php main 与 iframe 相互通讯类(同域/跨域)
最后更新于：2022-04-01 14:12:43
**main 与 iframe 相互通讯类**
之前写过一篇[《iframe与主框架跨域相互访问方法》](http://blog.csdn.net/fdipzone/article/details/17619673)，介绍了main与iframe相互通讯的原理，不了解原理的可以先看看。
今天把main与iframe相互通讯的方法封装成类，主要有两个文件，
JS：FrameMessage.js 实现调用方法的接口，如跨域则创建临时iframe，调用同域执行者。
PHP：FrameMessage.class.php 实现接收到跨域请求时，根据参数返回执行方法的JS code。
**功能如下：**
1.支持同域与跨域通讯
2.传递的方法参数支持字符串，JSON，数组等。
~~~
FrameMessage.exec('http://127.0.0.1/execB.php', 'myframe', 'fIframe', ['fdipzone', '{"gender":"male","age":"29"}', '["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]']);
~~~
~~~
FrameMessage.exec('http://localhost/execA.php', '', 'fMain', ['programmer', '{"first":"PHP","second":"javascript"}', '["EEG","NMG"]']);
~~~
因部分浏览器不支持JSON.stringify 与JSON.parse 方法（如IE6/7），为了兼容，需要包含json2.js，下载地址：[https://github.com/douglascrockford/JSON-js](https://github.com/douglascrockford/JSON-js)
**FrameMessage.js**
~~~
/**Main 与 Iframe 相互通讯类 支持同域与跨域通讯
* Date: 2013-12-29
*Author: fdipzone
*Ver: 1.0
*/
var FrameMessage = (function(){
this.oFrameMessageExec = null; // 临时iframe
/* 执行方法
executor 执行的页面,为空则为同域
frame 要调用的方法的框架名称,为空则为parent
func 要调用的方法名
args 要调用的方法的参数,必须为数组[arg1, arg2, arg3, argn...],方便apply调用
元素为字符串格式,请不要使用html,考虑注入安全的问题会过滤
*/
this.exec = function(executor, frame, func, args){
this.executor = typeof(executor)!='undefined'? executor : '';
this.frame = typeof(frame)!='undefined'? frame : '';
this.func = typeof(func)!='undefined'? func : '';
this.args = typeof(args)!='undefined'? (__fIsArray(args)? args : []) : []; // 必须是数组
if(executor==''){
__fSameDomainExec(); // same domain
}else{
__fCrossDomainExec(); // cross domain
}
}
/* 同域执行 */
function __fSameDomainExec(){
if(this.frame==''){ // parent
parent.window[this.func].apply(this, this.args);
}else{
window.frames[this.frame][this.func].apply(this, this.args);
}
}
/* 跨域执行 */
function __fCrossDomainExec(){
if(this.oFrameMessageExec == null){
this.oFrameMessageExec = document.createElement('iframe');
this.oFrameMessageExec.name = 'FrameMessage_tmp_frame';
this.oFrameMessageExec.src = __fGetSrc();
this.oFrameMessageExec.style.display = 'none';
document.body.appendChild(this.oFrameMessageExec);
}else{
this.oFrameMessageExec.src = __fGetSrc();
}
}
/* 获取执行的url */
function __fGetSrc(){
return this.executor + (this.executor.indexOf('?')==-1? '?' : '&') + 'frame=' + this.frame + '&func=' + this.func + '&args=' + JSON.stringify(this.args) + '&framemessage_rand=' + Math.random();
}
/* 判断是否数组 */
function __fIsArray(obj){
return Object.prototype.toString.call(obj) === '[object Array]';
}
return this;
}());
~~~
**FrameMessage.class.php**
~~~
<?php
/**Frame Message class main 与 iframe 相互通讯类
*Date: 2013-12-29
*Author: fdipzone
*Ver: 1.0
*
*Func:
*public execute 根据参数调用方法
*private returnJs 创建返回的javascript
*private jsFormat 转义参数
*/
class FrameMessage{ // class start
/* execute 根据参数调用方法
* @param String $frame 要调用的方法的框架名称,为空则为parent
* @param String $func 要调用的方法名
* @param JSONstr $args 要调用的方法的参数
* @return String
*/
public static function execute($frame, $func, $args=''){
if(!is_string($frame) || !is_string($func) || !is_string($args)){
return '';
}
// frame 与 func 限制只能是字母数字下划线
if(($frame!='' && !preg_match('/^[A-Za-z0-9_]+$/',$frame)) || !preg_match('/^[A-Za-z0-9_]+$/',$func)){
return '';
}
$params_str = '';
if($args){
$params = json_decode($args, true);
if(is_array($params)){
for($i=0,$len=count($params); $i<$len; $i++){ // 过滤参数,防止注入
$params[$i] = self::jsFormat($params[$i]);
}
$params_str = "'".implode("','", $params)."'";
}
}
if($frame==''){ // parent
return self::returnJs("parent.parent.".$func."(".$params_str.");");
}else{
return self::returnJs("parent.window.".$frame.".".$func."(".$params_str.");");
}
}
/**创建返回的javascript
* @param String $str
* @return String
*/
private static function returnJs($str){
$ret = '<script type="text/javascript">'."\r\n";
$ret .= $str."\r\n";
$ret .= '</script>';
return $ret;
}
/**转义参数
* @param String $str
* @return String
*/
private static function jsFormat($str){
$str = strip_tags(trim($str)); // 过滤html
$str = str_replace('\\s\\s', '\\s', $str);
$str = str_replace(chr(10), '', $str);
$str = str_replace(chr(13), '', $str);
$str = str_replace(' ', '', $str);
$str = str_replace('\\', '\\\\', $str);
$str = str_replace('"', '\\"', $str);
$str = str_replace('\\\'', '\\\\\'', $str);
$str = str_replace("'", "\'", $str);
return $str;
}
} // class end
?>
~~~
**A.html**
~~~
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title> main window </title>
<script type="text/javascript" src="json2.js"></script>
<script type="text/javascript" src="FrameMessage.js"></script>
<script type="text/javascript">
// main js function
function fMain(profession, skill, company){
var skill_p = JSON.parse(skill);
var company_p = JSON.parse(company);
var msg = "main function execute success\n\n";
msg += "profession:" + profession + "\n";
msg += "first skill:" + skill_p.first + "\n";
msg += "second skill:" + skill_p.second + "\n";
msg += "company1:" + company_p[0] + "\n";
msg += "company2:" + company_p[1] + "\n";
alert(msg);
}
// exec iframe function
function exec_iframe(){
// same domain
//FrameMessage.exec('', 'myframe', 'fIframe', ['fdipzone', '{"gender":"male","age":"29"}', '["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]']);
// cross domain
FrameMessage.exec('http://127.0.0.1/execB.php', 'myframe', 'fIframe', ['fdipzone', '{"gender":"male","age":"29"}', '["http://blog.csdn.net/fdipzone", "http://weibo.com/fdipzone"]']);
}
</script>
</head>
<body>
<p>A.html main</p>
<p><input type="button" value="exec iframe function" onclick="exec_iframe()"></p>
<!-- same domain -->
<!--<iframe src="B.html" name="myframe" width="500" height="100"></iframe>-->
<!-- cross domain -->
<iframe src="http://127.0.0.1/B.html" name="myframe" width="500" height="100"></iframe>
</body>
</html>
~~~
**B.html**
~~~
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title> iframe window </title>
<script type="text/javascript" src="json2.js"></script>
<script type="text/javascript" src="FrameMessage.js"></script>
<script type="text/javascript">
// iframe js function
function fIframe(name, obj, arr){
var obj_p = JSON.parse(obj);
var arr_p = JSON.parse(arr);
var msg = "iframe function execute success\n\n";
msg += "name:" + name + "\n";
msg += "gender:" + obj_p.gender + "\n";
msg += "age:" + obj_p.age + "\n";
msg += "blog:" + arr_p[0] + "\n";
msg += "weibo:" + arr_p[1] + "\n";
alert(msg);
}
// exec main function
function exec_main(){
// same domain
//FrameMessage.exec('', '', 'fMain', ['programmer', '{"first":"PHP","second":"javascript"}', '["EEG","NMG"]']);
// cross domain
FrameMessage.exec('http://localhost/execA.php', '', 'fMain', ['programmer', '{"first":"PHP","second":"javascript"}', '["EEG","NMG"]']);
}
</script>
</head>
<body>
<p>B.html iframe</p>
<p><input type="button" value="exec main function" onclick="exec_main()"></p>
</body>
</html>
~~~
**execA.php 与 execB.php**
~~~
<?php
require 'FrameMessage.class.php';
$frame = isset($_GET['frame'])? $_GET['frame'] : '';
$func = isset($_GET['func'])? $_GET['func'] : '';
$args = isset($_GET['args'])? $_GET['args'] : '';
$result = FrameMessage::execute($frame, $func, $args);
echo $result;
?>
~~~
**源码下载地址：[点击查看](http://download.csdn.net/detail/fdipzone/6787109)**