CDI：beans.xml，我在哪里放你？

Question

I am using Weld as CDI implementation. My integration test, that tries to assemble object graph instantiating Weld container works well , when I have empty beans.xml in src/test/java/META-INF/beans.xml . Here is that simple test:

public class WeldIntegrationTest {
    @Test
    public void testInjector() {
        new Weld().initialize();
        // shouldn't throw exception
    }
}

Now when I run mvn clean install , I always get: Missing beans.xml file in META-INF!

My root folders are "src" and "web" which contains WEB-INF folder, but I also tried to use default maven structure and renamed "web" to "webapp" and moved it to src/main. I tried all the reasonable locations I could thought of:

 - src/main/java/META-INF/beans.xml
 - src/test/java/META-INF/beans.xml
 - web/WEB-INF/beans.xml
 - src/main/webapp/WEB-INF/beans.xml
 - src/main/webapp/META-INF/beans.xml
 - src/main/webapp/META-INF/(empty) and src/main/webapp/WEB-INF/beans.xml

Nothing works so far :/

Answer 1

For EJB and JAR packaging you should place the beans.xml in src/main/resources/META-INF/ .

For WAR packaging you should place the beans.xml in src/main/webapp/WEB-INF/ .

Remember that only .java files should be put in the src/main/java and src/test/java directories. Resources like .xml files should be in src/main/resources .

Answer 2

Just to complement the above answer, here is an official reference on this: https://docs.oracle.com/javaee/6/tutorial/doc/gjbnz.html

quote:

An application that uses CDI must have a file named beans.xml. The file can be completely empty (it has content only in certain limited situations), but it must be present. For a web application, the beans.xml file must be in the WEB-INF directory. For EJB modules or JAR files, the beans.xml file must be in the META-INF directory.

Answer 3

http://www.javamonamour.org/2017/11/cdi-in-java-se-8.html here you can see where I have put it with success, that is under src/META-INF . The post contains a full working example of CDI in Java SE.