Rhino engine in jdk6 and jdk7 was loaded as bootstrap code. Nashorn is loaded by extension class loader.
You can check Class.getResourceAsStream's javadoc: https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#getResourceAsStream%28java.lang.String%29 " If this object was loaded by the bootstrap class loader, the method delegates to ClassLoader.getSystemResourceAsStream(java.lang.String). " https://docs.oracle.com/javase/7/docs/api/java/lang/ClassLoader.html#getSystemResourceAsStream%28java.lang.String%29 "This method locates the resource through the system class loader (see getSystemClassLoader())." With Nashorn/jjs -classpath, you get new class loader (different from system/launcher loader). And so calling ClassLoader.getSystemResourceAsStream won't work either. But, if you do load a class from your jjs -classpath path, then you can get Class object of it and then call getResourceAsStream on it - like: jjs -cp foo jjs> var cl = com.acme.Foo.class; // assuming such as a class from path "foo" jjs> cl.getResourceAsStream("t.txt"); Also, you can use __DIR__ variable to load script relative files. The directory in which your script is stored is available via __DIR__ variable. You can use that to load script relative resources. Hope this helps, -Sundar On 9/26/2016 10:46 AM, Edgar Merino wrote: > Hello: > > > I don't really know if this belongs here, I couldn't find much > documentation on this issue. > > I've noticed that, when using nashorn's command line utility JJS, > any resource that is included in the classpath, be it included in a > JAR or located in a classpath folder, is not available to scripts. A > simple example: > > |echo "java.lang.Class.class.getResourceAsStream('/test.txt')"|jjs -cp .| > > When a file "test.txt" is included in the current folder (which is > added to the classpath via the -cp option), this code always returns > "null". If I run a similar example using java and the jvm directly I > get the expected resource (an input stream reference). Under rhino I > get the same results, using a similar example. > > Is this the expected behavior? Is there a way to access resources > under the classpath in nashorn? This is causing a lot of problems with > spring contexts for example, everytime I try to load my app context > from an XML file I get problems because it cannot find some needed > resources at runtime. This worked fine under rhino, but we are > planning on migrating to nashorn. > > I found this github wiki, were it states loading resources is only > possible for nashorn's app class loader: > https://github.com/DaniHaag/snippets/wiki/Nashorn > <https://github.com/DaniHaag/snippets/wiki/Nashornhttps://github.com/DaniHaag/snippets/wiki/Nashorn> > > This related question is given a useful answer, but it involves > creating the nashorn engine programatically, instead of using JJS: > http://stackoverflow.com/questions/30225398/java-8-scriptengine-across-classloaders > > > > Any help is greatly appreciated. > > Edgar Merino. >
