Fix getting links from javadoc.io

[BrainStone]

The base URL is not static.javadoc.io/, but instead www.javadoc.io/doc/.

The other link is not reachable. See https://www.javadoc.io/

[larsgrefer]

For me, static.javadoc.io still works: https://static.javadoc.io/org.springframework/spring-core/4.3.11.RELEASE/index.html

[BrainStone]

Doesn't work for other libraries though. Like https://static.javadoc.io/org.slf4j/slf4j-api/1.7.25/ doesn't work, but https://www.javadoc.io/doc/org.slf4j/slf4j-api/1.7.25/ does.
And with your example both work: https://static.javadoc.io/org.springframework/spring-core/4.3.11.RELEASE/ and https://www.javadoc.io/doc/org.springframework/spring-core/4.3.11.RELEASE/

And again it clearly states on the first bulletpoint under Developer Overview to use javadoc.io/doc/ on https://www.javadoc.io/.

[larsgrefer]

slf4j also works on static.javadoc.io: https://static.javadoc.io/org.slf4j/slf4j-api/1.7.25/index.html

If you investigate the links in https://www.javadoc.io/doc/org.springframework/spring-core/4.3.11.RELEASE you'll see they are all pointing to static.javadoc.io

In addition to that javadoc can't link against javadoc.io/docs because the package-list file isn't present and the links generated by javadoc won't work on javadoc.io/docs but on static.javadoc.io.
For example: https://static.javadoc.io/org.springframework/spring-core/4.3.11.RELEASE/org/springframework/core/annotation/AnnotationAwareOrderComparator.html#sort-java.util.List- works, but https://www.javadoc.io/docs/org.springframework/spring-core/4.3.11.RELEASE/org/springframework/core/annotation/AnnotationAwareOrderComparator.html#sort-java.util.List- does not

[BrainStone]

Hm. Well, can you then maybe explain to me, why I get this error? javadoc: warning - Error fetching URL: http://static.javadoc.io/org.slf4j/slf4j-api/1.7.25/

[larsgrefer]

Can you provide a link to the repository/commit where this error occurs? so i can reproduce it?

[BrainStone]

Sadly no, as the repo is private. I'll try to create a test repo where the error occurs.

[BrainStone]

Please apologize the long wait, but here's a repo where I can easily reproduce the error: https://github.com/BrainStone/javadoc_link_test

[larsgrefer]

What is your complete output when you run ./gradlew clean javadoc on the test project?

[BrainStone]

$ ./gradlew clean javadoc
Starting a Gradle Daemon, 1 incompatible and 1 stopped Daemons could not be reused, use --status for details
Parallel execution is an incubating feature.
Build cache is an incubating feature.
:clean
:generateMetadata
:compileJavaNote: Reading extra plugin metadata from C:\Users\Yannick\Desktop\Neuer Ordner\javadoc_link_test\build\tmp\generateMetadata\mcmod.info
warning: The following options were not recognized by any processor: '[extraMetadataFiles, metadataOutputFile]'

:processResources
:classes
:configureJavadocLinks
:javadocjavadoc: warning - Error fetching URL: http://static.javadoc.io/org.spongepowered/spongeapi/7.0.0-SNAPSHOT/
javadoc: warning - Error fetching URL: http://static.javadoc.io/org.slf4j/slf4j-api/1.7.25/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.google.inject/guice/4.1.0/
javadoc: warning - Error fetching URL: http://static.javadoc.io/org.spongepowered/plugin-meta/0.4.1/
javadoc: warning - Error fetching URL: http://static.javadoc.io/ninja.leaping.configurate/configurate-hocon/3.3/
javadoc: warning - Error fetching URL: http://static.javadoc.io/ninja.leaping.configurate/configurate-gson/3.3/
javadoc: warning - Error fetching URL: http://static.javadoc.io/ninja.leaping.configurate/configurate-yaml/3.3/
javadoc: warning - Error fetching URL: http://static.javadoc.io/ninja.leaping.configurate/configurate-core/3.3/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.google.guava/guava/21.0/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.google.errorprone/error_prone_annotations/2.0.15/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.google.code.gson/gson/2.8.0/
javadoc: warning - Error fetching URL: http://static.javadoc.io/org.apache.commons/commons-lang3/3.5/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.google.code.findbugs/jsr305/3.0.1/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.github.ben-manes.caffeine/guava/2.5.4/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.github.ben-manes.caffeine/caffeine/2.5.4/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.flowpowered/flow-math/1.0.3/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.flowpowered/flow-noise/1.0.1-SNAPSHOT/
javadoc: warning - Error fetching URL: http://static.javadoc.io/org.ow2.asm/asm/5.2/
javadoc: warning - Error fetching URL: http://static.javadoc.io/javax.inject/javax.inject/1/
javadoc: warning - Error fetching URL: http://static.javadoc.io/aopalliance/aopalliance/1.0/
javadoc: warning - Error fetching URL: http://static.javadoc.io/com.typesafe/config/1.3.1/
javadoc: warning - Error fetching URL: http://static.javadoc.io/org.yaml/snakeyaml/1.18/

22 warnings

BUILD SUCCESSFUL in 25s
6 actionable tasks: 6 executed

[larsgrefer]

When javadoc tries to access the package-list file, cloudflare answers this:

The owner of this website (static.javadoc.io) has banned your access based on your browser's signature

The "browser's signature" in this case is User-Agent: Java/1.8.0_xxx

[larsgrefer]

This should be fixed with version 2.0.2

[BrainStone]

It works now. Thanks a lot!