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SonarQube coverage showing 0% even after exclusion

I been working on a SpringBoot project and I am trying to exclude some of the packages from the SonarQube code coverage.
The package that I want to exclude is com.org.projectname.model. I tried, <sonar.exclusions>**/model/*.java</sonar.exclusions> and <sonar.coverage.exclusions>**/model/*.java</sonar.coverage.exclusions>, sill SonarQube is showing 0% coverage, why is that?. Also I am curious that, do we need to have any specific dependency to use <sonar.exclusions>, as I am not using any additional dependency related to SonarQube?
or is there any other way to achieve this?
<properties>
<sonar.exclusions>
**/model/*.java
</sonar.exclusions>
</properties>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.6</version>
<configuration>
<excludes>
</excludes>
</configuration>
<executions>
<execution>
<id>pre-unit-test</id>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<destFile>target/coverage-data/jacoco-ut.exec</destFile>
<propertyName>surefireArgLine</propertyName>
</configuration>
</execution>
<execution>
<id>post-unit-test</id>
<phase>test</phase>
<goals>
<goal>report</goal>
</goals>
<configuration>
<dataFile>target/coverage-data/jacoco-ut.exec</dataFile>
<outputDirectory>target/coverage-reports/jacoco-ut</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>

Code coverage for test framework written in Node and application is in Java

I have written my test framework which is a node service and the application is written in Java. I want to understand how to get code coverage? I have tried to use Jacoco but it did not generate any coverage details. Is there any dependency for node projects for jacoco that I should use ? Or is there any other way of generating code coverage for this type of scenario ?
I have added dependencies to pom.xml as here
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.1.201405082137</version>
<executions>
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
<execution>
<id>default-check</id>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
<configuration>
<dataFile>target/jacoco.exec</dataFile>
<outputDirectory>/target/jacoco</outputDirectory>
</configuration>
</plugin>

My Jacoco report is showing very little code coverage

I am trying to get an idea of how much code coverage I have with some unit tests in Scala and with the source code in Java(tests and code are in different packages). When I run the Jacoco report, it is showing only 4 percent code coverage.
When I go take a look at the report, it shows 0 percent for a lot of files that I have created tests for. What I suspect is that the unit tests are not being included in the report, maybe since all of the test class files are in the target/test-classes directory.
I have tried including the includeTests tag but that didn't have any effect.
Here is how the plugin looks like in the pom:
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco-maven-plugin.version}</version>
<configuration>
<includeTests>true</includeTests>
<!--<includes>
<include>**/test-classes/**</include>
</includes>-->
<excludes>
<exclude>**/dto/**</exclude>
<exclude>**/exceptions/**</exclude>
</excludes>
</configuration>
<executions>
<execution>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
Right now I have commentted out the include tag becasue if I include it, the test compiles with 0 classes. How else can I can include the target/test-classes directory?
Sorry if this is a simple fix, I'm very new with unit testing and Jacoco. Thanks!

This is my personal setup. It's a bit messy and I'm still working out some parts of it but it works for me. You could try this.
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.4</version>
<executions>
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
<execution>
<id>default-check</id>
<goals>
<goal>check</goal>
</goals>
<configuration>
<rules>
<rule>
<element>BUNDLE</element>
<limits>
<limit>
<counter>COMPLEXITY</counter>
<value>COVEREDRATIO</value>
<minimum>0.20</minimum>
</limit>
</limits>
</rule>
</rules>
</configuration>
</execution>
</executions>
</plugin>

How to exclude generated code from a code coverage report?

I've got the following jacoco-maven-plugin configuration:
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<configuration>
<excludes>
<exclude>**/Header*.java</exclude>
</excludes>
</configuration>
<executions>
<execution>
<id>prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
</executions>
</plugin>
Which should exclude from a code coverage report all generated java files that begin with Header. Unfortunately, I still see these classes in my code coverage report which makes the coveralls-maven-plugin fail when I call the coveralls:report. The error I get when I call coveralls:report is:
: No source found for HeaderMyClass.java ->
Which makes me think that the JaCoCo coverage report still contains the data for this class which was automatically generated.

Just add exclusions for report goal in jacoco-maven-plugin configuration
<execution>
<id>coverage-report</id>
<phase>post-integration-test</phase>
<goals>
<goal>report</goal>
</goals>
<configuration>
<excludes>
<exclude>**/*Dto.class</exclude>
<exclude>com/foo/config/*</exclude>
</excludes>
</configuration>
</execution>

Changing the pattern to:
<excludes>
<exclude>**/Header*.*</exclude>
</excludes>
did the trick

Instruct Jacoco and Coveralls to ignore some files from the report

I use Coveralls in a Java project with Maven to create a coverage report for my project and I want to avoid some classes from being included in the coverage computation.
Now, I think that I the build phase I can exlcude the class, e.g. MyClassTest.java as follows:
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.5.201505241946</version>
<executions>
<execution>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>test</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
<configuration>
<excludes>
<exclude>**/*MyClassTest.java</exclude>
</excludes>
</configuration>
</plugin>
<plugin>
<groupId>org.eluder.coveralls</groupId>
<artifactId>coveralls-maven-plugin</artifactId>
<version>4.1.0</version>
</plugin>
Anyway, the coverage doesn't decrease, so I guess that the class MyClass is still computed from the Jacoco report.
In the travis file I call the report phase as follows:
- mvn clean test jacoco:report coveralls:report
Any idea?

My bad!
First the .java has to be removed and replace with .class as correctly suggested by Tunaki.
Second, I don't have to exclude the test class, but the class that I don't want to measure in the coverage!
So it is:
<excludes>
<exclude>**/*MyClass</exclude>
</excludes>
instead of
<excludes>
<exclude>**/*MyClassTest.java</exclude>
</excludes>