feat: Maven plugin uses CompileSourceRoots

Signed-off-by: tison <[email protected]>

Author: tisonkun

plugin-maven/src/main/java/com/diffplug/spotless/maven/java/Java.java

@@ -20,8 +20,9 @@
 import java.io.File;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
-import java.util.stream.Stream;
 
 import org.apache.maven.model.Build;
 import org.apache.maven.project.MavenProject;
@@ -44,7 +45,15 @@ public class Java extends FormatterFactory {
 	public Set<String> defaultIncludes(MavenProject project) {
 		Path projectDir = project.getBasedir().toPath();
 		Build build = project.getBuild();
-		return Stream.of(build.getSourceDirectory(), build.getTestSourceDirectory())
+
+		List<String> includes = new ArrayList<>();
+		includes.add(build.getSourceDirectory());
+		includes.add(build.getTestSourceDirectory());
+		includes.addAll(project.getCompileSourceRoots());
+		includes.addAll(project.getTestCompileSourceRoots());
+
+		return includes.stream()
+				.distinct()
 				.map(Paths::get)
 				.map(projectDir::relativize)
 				.map(Java::fileMask)