更好的轮询的机制，解决应用目录下的files加载问题.

Author: zhangchile

.htaccess

@@ -16,4 +16,4 @@ RewriteEngine On
 #RewriteRule ^(.*)$ - [E=BASE:%1]
 #RewriteRule ^(.*)$ %{ENV:BASE}index.php [NC,L]
 
-RewriteRule (/?[^\/]*\/css\/)(.*\.(jpg|jpeg|png|gif|tif|js|css))$ WebApp$1$2
+RewriteRule (index.php)(.*.(jpg|jpeg|png|gif|tif|js|css))$ WebApp/$2

core/Ajax.php

@@ -28,7 +28,8 @@ function sendRequest() {
         createRequest();
         var url = <?php $request_url = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']; 
                     echo '"'.substr($request_url, 0, stripos($request_url,'index.php')).'reload.php"';?>;
-        request.open('GET',url + '?time=' + getT(),true);
+        var app = "<?php global $app; echo $app;?>";
+        request.open('GET',url + '?time=' + getT() + '&app=' + app,true);
         request.onreadystatechange = processRequest;
         request.send(null);
         setTimeout(abortRequest, timeOut);//超时重试
@@ -38,6 +39,7 @@ function processRequest() {
         if(request.readyState == 4 && request.status == 200) {
             //请求结果已经返回
             var msg = request.responseText;
+            console.log(msg);
             (typeof msg !== 'object') ? jsonObj = JSON.parse(msg) : jsonObj = msg;
             if (1 === jsonObj.status){
                 console.log("文件已经改动，可以刷新页面！");

core/bootstrap.php

@@ -4,17 +4,26 @@
 require_once (ROOT . DS . 'core' . DS .'check.php');
 
 
+
 function callHook()
 {
-	global $url;
+	global $url;//全局url
+	global $app;
+	global $page;
+
+	$uri = $_SERVER['REQUEST_URI'];
+	$start = stripos($uri, 'index.php');
+	if($start > 0)
+		$url = substr($uri, $start + 10);
+
 	$urlArray = array();
 	$urlArray = explode("/", $url);
 	// echo '<br/>';
 	// var_dump($urlArray);
 	if($urlArray[0] != '') {
 		$app = $urlArray[0];
 	 } else {
-		$app = "default";//默认为default
+		// $app = "default";//默认为default
 	 }
 	array_shift($urlArray);//将数组开头的单元移出数组
 	if(count($urlArray) != 0) {

core/check.php

@@ -48,6 +48,12 @@ function log_file($dir, $app)
 function is_change($app)
 {
     $dir = ROOT.DS.'WebApp'.DS.$app;
+
+    if(!file_exists('data/'.$app.'.json')) {//文件不存在
+        log_file($dir, $app);//创建一个新的记录
+        return true;
+    }
+
     $files = get_filenamesbydir($dir);
     $info = array();
     foreach ($files as $value) {

index.php

@@ -6,12 +6,9 @@
 define('ROOT', dirname(__FILE__));
 
 // echo substr($_SERVER['REQUEST_URI'], 0, stripos($_SERVER['REQUEST_URI'],'index.php')),$_SERVER['REQUEST_URI'];
-$uri = $_SERVER['REQUEST_URI'];
-$start = stripos($uri, 'index.php');
-if($start > 0)
-	$url = substr($uri, $start + 10);
-else
-	$url = '';
+$url = '';//全局变量
+$app = '';
+$page = '';
 
 require_once(ROOT . DS. 'core' . DS . 'bootstrap.php');
 rander();//加载页面

reload.php

@@ -1,23 +1,27 @@
 <?php
 define('DS', DIRECTORY_SEPARATOR);
 define('ROOT', dirname(__FILE__));
-require_once (ROOT . DS . 'core' . DS .'bootstrap.php');
-$callHook = callHook();
+require_once (ROOT . DS . 'core' . DS .'check.php');
+
+if($_GET['time'] && $_GET['app']) {
+    $sendTime = $_GET['time'];
+    $app = $_GET['app'];
+} else {
+    return json_encode(array('status'=>0,'intime'=>time()-$sendTime));
+} 
+
 set_time_limit(0);//设定执行时间，0为无限
 $startTime = time();//当前时间戳
 $flag = false;
 while(time() - $startTime < 60) {//60秒内检查文件是否改动
-    if(is_change($callHook['app'])) {
+    if(is_change($app)) {
         $flag = true;
         break;
     }
     sleep(1);//间隔1秒检查
 }
-// sleep(rand(1,10));
 if($flag){
-    $sendTime = $_GET['time'];
     echo json_encode(array('status'=>1,'intime'=>time()-$sendTime));  
 } else {
-    $sendTime = $_GET['time'];
     echo json_encode(array('status'=>0,'intime'=>time()-$sendTime));  
 }