--- On Tue, 8/5/08, David Wall <[EMAIL PROTECTED]> wrote:
> From: David Wall <[EMAIL PROTECTED]>
> Subject: Re: Parsing a URL to see if a param exists
> To: "Tomcat Users List" <[email protected]>
> Date: Tuesday, August 5, 2008, 7:50 PM
> >
> http://java.sun.com/docs/books/tutorial/networking/urls/urlInfo.html
> >
> > It breaks down every component of the url (protocol,
> domain name, etc). Is that what you're looking for?
> >
>
> Not really since I just need to process the query string
> portion to see
> if a given param exists or not. I'm using a simple
> homegrown parser now:
>
> public boolean isParamInUrl(String url, String
> paramName)
> {
> int pos = url.indexOf("?");
> if ( pos > 0 )
> url = url.substring(pos);
> String[] paramValues =
> url.split("&");
> if ( paramValues == null )
> return false;
>
> for( String paramValue : paramValues )
> {
> String[] paramAndValue =
> paramValue.split("=");
> if ( paramAndValue == null ||
> paramAndValue.length != 2 )
> return false;
> if ( paramAndValue[0].equals(paramName) )
> return true;
> }
> return false;
> }
>
> The concern is whether this is valid should the URL have
> complex params
> and such based on encoding schemes. I mean, it just splits
> the url
> query string into an array of param-values '&',
> and then splits that by
> '=' without concern for any encoding.
>
> David
>
>
Hi,
Wouldn't be faster/less coding if you just use this?
URL aURL = new URL(url);
String urlParams = aURL.getQuery();
if (urlParams.contains(paramName)) {
// proccess as needed if paramName exists
} else {
// process as otherwise
}
just a thought :)
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