页面try catch里使用c的 c1,c1里使用b的b1,b1里使用a的a1。
默认的是:a1里抛出异常,b1里捕获a1的异常,然后再把刚才的异常抛出,c1捕获,然后抛出,最后页面捕获并输出。
结果是:
X-Powered-By: PHP/5.1.1
Content-type: text/html
#0 D:\workspace\myzCollection\test.php(16): a->a1()
#1 D:\workspace\myzCollection\test.php(28): b->b1()
#2 D:\workspace\myzCollection\test.php(37): c->c1()
#3 C:\Program Files\Zend\ZendStudio-5.2.0\bin\php5\dummy.php(1): include('D:\workspace\my...')
#4 {main}end
第二个测试:
把b1里面的throw $e去掉,就是不抛出。
结果是:
X-Powered-By: PHP/5.1.1
Content-type: text/html
end
第三个测试:
把b1里面的throw new Exception($e->getMessage());打开。
抛出一个新的异常,这样b1以上的调用都拿不到a1的异常了。
结果是:
X-Powered-By: PHP/5.1.1
Content-type: text/html
#0 D:\workspace\myzCollection\test.php(28): b->b1()
#1 D:\workspace\myzCollection\test.php(37): c->c1()
#2 C:\Program Files\Zend\ZendStudio-5.2.0\bin\php5\dummy.php(1): include('D:\workspace\my...')
#3 {main}end
第四个测试:
把b1里面的try catch throw都去掉。
结果:一切正常,就是说中间的步骤不需要抛出,最上层也能拿到最下层抛出的异常。
只是有一个问题,b中如果出先异常,就没有办法取到,如果需要也检测b的话,那么也要在b中加上try catch
X-Powered-By: PHP/5.1.1
Content-type: text/html
#0 D:\workspace\myzCollection\test.php(16): a->a1()
#1 D:\workspace\myzCollection\test.php(28): b->b1()
#2 D:\workspace\myzCollection\test.php(37): c->c1()
#3 C:\Program Files\Zend\ZendStudio-5.2.0\bin\php5\dummy.php(1): include('D:\workspace\my...')
#4 {main}end
<?php
class a {
public function a1 () {
try {
throw new Exception('123');
} catch (Exception $e) {
throw $e;
}
}
}
class b {
public function b1 () {
try {
$a = new a();
$a->a1();
} catch (Exception $e) {
throw $e;
//throw new Exception($e->getMessage());
}
}
}
class c {
public function c1 () {
try {
$a = new b();
$a->b1();
} catch (Exception $e) {
throw $e;
}
}
}
try {
$c = new c();
$c->c1();
} catch (Exception $e) {
echo $e->getTraceAsString();
}
echo 789;
?>
/**
* @name 采集书.php
* @date Sun Mar 01 22:48:02 CST 2009
* @copyright 马永占(MyZ)
* @author 马永占(MyZ)
* @link http://blog.csdn.net/mayongzhan/
*/
//header('Content-Type:text/html;charset=utf8');
header('Content-Type:text/html;charset=gb2312');
error_reporting(E_ALL);
date_default_timezone_set('Asia/Shanghai');
set_time_limit(0);
function writer($content,$url)
{
$fp = fopen($url, 'ab');
fwrite($fp, $content);
fclose($fp);
}
$folder = '2'; //文件夹
$book_base_url = 'xxxxxxxxxxxxxxxxxxxxx';
$book_url = 'yyyyyyyyyyyyy.html';
$main = file_get_contents($book_base_url.$book_url);
preg_match_all('/chapter_.*?\.html/', $main, $pages);
$pages = array_unique($pages[0]);
foreach ($pages as $value) {
writer(file_get_contents($book_base_url.$value), './'.$folder.'/'.$value.'.txt');
$str = file_get_contents('./'.$folder.'/'.$value.'.txt');
//print_r($str);
preg_match("/(<h1>)(.*?)(<\/h1>)(.*?)(<div id=\"contTxt\" contTxt1\">)(.*?)(<\/div>)/s",$str,$arr);
//print_r($arr);die();
$arr[6] = preg_replace("/(<span[^>]+>.*?<a[^>]+>)(.*?)(<\/a><\/span>)/s","$2",preg_replace("/<p>|<\/p>/","\r\n",$arr[6]));
$result = "\r\n------------------------------------------------\r\n------------------------------------------------\r\n------------------------------------------------\r\n----------------".$arr[2]."\r\n------------------------------------------------\r\n------------------------------------------------\r\n------------------------------------------------\r\n".$arr[6];
writer($result, './'.$folder.'/new.txt');
}
?>
解决的办法是在服务器端返回的数据流中加上一个header,指明送出的数据流是什么编码,这样XMLHttp就不搞乱了。
header('Content-Type:text/html; charset=GB2312');