How exclude files/folder from Maven outputDirectory - maven

Question

I am developing maven project using Spring boot and JSF. According to this example, the managed bean .class files should be put into /src/webapp/WEB-INF/classes directory, to be shown on JFS views. This is achieved by adding outputDirectory tag to pom.xml:
<build>
<resources>
<resource>
<filtering>true</filtering>
<directory>src/main/resources</directory>
</resource>
</resources>
<outputDirectory>src/main/webapp/WEB-INF/classes</outputDirectory>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>${maven-compiler-plugin.version}</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.source.version}</source>
<target>${java.target.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>${maven-war-plugin.version}</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
</plugins>
</build>
But, I have noticed that except *.class files, there is also stored content of src/main/resources directory: i18n folder, templates folder, *.sql files, application.properties etc....
My question: How to exclude these unnecessary files/folders from /src/webapp/WEB-INF/classes directory?

Answer 1

Just add the file you dont want to the maven exludes.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/src/main/java/myClassesToExclude*.java</exclude>
</excludes>
</configuration>
</plugin>

Answer 2

There are different ways of excluding files in Maven. I am pointing out the general ways here.
To exclude a resource, you only need to add an element.
<project>
...
<name>My Resources Plugin Practice Project</name>
...
<build>
...
<resources>
<resource>
<directory>[your directory]</directory>
<excludes>
<exclude>[non-resource file #1]</exclude>
<exclude>[non-resource file #2]</exclude>
<exclude>[non-resource file #3]</exclude>
...
<exclude>[non-resource file #n]</exclude>
</excludes>
</resource>
...
</resources>
...
</build>
...
</project>
To include everything except the bitmaps, jpegs, and gifs, we can simply exclude them by:
<project>
...
<name>My Resources Plugin Practice Project</name>
...
<build>
...
<resources>
<resource>
<directory>src/my-resources</directory>
<excludes>
<exclude>**/*.bmp</exclude>
<exclude>**/*.jpg</exclude>
<exclude>**/*.jpeg</exclude>
<exclude>**/*.gif</exclude>
</excludes>
</resource>
...
</resources>
...
</build>
...
</project>
You can also have both and elements. For example, if you want to include all text files that does not contain the word "test" in their filename.
<project>
...
<name>My Resources Plugin Practice Project</name>
...
<build>
...
<resources>
<resource>
<directory>src/my-resources</directory>
<includes>
<include>**/*.txt</include>
</includes>
<excludes>
<exclude>**/*test*.*</exclude>
</excludes>
</resource>
...
</resources>
...
</build>
...
</project>
resource maven.apache.org

Answer 3

If you want to exclude from war file then use [warSourceExcludes] or [packagingExcludes] tag as :
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceExcludes>WEB-INF/abc.xml,WEB-INF/pqr.xml</warSourceExcludes>
<packagingExcludes>WEB-INF/abc.xml,WEB-INF/pqr.xml</packagingExcludes>
</configuration>
</plugin>