Disable jsoup entity escape by Default. Set Html.DISABLE_HTML_ENTITY_ESCAPE to...

Disable jsoup entity escape by Default. Set Html.DISABLE_HTML_ENTITY_ESCAPE to false to enable it.  #149

webmagic-core/src/main/java/us/codecraft/webmagic/selector/Html.java

@@ -3,6 +3,7 @@ package us.codecraft.webmagic.selector;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
+import org.jsoup.nodes.Entities;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -19,6 +20,24 @@ public class Html extends HtmlNode {
 
     private Logger logger = LoggerFactory.getLogger(getClass());
 
+	private static volatile boolean INITED = false;
+
+	/**
+	 * Disable jsoup html entity escape. It can be set just before any Html instance is created.
+	 */
+	public static boolean DISABLE_HTML_ENTITY_ESCAPE = true;
+
+	/**
+	 * Disable jsoup html entity escape. It is a hack way only for jsoup 1.7.2.
+	 */
+	private void disableJsoupHtmlEntityEscape() {
+		if (DISABLE_HTML_ENTITY_ESCAPE && !INITED) {
+			Entities.EscapeMode.base.getMap().clear();
+			Entities.EscapeMode.extended.getMap().clear();
+			INITED = true;
+		}
+	}
+
     /**
      * Store parsed document for better performance when only one text exist.
      */
@@ -26,6 +45,7 @@ public class Html extends HtmlNode {
 
     public Html(String text) {
         try {
+			disableJsoupHtmlEntityEscape();
             this.document = Jsoup.parse(text);
         } catch (Exception e) {
             this.document = null;

webmagic-core/src/test/java/us/codecraft/webmagic/HtmlTest.java

@@ -3,6 +3,8 @@ package us.codecraft.webmagic;
 import org.junit.Test;
 import us.codecraft.webmagic.selector.Html;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 /**
  * @author code4crafter@gmail.com <br>
  * Date: 13-4-21
@@ -13,9 +15,19 @@ public class HtmlTest {
     @Test
     public void testRegexSelector() {
         Html selectable = new Html("aaaaaaab");
-//        Assert.assertEquals("abbabbab", (selectable.regex("(.*)").replace("aa(a)", "$1bb").toString()));
-        System.out.println(selectable.regex("(.*)").replace("aa(a)", "$1bb").toString());
-
+		assertThat(selectable.regex("(a+b)").replace("aa(a)", "$1bb").toString()).isEqualTo("abbabbab");
     }
 
+	@Test
+	public void testDisableJsoupHtmlEntityEscape() throws Exception {
+		Html html = new Html("aaaaaaa&b");
+		assertThat(html.regex("(aaaaaaa&b)").toString()).isEqualTo("aaaaaaa&b");
+	}
+
+	@Test
+	public void testEnableJsoupHtmlEntityEscape() throws Exception {
+		Html.DISABLE_HTML_ENTITY_ESCAPE = false;
+		Html html = new Html("aaaaaaa&b");
+		assertThat(html.regex("(aaaaaaa&amp;b)").toString()).isEqualTo("aaaaaaa&amp;b");
+	}
 }