ivy cannot d/l file but wget can - ant

Question

My ivy dependency:
<dependency org="googlecode.com" name="jslint4java" rev="2.0.1" e:suffix="-src">
<artifact name="jslint4java" type="zip"/>
</dependency>
My ivy settings:
<url name="googlecode">
<artifact pattern="http://[module].[organization]/files/[artifact]-[revision][suffix].[ext]"/>
</url>
...
<module organisation="googlecode.com" resolver="googlecode"/>
When I try to resolve the dependencies, I got the following error:
[ivy:retrieve] == resolving dependencies
...#blog;working#...->googlecode.com#jslint4java;2.0.2
[default->*] [ivy:retrieve] tried
http://jslint4java.googlecode.com/files/jslint4java-2.0.2-dist.zip
[ivy:retrieve] CLIENT ERROR: Not Found
url=http://jslint4java.googlecode.com/files/jslint4java-2.0.2-dist.zip
[ivy:retrieve] googlecode: no ivy file nor artifact found for
googlecode.com#jslint4java;2.0.2 [ivy:retrieve] WARN: module not found: googlecode.com#jslint4java;2.0.2 [ivy:retrieve] WARN: ====
googlecode: tried [ivy:retrieve] WARN: -- artifact
googlecode.com#jslint4java;2.0.2!jslint4java.zip: [ivy:retrieve] WARN:
http://jslint4java.googlecode.com/files/jslint4java-2.0.2-dist.zip
I tried to d/l the file by using the url in the last line with wget and the it went well.
But I cannot figure out why ivy failed to d/l the file.

Answer 1

So, I ran the ant task with -d flag to check more info and that's the outcome:
[ivy:resolve] HTTP response status: 404 url=http://jslint4java.googlecode.com/files/jslint4java-2.0.1-src.zip.sha1
[ivy:resolve] CLIENT ERROR: Not Found url=http://jslint4java.googlecode.com/files/jslint4java-2.0.1-src.zip.sha1
[ivy:resolve] HTTP response status: 404 url=http://jslint4java.googlecode.com/files/jslint4java-2.0.1-src.zip.md5
[ivy:resolve] CLIENT ERROR: Not Found url=http://jslint4java.googlecode.com/files/jslint4java-2.0.1-src.zip.md5
Notice that md5 doesn't exist, you have to override the checksums option in the resolver.
<url name="googlecode" checksums="sha1">
I tried the sha1 ONLY, (the default is sha1,md5) and it worked, even though the sha1 failed to download as well.
try to experiment in that area.

Answer 2

I suggest you setup a configuration in your ivy file.
Example
After running the build the following files are present:
|-- build.xml
|-- ivysettings.xml
|-- ivy.xml
`-- lib
`-- jslint4java-2.0.1-src.zip
ivy.xml
<ivy-module version="2.0" xmlns:e="http://ant.apache.org/ivy/extra">
<info organisation="com.myspotontheweb" module="demo"/>
<configurations>
<conf name="source" description="source code distro"/>
</configurations>
<dependencies>
<dependency org="googlecode.com" name="jslint4java" rev="2.0.1" e:suffix="src" conf="source->default">
<artifact name="jslint4java" type="zip"/>
</dependency>
</dependencies>
</ivy-module>
Notes:
Added a "source" configuration. Logical grouping within my ivy project to differentiate from other kinds of dependency.
Note the extra "conf" attribute on the dependency. Mapped to the remote "default" configuration. Unless the remote module has an ivy or POM file default is the safest option.
Revised the extra attribute "suffix". Removed the "-" character. Not a big deal technically, I just think it's best not included in the dependency declaration.
ivysettings.xml
<ivysettings>
<settings defaultResolver="googlecode" />
<resolvers>
<url name="googlecode">
<artifact pattern="http://[module].[organization]/files/[artifact]-[revision]-[suffix].[ext]"/>
</url>
</resolvers>
</ivysettings>
Notes:
Personally I would explicitly state the hostname of the remote repository, here in the settings file (Instead of taking it from the dependency information). This will work though.
build.xml
<project name="demo" default="retrieve" xmlns:ivy="antlib:org.apache.ivy.ant">
<target name="retrieve" description="Use ivy to retrieve artifacts">
<ivy:retrieve pattern="lib/[artifact]-[revision](-[suffix]).[ext]" conf="source"/>
</target>
<target name="clean" description="Cleanup build files">
<delete dir="lib"/>
</target>
<target name="clean-all" depends="clean" description="Additionally purge ivy cache">
<ivy:cleancache/>
</target>
</project>
Notes:
Note how the "suffix" attribute is enclosed within parenthesis. This is an optional extra parameter and may not be part of a dependency.