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https://issues.apache.org/jira/browse/WICKET-3163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931413#action_12931413
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Martin Grigorov commented on WICKET-3163:
-----------------------------------------
As discussed in the IRC channel WicketFilterTest fails here from time to time
with "Connection timed out" message. But Java doesn't say what is the endpoint
for that connection.
Removing the DOCTYPE for web1.xml and web2.xml temporarily "fixes" the problem.
This started to happen last week.
Running the build in offline (mvn -o clean install) mode passes.
I suspect DTD resolving to be the problem but I am not sure.
> support building wicket offline by resolving DTD references locally
> -------------------------------------------------------------------
>
> Key: WICKET-3163
> URL: https://issues.apache.org/jira/browse/WICKET-3163
> Project: Wicket
> Issue Type: Improvement
> Components: wicket
> Affects Versions: 1.5-M3
> Reporter: Peter Ertl
> Assignee: Peter Ertl
> Attachments: LocalEntityResolver.java
>
>
> Wicket developers, please give me some comment on this:
> Some wicket test cases parse XML which refers to an external DTD.
> An example is org.apache.wicket.protocol.http.WicketFilterTest
> It refers to org.apache.wicket.util.file.WebXmlFile will will parse a custom
> web.xml.
> The web.xml will make the parser to look up
> http://java.sun.com/dtd/web-app_2_3.dtd
> When building wicket offline this will cause a network error and the test
> will fail.
> I would like to add
> org.apache.wicket.util.xml.LocalEntityResolver
> which may contain a set of local entitites to avoid hitting the network.
> As wicket 1.5 is getting close to final I would like to get some feedback
> first before putting that into trunk...
> By adding this like to WebXmlFile network lookup would be avoided.
>
> DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
> DocumentBuilder builder = factory.newDocumentBuilder();
> builder.setEntityResolver(LocalEntityResolver.getDefault()); // no more
> network lookups
> Document document = builder.parse(is);
> ----------------------------------------------------
> package org.apache.wicket.util.xml;
> import org.apache.wicket.util.lang.Args;
> import org.xml.sax.EntityResolver;
> import org.xml.sax.InputSource;
> import org.xml.sax.SAXException;
> import javax.servlet.Filter;
> import java.io.IOException;
> import java.io.InputStream;
> import java.util.HashMap;
> import java.util.Map;
> /**
> * entity resolver that tries to locate a document type definition (DTD)
> using a set of custom entity resolvers
> *
> * @author pete
> */
> public class LocalEntityResolver implements EntityResolver
> {
> private final Map<EntityKey, EntityLocator> entities = new
> HashMap<EntityKey, EntityLocator>(3);
> public static LocalEntityResolver getDefault()
> {
> LocalEntityResolver resolver = new LocalEntityResolver();
>
> //
> // look up servlet 2.3 web.xml DTD right from inside servlet-api.jar
> //
> resolver.put(new EntityKey("-//Sun Microsystems, Inc.//DTD Web
> Application 2.3//EN",
>
> "http://java.sun.com/dtd/web-app_2_3.dtd";),
> new ServletApiEntityLocator("web-app_2_3.dtd"));
> return resolver;
> }
> public void put(EntityKey key, EntityLocator locator)
> {
> Args.notNull(key, "key");
> Args.notNull(locator, "locator");
> entities.put(key, locator);
> }
> public InputSource resolveEntity(String id, String url) throws
> SAXException, IOException
> {
> for (Map.Entry<EntityKey, EntityLocator> entry :
> entities.entrySet())
> if (entry.getKey().id.equals(id) ||
> entry.getKey().url.equals(url))
> return entry.getValue().locateInputSource();
> return null;
> }
> public static class EntityKey
> {
> private final String id;
> private final String url;
> private EntityKey(String id, String url)
> {
> Args.notEmpty(id, "id");
> Args.notEmpty(url, "url");
> this.id = id;
> this.url = url;
> }
> @Override
> public boolean equals(Object o)
> {
> if (this == o)
> return true;
> if (!(o instanceof EntityKey))
> return false;
> EntityKey key = (EntityKey) o;
> if (!id.equals(key.id))
> return false;
> return url.equals(key.url);
> }
> @Override
> public int hashCode()
> {
> int result = id.hashCode();
> result = 31 * result + url.hashCode();
> return result;
> }
> }
> public static interface EntityLocator
> {
> InputSource locateInputSource() throws SAXException,
> IOException;
> }
> public static class ServletApiEntityLocator implements EntityLocator
> {
> private final String name;
> private ServletApiEntityLocator(String name)
> {
> this.name = name;
> }
> public InputSource locateInputSource()
> {
> InputStream stream =
> Filter.class.getResourceAsStream("resources/" + name);
> if (stream == null)
> return null;
> return new InputSource(stream);
> }
> }
> }
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