匹配URL,如Nginx中:rewrite ^/([^/.]*)(/[^\?]*)?((\?.*)?)$ /$1/index.php$2$3 break;
匹配安全的url:/^https?:\/\/[^\s&<>#;"\'\?]+(|#[^\s<>"\']*|\?[^\s<>"\']*)$/i
样例一(含有一个必须有的key=>value):
/^[a-zA-Z]+:\/\/[^\s&<>#;"\'\?]+\?((\w+=[^\s<>"\']+&)*(key1=\{value1\})(&\w+=[^\s<>"\']+)*)$/
样例二(含有两个必须有的key=>value):
/^[a-zA-Z]+:\/\/[^\s&<>#;"\'\?]+\?(((\w+=[^\s<>"\']+&)*(key1=\{value1\})(&\w+=[^\s<>"\']+)*(&key2=\{value2\})(&\w+=[^\s<>"\']+)*)|((\w+=[^\s<>"\']+&)*(key2=\{value2\})(&\w+=[^\s<>"\']+)*(&key1=\{value1\})(&\w+=[^\s<>"\']+)*))$/