Read a file within a jar from java code present in same jar

问题

I am trying to read a xsd file kept in a jar using java code kept inside the same jar. I am using the following code.

URL tmpurl = ClassLoader.getSystemResource("com/abc/filename.xsd");

Schema s = schemaFactory.newSchema(tmpurl);
jaxbUnMarshaller.setSchema(s);

It is working fine when I run it as a separate project but when I make a jar, tmpurl is null, hence the setSchema gives a null pointer exception.

Can you please a workaround that can make it run even inside a jar file.

回答1:

Hava you tried?

getClass().getClassLoader().getResource()

Also your classpath in manifest file in jar does matter.

Please, take a look at accepted answers in here:

Class.getResource and ClassLoader.getSystemResource: is there a reason to prefer one to another?

Loading files with ClassLoader

来源：https://stackoverflow.com/questions/14209107/read-a-file-within-a-jar-from-java-code-present-in-same-jar