr=array();
        	$i=0;
        	while ($row=mysql_fetch_assoc($res)){
        		
        		$arr[$i++]=$row;
        	}
        	//释放资源
        	mysql_free_result($res);
        	return $arr;
        }
        
        /*    考虑分页情况的查询
        $sql1="select count(Id) from 表名";
        $sql2="select * from 表名 limit x,y"; */
        public function exectue_dql_fenye($sql1,$sql2,&$fenyePage,$php_name){
        	$navigation_bars="";
        	$res=mysql_query($sql1,$this->conn) or die("执行失败".mysql_error());
        	$arr=array();
        	$i=0;
        	while ($row=mysql_fetch_assoc($res)){
        		$arr[$i++]=$row;
        	}
        	//释放资源
    	    mysql_free_result($res);
    	    
    	    //获得数据库共有多少行
        	$res=mysql_query($sql2,$this->conn) or die(mysql_errno());
            if($row=mysql_fetch_row($res)){
    		    $fenyePage->row_Count=$row[0];
    	    }
    	    
    	    $fenyePage->res_array=$arr;
    	    //共有多少页
    	    $fenyePage->pageCount = ceil($fenyePage->row_Count/$fenyePage->pageSize);   	    
    	    //释放资源
    	    mysql_free_result($res);
    	    
    	    if($fenyePage->pageNow>1){
    	    	$prepage = $fenyePage->pageNow - 1;
    	    	$navigation_bars="<a href='$php_name?pageNow=$prepage'>上一页</a>";
    	    }
    	    if($fenyePage->pageNow<$fenyePage->pageCount){
    	        $nextpage = $fenyePage->pageNow + 1;
    	        $navigation_bars .= "<a href='$php_name?pageNow=$nextpage'>下一页</a>";
    	    }
    	    
    	    //翻页
    	    $start=floor(($fenyePage->pageNow - 1)/$fenyePage->page_num) * $fenyePage->page_num + 1;
    	    $index = $start;
    	    if($fenyePage->pageNow > $fenyePage->page_num){
    	    	$navigation_bars .="<a href='$php_name?pageNow=".($start-1)."'> << </a>";
    	    }
    	    for(;$start < $fenyePage->pageCount && $start<$index + $fenyePage->page_num;$start++){
    	        $navigation_bars .= "<a href='$php_name?pageNow=$start'>[$start]</a>";
    	    }
    	    $navigation_bars .="<a href='$php_name?pageNow=".($start+1)."'> << </a>";
    	    //显示当前页和共有多少页
    	    $navigation_bars .= "  当前页{$fenyePage->pageNow}/共{$fenyePage->pageCount}页";
    	    $fenyePage->navigation_bars=$navigation_bars;
        }
        
        //执行DML语句 更新 删除 添加
        public function execute_dml($sql){
        	$b=mysql_query($sql,$this->conn);
        	if(!$b){
        		return 0;//失败
        	} else {
        		if(mysql_affected_rows($this->conn)){
        			return 1;//执行成功
        		}else{
        			return 2;//表示没有行发生变化
        		}
        	}
        }
        
        
        //关闭连接的方法
        public function close_connect(){
        	if($this->conn){
        		mysql_close($this->conn);
        	}
        }  
    }
?>
8、fenyepage.class.php
<?php
    class fenyepage{
    	public $pageSize; //每页显示的行数
    	public $pageNow;  //当前页
    	public $pageCount; //共有多少页。计算得到
    	public $res_array;//显示数据,数据库获得
    	public $row_Count; //共有多少行,数据库获得
    	public $page_num;  //翻页数
    	public $navigation_bars;//导航条
    }
?>

下面展示的是一个主要的页面:



 

posted @ 2013-07-16 20:06  坚固66  阅读(329)  评论(0编辑  收藏  举报