[MJAVADOC-532] <link> entries that do not redirect are ignored

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.1
• Fix Version/s: 3.1.0
• Assignee: Guillaume Boué
• Reporter: Andy Wilkinson
• Created: 09/Aug/18 15:58
• Updated: 15/Aug/18 11:19
• Resolved: 09/Aug/18 18:02

Description

If the URL included in a <link> entry does not redirect, the entry is ignored. This appears to happen due to a bug in JavadocUtil.getRedirectUrl which results in a NullPointerException being thrown for URLs that do not redirect.

At the time of writing, you can reproduce the problem with the following code:

package org.apache.maven.plugins.javadoc;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URI;

public class JavadocRedirectBug {

	public static void main(String[] args) throws MalformedURLException, IOException {
		JavadocUtil.getRedirectUrl(URI.create("https://docs.oracle.com/javase/8/docs/api/").toURL(), null);
	}

}