330229 - Jetty tries to parse META-INF/*.tld when jsp-api is not on classpath, causing DTD entity resoluton to fail

git-svn-id: svn+ssh://dev.eclipse.org/svnroot/rt/org.eclipse.jetty/jetty/trunk@2525 7e9141cc-0065-0410-87d8-b60c137991c4

VERSION.txt

@@ -2,6 +2,7 @@ jetty-7.2.2-SNAPSHOT
  + 330210 Improve performance of writing large bytes arrays
  + 330208 Support new wording on servlet-mapping and filter-mapping merging from servlet3.0a
  + 330188 Reject web-fragment.xml with same <name> as another already loaded one
+ + 330229 Jetty tries to parse META-INF/*.tld when jsp-api is not on classpath, causing DTD entity resoluton to fail
 
 jetty-7.2.1.v20101111 11 November 2010
  + 324679 Fixed dedection of write before static content

jetty-webapp/src/main/java/org/eclipse/jetty/webapp/TagLibConfiguration.java

@@ -220,6 +220,16 @@ public class TagLibConfiguration extends AbstractConfiguration
     @Override
     public void preConfigure(WebAppContext context) throws Exception
     {
+        try
+        {
+            Class jsp_page = Loader.loadClass(WebXmlConfiguration.class,"javax.servlet.jsp.JspPage");
+        }
+        catch (Exception e)
+        {
+            //no jsp available, don't parse TLDs
+            return;
+        }
+
         Set tlds = new HashSet();
 
         // Find tld's from web.xml
@@ -297,7 +307,8 @@ public class TagLibConfiguration extends AbstractConfiguration
     {         
         if (_processor == null)
         {
-            Log.warn("No TldProcessor configured, skipping tld processing");
+            if (Log.isDebugEnabled())
+                Log.debug("No TldProcessor configured, skipping tld processing");
             return;
         }