Parse script elements as links

src/main/java/edu/uci/ics/crawler4j/crawler/WebCrawler.java

@@ -106,8 +106,11 @@ public class WebCrawler implements Runnable {
      *            the id of this crawler instance
      * @param crawlController
      *            the controller that manages this crawling session
+     * @throws IllegalAccessException
+     * @throws InstantiationException
      */
-    public void init(int id, CrawlController crawlController) {
+    public void init(int id, CrawlController crawlController)
+        throws InstantiationException, IllegalAccessException {
         this.myId = id;
         this.pageFetcher = crawlController.getPageFetcher();
         this.robotstxtServer = crawlController.getRobotstxtServer();

src/main/java/edu/uci/ics/crawler4j/parser/AllTagMapper.java

@@ -0,0 +1,43 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.crawler4j.parser;
+
+import org.apache.tika.parser.html.HtmlMapper;
+
+/**
+ * Maps all HTML tags (not ignore some of this)
+ *
+ * @author Andrey Nikolaev (vajadhava@gmail.com)
+ */
+public class AllTagMapper implements HtmlMapper {
+
+    @Override
+    public String mapSafeElement(String name) {
+        return name.toLowerCase();
+    }
+
+    @Override
+    public boolean isDiscardElement(String name) {
+        return false;
+    }
+
+    @Override
+    public String mapSafeAttribute(String elementName, String attributeName) {
+        return attributeName.toLowerCase();
+    }
+}

src/main/java/edu/uci/ics/crawler4j/parser/HtmlContentHandler.java

@@ -40,7 +40,8 @@ private enum Element {
         IMG,
         BASE,
         META,
-        BODY
+        BODY,
+        SCRIPT
     }
 
     private static class HtmlFactory {
@@ -97,7 +98,7 @@ public void startElement(String uri, String localName, String qName, Attributes
 
             }
         } else if ((element == Element.IFRAME) || (element == Element.FRAME) ||
-                   (element == Element.EMBED)) {
+                   (element == Element.EMBED) || (element == Element.SCRIPT)) {
             String src = attributes.getValue("src");
             if (src != null) {
                 addToOutgoingUrls(src, localName);

src/main/java/edu/uci/ics/crawler4j/parser/Parser.java

@@ -27,7 +27,9 @@
 import org.apache.tika.metadata.DublinCore;
 import org.apache.tika.metadata.Metadata;
 import org.apache.tika.parser.ParseContext;
+import org.apache.tika.parser.html.HtmlMapper;
 import org.apache.tika.parser.html.HtmlParser;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -50,10 +52,11 @@ public class Parser extends Configurable {
     private final HtmlParser htmlParser;
     private final ParseContext parseContext;
 
-    public Parser(CrawlConfig config) {
+    public Parser(CrawlConfig config) throws InstantiationException, IllegalAccessException {
         super(config);
         htmlParser = new HtmlParser();
         parseContext = new ParseContext();
+        parseContext.set(HtmlMapper.class, AllTagMapper.class.newInstance());
     }
 
     public void parse(Page page, String contextURL)
@@ -159,4 +162,4 @@ public void parse(Page page, String contextURL)
             }
         }
     }
-}
+}

src/test/java/edu/uci/ics/crawler4j/examples/localdata/Downloader.java

@@ -40,13 +40,13 @@ public class Downloader {
     private final Parser parser;
     private final PageFetcher pageFetcher;
 
-    public Downloader() {
+    public Downloader() throws InstantiationException, IllegalAccessException {
         CrawlConfig config = new CrawlConfig();
         parser = new Parser(config);
         pageFetcher = new PageFetcher(config);
     }
 
-    public static void main(String[] args) {
+    public static void main(String[] args) throws InstantiationException, IllegalAccessException {
         Downloader downloader = new Downloader();
         downloader.processUrl("http://en.wikipedia.org/wiki/Main_Page/");
         downloader.processUrl("http://www.yahoo.com/");

src/test/java/edu/uci/ics/crawler4j/tests/HtmlContentHandlerTest.java

@@ -6,9 +6,12 @@
 
 import org.apache.tika.metadata.Metadata;
 import org.apache.tika.parser.ParseContext;
+import org.apache.tika.parser.html.HtmlMapper;
 import org.apache.tika.parser.html.HtmlParser;
 import org.junit.Test;
 
+import edu.uci.ics.crawler4j.parser.AllTagMapper;
+import edu.uci.ics.crawler4j.parser.ExtractedUrlAnchorPair;
 import edu.uci.ics.crawler4j.parser.HtmlContentHandler;
 
 public class HtmlContentHandlerTest {
@@ -20,6 +23,7 @@ private HtmlContentHandler parseHtml(String html) throws Exception {
         ByteArrayInputStream bais = new ByteArrayInputStream(html.getBytes());
         Metadata metadata = new Metadata();
         HtmlContentHandler contentHandler = new HtmlContentHandler();
+        parseContext.set(HtmlMapper.class, AllTagMapper.class.newInstance());
         parser.parse(bais, contentHandler, metadata, parseContext);
         return contentHandler;
     }
@@ -50,4 +54,15 @@ public void testTableInBody() throws Exception {
         assertEquals("Hello there mr bear", parse.getBodyText());
     }
 
+    @Test
+    public void testSciptInHead() throws Exception {
+
+        HtmlContentHandler parse = parseHtml("<html><head>" +
+            "<script src=\"/js/app.js\"></script>" +
+            "</head></html>");
+
+        ExtractedUrlAnchorPair script = parse.getOutgoingUrls().get(0);
+        assertEquals("/js/app.js", script.getHref());
+    }
+
 }