FileNotFoundException when accessing a resource file after deploy to tomcat

Question

I got two maven projects:

1. A JAR with a resource file accessed from its code
2. A WAR that has a RESTful service that uses the JAR

When the JAR unit tests run, it is able to access the resource file.

After deploying to tomcat, the access to the resource file fails with FileNotFoundException

I tried both these lines but the same results:

File file = new File(getClass().getClassLoader().getResource("file.xml").getFile());

And

File file = new File(getClass().getResource("/file.xml").getFile());

When debugging, I found the value of file is as following:

file:/usr/share/tomcat8/webapps/ROOT/WEB-INF/lib/com.projectgroup.projectname-1.0-SNAPSHOT.jar!/file.xml

I've opened the JAR at that location and found the file there. So any idea why this is happening.

Answer 1

Try to use getResourceAsStream() instead of resource.getFile()

Another way to get your xml file loaded in your classpath is by using the Spring Framework as below:

PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
resolver.getResources("classpath*:your/package/**/file.xml");

Answer 2

您的文件必须位于war文件中的类路径中，是否在构建过程中将其打包到war中？