From 6974abdb95faf27c26d43d00a4ba50737150fa73 Mon Sep 17 00:00:00 2001
From: Athou <jeremiepanzer@gmail.com>
Date: Thu, 22 Aug 2013 12:04:00 +0200
Subject: [PATCH] don't compare strings with ==

---
 src/main/java/edu/uci/ics/crawler4j/url/URLCanonicalizer.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/edu/uci/ics/crawler4j/url/URLCanonicalizer.java b/src/main/java/edu/uci/ics/crawler4j/url/URLCanonicalizer.java
index 3f5196a8..d78502d6 100644
--- a/src/main/java/edu/uci/ics/crawler4j/url/URLCanonicalizer.java
+++ b/src/main/java/edu/uci/ics/crawler4j/url/URLCanonicalizer.java
@@ -28,6 +28,8 @@ import java.util.Map;
 import java.util.SortedMap;
 import java.util.TreeMap;
 
+import org.apache.commons.lang.StringUtils;
+
 /**
  * See http://en.wikipedia.org/wiki/URL_normalization for a reference Note: some
  * parts of the code are adapted from: http://stackoverflow.com/a/4057470/405418
@@ -46,7 +48,7 @@ public class URLCanonicalizer {
 			URL canonicalURL = new URL(UrlResolver.resolveUrl(context == null ? "" : context, href));
 			
 			String host = canonicalURL.getHost().toLowerCase();
-			if (host == "") {
+			if (StringUtils.isBlank(host)) {
 				// This is an invalid Url.
 				return null;
 			}