Uber jar can't be executed from an UNC path

[emassip]

Spring boot generated über jar for a simple CommandLineRunner app currently does not support being executed from a Windows UNC path such as java -jar \\myhost\myshare\my-sb-app.jar.

Boot first raises an Unable to determine code source archive IllegalStateException thrown by Launcher because path variable don't get the leading "//" sequence.

This can be easily fixed by :

    URI location = (codeSource == null ? null : codeSource.getLocation().toURI());
-   String path = (location == null ? null : location.getPath());
+   String path = (location == null ? null : location.getSchemeSpecificPart());
    if (path == null) {

Second is in ExecutableArchiveLauncher#createClassLoader where some wrong file://myhost/myshare/my-sb-app.jar URL is added to the copy variable while it should have been file:////myhost/myshare/my-sb-app.jar and subsequently ripped off by #addDefaultClassloaderUrl.

This time I don't know how to fix it for good (hence I'm not posting a PR), my dirty workaround is :

        if (loader instanceof URLClassLoader) {

final URL badURL = MyApplication.class.getProtectionDomain().getCodeSource().getLocation();
final URL goodURL = getArchive().getUrl();

            for (URL url : ((URLClassLoader) loader).getURLs()) {

if (url.equals(badURL)) {
    url = goodURL;
}

                if (addDefaultClassloaderUrl(urls, url)) {
                    copy.add(url);
                }
            }
        }

loader is sun.misc.Launcher$AppClassLoader running from JRE 7.

[emassip]

Just tested with 1.1.8.BUILD-20141006.125426-15 : it works like a charm, thank you.

[philwebb]

Sweet. It took about 20 mins to fix and 4 hours to get my Windows VM to boot properly :)

[emassip]

Of course. That's the point of reporting such an issue.