解析URL（ActionScript 3.0）

Question

我想知道如何解析URL。

协议：//mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes

我需要得到 “this_is_what_i_want/even_if_it_has_slashes”

我应该怎么办呢？

谢谢！

Answer 1

试试这个：

var u:String = 'protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes', 
    a:Array = u.split('/'), 
    s:String = '' 

for(var i=0; i<a.length; i++){ 
    if(i > 3){ 
     s += '/'+a[i] 
    } 
} 

trace(s) // gives : /morethings/this_is_what_i_want/even_if_it_has_slashes 

Answer 2

另一种方法是使用正则表达式是这样的：

.*?mydomain\.com[^\/]*\/[^\/]+\/[^\/]+\/([^?]*) 

（Breakdown of the components.）

这看起来对于它跳过模式域之前，无论发生什么事名称（如果协议被指定，则无关紧要），跳过域名+ TLD，跳过任何端口号，并跳过前两个子路径元素。然后选择后面的任何内容，但跳过任何查询字符串。

例子：http://regexr.com/39r69

在代码中，你可以使用它像这样：

var url:String = "protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes"; 
var urlExp:RegExp = /.*?mydomain\.com[^\/]*\/[^\/]+\/[^\/]+\/([^?]*)/g; 
var urlPart:Array = urlExp.exec(url); 
if (urlPart.length > 1) { 
    trace(urlPart[1]); 
    // Prints "this_is_what_i_want/even_if_it_has_slashes" 
} else { 
    // No matching part of the url found 
} 

正如你可以在上面的regexr链接上看到，这抓住了部分 “this_is_what_i_want/even_if_it_has_slashes”为所有这些变化的url：

protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes 
protocol://mydomain.com:8080/something/morethings/this_is_what_i_want/even_if_it_has_slashes 
protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes.html 
protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes.html?hello=world 
mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes 
protocol://subdomain.mydomain.com:8080/something/morethings/this_is_what_i_want/even_if_it_has_slashes 

编辑：固定在正则表达式字符串

Answer 3

简单的办法，

var file:String = 'protocol://mydomain.com/something/morethings/this_is_what_i_want/even_if_it_has_slashes'; 
    var splitted:Array = file.split('/'); 
    var str1:String = splitted.splice(3).join('/'); //returns 'something/morethings/this_is_what_i_want/even_if_it_has_slashes' 
    var str1:String = splitted.splice(5).join('/'); //returns 'this_is_what_i_want/even_if_it_has_slashes'