php的ajax框架xajax入门与试用介绍

2015-01-24信息快讯网
一、xajax与其它ajax框架的比较
xajax功能很简单,但很灵活!~它不象其它一些大的框架,功能确实强大,但执行速度不敢恭维。。功能虽多,但不够灵活。api多,学起来简直如同学习一门新的语言。
二、xajax功能介绍
xajax的功能比较简单,但就因为简单,所以灵活。同时,这也要求使用者要对javascrīpt / vbs 客户端脚本有一定的了解。因为它的功能是比较活的。可以说单纯使用xajax,什么也做不出,但配合js / vbs 又什么都做的出。
xajax主要是使用xajaxResponse这个类,它提供了一些方法,举例如下:
1、addAlert($sMsg)
弹出警告
2、addscrīpt($sJS)
执行某段js
3、$objResponse->addAssign("","","")
给页面中的某个元素附值,或者修改其属性
等等。。。。

所以xajax不是死的,它不能做出XXX XXX功能来,但是它可以灵活的控制客户端的js / vbs,去完成我们要实现的效果。

三、xajax安装配置
不需要特别的安装和配置,只要下载其文件包,解压到网站目录中
下载地址:
http://www.xajaxproject.org/

四、用xajax做会员注册和登陆
1、数据库
采用mysql5.0,数据库名zl 表名zl_user 表结构
id int(11) auto_increment
zl_user varchar(50)
zl_pwd varchar(50)
email varchar(50)

http://blog.knowsky.com/

2、reg.php 注册文件(内有说明)
 
<?php 
require_once("inc/xajax.inc.php"); 
//使用xajax则必须首先引入xajax.inc.php 
$xajax = new xajax("inc/signup.php"); 
//创建一个xajax对象,为singup.php 
$xajax->registerFunction("processForm"); 
//使用singup.php里的processForm函数 
?> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<link rel="stylesheet" href="http://blogbeta.blueidea.com/css/style.css" _fcksavedurl=""http://blogbeta.blueidea.com/css/style.css"" type="text/css"> 
<title>无标题文档</title> 
<?php $xajax->printJavascrīpt('inc/'); ?> 
<scrīpt type="text/javascrīpt"> 
function submitSignup() 
{ 
xajax.$('submitButton').disabled=true; 
xajax.$('submitButton').value="http://blogbeta.blueidea.com/wait..."; 
//修改id为submitButton的属性 
xajax_processForm(xajax.getFormValues("signupForm")); 
//这里xajax_ 后面跟要使用哪个函数这里是 processForm,后面跟的是signupForm这个表单各项的集合 
return false; 
} 
</scrīpt> 
</head> 
<body><form id="signupForm" action="javascrīpt:void(null);" ōnSubmit="submitSignup();"> 
<div id="main"> 
<div id="m1">用 户 注 册</div> 
<div id="formDiv"> 
<table width="100%" border="0" cellspacing="0" cellpadding="5"> 
<tr> 
<td align="right"> </td> 
<td> </td> 
</tr> 
<tr> 
<td width="31%" align="right">用户名:</td> 
<td width="69%"><input name="usr" type="text" id="usr" /> 
*</td> 
</tr> 
<tr> 
<td align="right">密码:</td> 
<td><input name="pwd" type="password" id="pwd" /> 
*</td> 
</tr> 
<tr> 
<td align="right">密码:</td> 
<td><input name="pwd2" type="password" id="pwd2" /> 
*</td> 
</tr> 
<tr> 
<td align="right">Email:</td> 
<td><input name="email" type="text" id="email" /> 
* 可用于找回密码</td> 
</tr> 
<tr align="center"> 
<td colspan="2"><input type="submit" name="submitButton" value="提交" class="button" /> 
<input type="reset" name="Submit2" value="重置" class="button" /></td> 
</tr> 
</table> 
</div> 
</div> 
</form> 
</body> 
</html> 

点提交后执行singup.php里的processForm函数

3、inc/singup.php
 
<?php 
define ('XAJAX_DEFAULT_CHAR_ENCODING', 'gb2312' ); 
//注意这里,必须要设置gb2312,不然中文会乱码 
require_once("xajax.inc.php"); 
require_once("function.php"); 
$xajax = new xajax(); 
$xajax->registerFunction("processForm"); 
//同reg.php文件 

function processForm($aFormValues) 
{ 
$objResponse = new xajaxResponse(); 
require_once("conn.php"); 
$usr=$aFormValues['usr']; 
$email=$aFormValues['email']; 
$pwd=$aFormValues['pwd']; 
$pw=Md5($pwd); 
$errmsg=""; 
//要过滤的非法字符 
$ArrFiltrate=array("'",";","union"); 

foreach($aFormValues as $key=>$value){ 
if (FunStringExist($value,$ArrFiltrate)){ 
$objResponse->addAlert("输入的信息含有非法字符\"' ; union!\""); 
$objResponse->addAssign("submitButton","value","继续"); 
$objResponse->addAssign("submitButton","disabled",false); 
return $objResponse; 
} 
} 

if (trim($usr) == "") 
{ 
$errmsg.="请输入用户名!\n"; 
} 
if (trim($pwd) == "") 
{ 
$errmsg.="请输入密码!\n"; 
} 
if ($pwd != $aFormValues['pwd2']) 
{ 
$errmsg.="两次输入的密码不一致!\n"; 
} 

if (!CheckEmailAddr($email)) 
{ 
$errmsg.="邮件地址不正确!\n"; 
} 
$sql="select * from zl_usr where zl_usr='$usr'"; 
$result=mysql_query($sql,$db); 
if($myrow=mysql_fetch_array($result)){ 
$errmsg.="用户名已经存在!\n"; 
} 
if ($errmsg=="") 
{ 
$sForm = "注册成功<br>用户名:".$usr."<br>email:".$email.""; 
$sql="insert into zl_usr(zl_usr,zl_pwd,email) values('$usr','$pw','$email')"; 
$result=mysql_query($sql,$db); 
$objResponse->addAssign("formDiv","innerHTML",$sForm); 
} 
else 
{ 
$objResponse->addAlert($errmsg); 
//弹出错误信息 
$objResponse->addAssign("submitButton","value","继续"); 
//修改submitButton的value为继续 
$objResponse->addAssign("submitButton","disabled",false); 
//修改submitButton这个按扭的属性 
} 

return $objResponse; 
} 


$xajax->processRequests(); 
?> 

这个文件中对信息进行了有效性判断,包括:用户名是否已经注册过、信息中是否有非法字符、邮件地址是否正确、两次输入的密码是否一致,如果没有错误则输入到数据库中,并
$objResponse->addAssign("formDiv","innerHTML",$sForm);
在formDiv中重新插入代码,内容为$sForm
$sForm = "注册成功<br>用户名:".$usr."<br>email:".$email."";

如果有错误信息则
$objResponse->addAlert($errmsg);
//弹出错误信息
$objResponse->addAssign("submitButton","value","继续");
$objResponse->addAssign("submitButton","disabled",false);
//修改submitButton这个按扭的属性

3、login.php 登陆文件
 
<?php 
require_once("inc/xajax.inc.php"); 
$xajax = new xajax("inc/login.php"); 
$xajax->registerFunction("processForm"); 
?> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<link rel="stylesheet" href="http://blogbeta.blueidea.com/css/style.css" _fcksavedurl=""http://blogbeta.blueidea.com/css/style.css"" type="text/css"> 
<title>无标题文档</title> 
<?php $xajax->printJavascrīpt('inc/'); ?> 
<scrīpt type="text/javascrīpt"> 
function submitSignup() 
{ 
xajax.$('submitButton').disabled=true; 
xajax.$('submitButton').value="http://blogbeta.blueidea.com/wait..."; 
xajax_processForm(xajax.getFormValues("signupForm")); 
return false; 
} 
</scrīpt> 
</head> 
<body><form id="signupForm" action="javascrīpt:void(null);" ōnSubmit="submitSignup();"> 
<div id="main"> 
<div id="m1">用 户 登 陆</div> 
<div id="formDiv"> 
<table width="100%" border="0" cellspacing="0" cellpadding="5"> 
<tr> 
<td align="right"> </td> 
<td> </td> 
</tr> 
<tr> 
<td width="31%" align="right">用户名:</td> 
<td width="69%"><input name="usr" type="text" id="usr" /> 
*</td> 
</tr> 
<tr> 
<td align="right">密码:</td> 
<td><input name="pwd" type="password" id="pwd" /> 
*</td> 
</tr> 

<tr align="center"> 
<td colspan="2"><input type="submit" name="submitButton" value="提交" class="button" /> 
<input type="reset" name="Submit2" value="重置" class="button" /></td> 
</tr> 
</table> 
</div> 
</div> 
</form> 
</body> 
</html> 

4、inc/login.php 登陆用的处理文件
 
<?php 
define ('XAJAX_DEFAULT_CHAR_ENCODING', 'gb2312' ); 
require_once("xajax.inc.php"); 
require_once("function.php"); 
$xajax = new xajax(); 
$xajax->registerFunction("processForm"); 

function processForm($aFormValues) 
{ 
$objResponse = new xajaxResponse(); 
require_once("conn.php"); 
$usr=$aFormValues['usr']; 
$email=$aFormValues['email']; 
$pwd=$aFormValues['pwd']; 
$pw=Md5($pwd); 
$errmsg=""; 
//要过滤的非法字符 
$ArrFiltrate=array("'",";","union"); 

foreach($aFormValues as $key=>$value){ 
if (FunStringExist($value,$ArrFiltrate)){ 
$objResponse->addAlert("输入的信息含有非法字符\"' ; union!\""); 
$objResponse->addAssign("submitButton","value","继续"); 
$objResponse->addAssign("submitButton","disabled",false); 
return $objResponse; 
} 
} 

if (trim($usr) == "") 
{ 
$errmsg.="请输入用户名!\n"; 
} 
if (trim($pwd) == "") 
{ 
$errmsg.="请输入密码!\n"; 
} 
$sql="select * from zl_usr where zl_usr='$usr' and zl_pwd='$pw'"; 
$result=mysql_query($sql,$db); 
if(!$myrow=mysql_fetch_array($result)){ 
$errmsg.="用户名不存在,或密码错误!\n"; 
} 
if ($errmsg=="") 
{ 
$sForm = "登陆成功"; 
$objResponse->addAssign("formDiv","innerHTML",$sForm); 
} 
else 
{ 
$objResponse->addAlert($errmsg); 
$objResponse->addAssign("submitButton","value","继续"); 
$objResponse->addAssign("submitButton","disabled",false); 
} 

return $objResponse; 
} 


$xajax->processRequests(); 
?> 

登陆于注册原理差不多,就不废话了:)

另外下面是两个用到的文件代码 conn.php function.php
conn.php
 
<?php 
$database="zl";//MYSQL数据库名 
$db = mysql_connect("127.0.0.1", "root","123456");//MYSQL数据库用户名和密码 
mysql_select_db($database,$db); 
?> 
function.php 

<?php 
function CheckEmailAddr($C_mailaddr) 
{ 
if (!eregi("^[_a-z0-9-] (.[_a-z0-9-] )*@[a-z0-9-] (.[a-z0-9-] )*$", 
$C_mailaddr)) 
{ 
return false; 
} 
return true; 
} 
//是否存在数组中的值 
function FunStringExist($StrFiltrate,$ArrFiltrate){ 
foreach ($ArrFiltrate as $key=>$value){ 
if (eregi($value,$StrFiltrate)){ 
return true; 
} 
} 
return false; 
} 
?> 

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