Mark A. Ziesemer: A faster, "complete" Java HttpServletRequest.getRequestUrl() replacement

Sunday, August 6, 2017

A faster, "complete" Java HttpServletRequest.getRequestUrl() replacement

As another performance-focused method for reuse: It should be easier to obtain the "complete" URL from a HttpServletRequest in Java. This is even a popular question on Stack Overflow: HttpServletRequest to complete URL - though I have various issues with each of the current answers.

Following is a self-written version that I've been using for a number of years now. I previously had posted it as a Gist, and since incorporated it into my MarkUtils-Web library in WebUtils - Checkstyle-approved and JUnit-tested:

import javax.servlet.http.HttpServletRequest; public class GetRequestUrl{ /** *

A faster replacement for {@link HttpServletRequest#getRequestURL()} * (returns a {@link String} instead of a {@link StringBuffer} - and internally uses a {@link StringBuilder}) * that also includes the {@linkplain HttpServletRequest#getQueryString() query string}.

https://gist.github.com/ziesemer/700376d8da8c60585438

* @author Mark A. Ziesemer * <www.ziesemer.com> */ public String getRequestUrl(final HttpServletRequest req){ final String scheme = req.getScheme(); final int port = req.getServerPort(); final StringBuilder url = new StringBuilder(256); url.append(scheme); url.append("://"); url.append(req.getServerName()); if(!(("http".equals(scheme) && (port == 0 || port == 80)) || ("https".equals(scheme) && port == 443))){ url.append(':'); url.append(port); } url.append(req.getRequestURI()); final String qs = req.getQueryString(); if(qs != null){ url.append('?'); url.append(qs); } final String result = url.toString(); return result; } }

Mark A. Ziesemer

Sunday, August 6, 2017

A faster, "complete" Java HttpServletRequest.getRequestUrl() replacement

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Mark A. Ziesemer

Sunday, August 6, 2017

A faster, "complete" Java HttpServletRequest.getRequestUrl() replacement

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