I am trying to load a resource that is contained within an embedded JAR file. The project is actually deployed in JBoss using an EAR file with the following structure:
deploy.ear
|
|-> project.sar
|
|-> sub_project.jar
| |
| |-> settings.xml
|
|-> com/path/project/
|
|-> main.class
From main.java
I'd like to get a InputStream
for settings.xml
. What is the correct way to do this?
My current understanding that the following code should work, but it is returning null
:
this.getClass().getResourceAsStream("settings.xml");
Update
After some trial and error, the following statements work:
getClass().getResourceAsStream("/settings.xml");
getClass().getResourceAsStream("/sub_project.jar/settings.xml");
getClass().getClassLoader().getResourceAsStream("/settings.xml");
getClass().getClassLoader().getResourceAsStream("settings.xml");
getClass().getClassLoader().getResourceAsStream("sub_project.jar/settings.xml");
getClass().getClassLoader().getResourceAsStream("/sub_project.jar/settings.xml");
This might be a good resource: http://one-jar.sourceforge.net/version-0.95/
The main idea is that the inner JAR is not loaded by the ClassLoader that loaded the outer JAR automatically, you need to do so manually, eg by using a StreamClassLoader
to load the inner jar
Only then, from your own ClassLoader you can get that resource using getResourceAsStream(...)
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