diff --git a/src/main/java/ru/ulstu/extractor/config/GlobalDefaultExceptionHandler.java b/src/main/java/ru/ulstu/extractor/config/GlobalDefaultExceptionHandler.java
index 49f1501..c2df5cd 100644
--- a/src/main/java/ru/ulstu/extractor/config/GlobalDefaultExceptionHandler.java
+++ b/src/main/java/ru/ulstu/extractor/config/GlobalDefaultExceptionHandler.java
@@ -1,3 +1,8 @@
+/*
+ * Copyright (C) 2021 Anton Romanov - All Rights Reserved
+ * You may use, distribute and modify this code, please write to: romanov73@gmail.com.
+ */
+
 package ru.ulstu.extractor.config;
 
 import org.springframework.http.HttpStatus;
@@ -6,10 +11,12 @@ import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.servlet.ModelAndView;
 import org.springframework.web.servlet.NoHandlerFoundException;
+import springfox.documentation.annotations.ApiIgnore;
 
 import javax.servlet.http.HttpServletRequest;
 
 @ControllerAdvice
+@ApiIgnore
 class GlobalDefaultExceptionHandler {
     public static final String DEFAULT_ERROR_VIEW = "error";
 
diff --git a/src/main/java/ru/ulstu/extractor/controller/BranchController.java b/src/main/java/ru/ulstu/extractor/controller/BranchController.java
index 031dc48..4006edd 100644
--- a/src/main/java/ru/ulstu/extractor/controller/BranchController.java
+++ b/src/main/java/ru/ulstu/extractor/controller/BranchController.java
@@ -11,10 +11,12 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import ru.ulstu.extractor.repository.BranchRepository;
 import ru.ulstu.extractor.repository.RepositoryRepository;
+import springfox.documentation.annotations.ApiIgnore;
 
 import static ru.ulstu.extractor.controller.Route.LIST_REPOSITORY_BRANCHES;
 
 @Controller
+@ApiIgnore
 public class BranchController {
     private final RepositoryRepository repositoryRepository;
     private final BranchRepository branchRepository;
diff --git a/src/main/java/ru/ulstu/extractor/controller/GitFilteringController.java b/src/main/java/ru/ulstu/extractor/controller/GitFilteringController.java
index f683699..b31b948 100644
--- a/src/main/java/ru/ulstu/extractor/controller/GitFilteringController.java
+++ b/src/main/java/ru/ulstu/extractor/controller/GitFilteringController.java
@@ -15,6 +15,7 @@ import ru.ulstu.extractor.model.Commit;
 import ru.ulstu.extractor.model.OffsetablePageRequest;
 import ru.ulstu.extractor.model.mvc.FilterForm;
 import ru.ulstu.extractor.service.FilteringService;
+import springfox.documentation.annotations.ApiIgnore;
 
 import java.util.List;
 import java.util.Optional;
@@ -24,6 +25,7 @@ import java.util.stream.IntStream;
 import static ru.ulstu.extractor.controller.Route.FILTER_COMMITS;
 
 @Controller
+@ApiIgnore
 public class GitFilteringController {
     private final static int DEFAULT_PAGE_SIZE = 20;
     private final FilteringService filteringService;
diff --git a/src/main/java/ru/ulstu/extractor/controller/GitIndexingController.java b/src/main/java/ru/ulstu/extractor/controller/GitIndexingController.java
index fb6f694..ce2433f 100644
--- a/src/main/java/ru/ulstu/extractor/controller/GitIndexingController.java
+++ b/src/main/java/ru/ulstu/extractor/controller/GitIndexingController.java
@@ -20,6 +20,7 @@ import ru.ulstu.extractor.model.mvc.FilterForm;
 import ru.ulstu.extractor.model.mvc.RepoForm;
 import ru.ulstu.extractor.service.GitRepositoryService;
 import ru.ulstu.extractor.service.IndexService;
+import springfox.documentation.annotations.ApiIgnore;
 
 import java.io.IOException;
 import java.util.List;
@@ -28,6 +29,7 @@ import static ru.ulstu.extractor.controller.Route.FILTER_COMMITS;
 import static ru.ulstu.extractor.controller.Route.INDEXING_NEW_REPOSITORY;
 
 @Controller
+@ApiIgnore
 public class GitIndexingController {
     private final static Logger LOG = LoggerFactory.getLogger(GitIndexingController.class);
     private final GitRepositoryService gitRepositoryService;
diff --git a/src/main/java/ru/ulstu/extractor/controller/RepositoryController.java b/src/main/java/ru/ulstu/extractor/controller/RepositoryController.java
index 9401504..31befc0 100644
--- a/src/main/java/ru/ulstu/extractor/controller/RepositoryController.java
+++ b/src/main/java/ru/ulstu/extractor/controller/RepositoryController.java
@@ -9,10 +9,12 @@ import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 import ru.ulstu.extractor.repository.RepositoryRepository;
+import springfox.documentation.annotations.ApiIgnore;
 
 import static ru.ulstu.extractor.controller.Route.LIST_INDEXED_REPOSITORIES;
 
 @Controller
+@ApiIgnore
 public class RepositoryController {
     private final RepositoryRepository repositoryRepository;
 
diff --git a/src/main/java/ru/ulstu/extractor/controller/StatisticController.java b/src/main/java/ru/ulstu/extractor/controller/StatisticController.java
index eaddd6b..dfa9f24 100644
--- a/src/main/java/ru/ulstu/extractor/controller/StatisticController.java
+++ b/src/main/java/ru/ulstu/extractor/controller/StatisticController.java
@@ -9,6 +9,7 @@ import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 import ru.ulstu.extractor.repository.CommitRepository;
+import springfox.documentation.annotations.ApiIgnore;
 
 import java.util.List;
 import java.util.stream.Collectors;
@@ -16,6 +17,7 @@ import java.util.stream.Collectors;
 import static ru.ulstu.extractor.controller.Route.STATISTIC;
 
 @Controller
+@ApiIgnore
 public class StatisticController {
     private final CommitRepository commitRepository;
 
diff --git a/src/main/java/ru/ulstu/extractor/heuristic/api/StructuralUnitIdentifier.java b/src/main/java/ru/ulstu/extractor/heuristic/api/StructuralUnitIdentifier.java
index 5956542..cfb7188 100644
--- a/src/main/java/ru/ulstu/extractor/heuristic/api/StructuralUnitIdentifier.java
+++ b/src/main/java/ru/ulstu/extractor/heuristic/api/StructuralUnitIdentifier.java
@@ -7,7 +7,8 @@ package ru.ulstu.extractor.heuristic.api;
 
 import ru.ulstu.extractor.heuristic.component.BuildTool;
 import ru.ulstu.extractor.heuristic.component.ProgrammingLanguage;
-import ru.ulstu.extractor.heuristic.model.StructuralUnit;
+import ru.ulstu.extractor.heuristic.model.BusinessLogicUnit;
+import ru.ulstu.extractor.heuristic.model.EntityUnit;
 import ru.ulstu.extractor.heuristic.service.DetectorService;
 import ru.ulstu.extractor.heuristic.service.ProgrammingLanguageService;
 import ru.ulstu.extractor.util.StringUtils;
@@ -24,11 +25,16 @@ import static ru.ulstu.extractor.heuristic.service.DetectorService.LangDetectScr
 import static ru.ulstu.extractor.heuristic.service.DetectorService.LangDetectScrupulousness.LOW;
 
 public abstract class StructuralUnitIdentifier {
-    public List<StructuralUnit> getEntityClasses(String projectPath, List<File> projectFiles, List<File> rootProjectFiles) {
+    public List<EntityUnit> getEntityClasses(String projectPath, List<File> projectFiles, List<File> rootProjectFiles) {
         String subDirectory = getSourceDirectory(rootProjectFiles);
         return getEntityClasses(projectPath, subDirectory, projectFiles);
     }
 
+    public List<BusinessLogicUnit> getBusinessLogicClasses(String projectPath, List<File> projectFiles, List<File> rootProjectFiles) {
+        String subDirectory = getSourceDirectory(rootProjectFiles);
+        return getBusinessLogicClasses(projectPath, subDirectory, projectFiles);
+    }
+
     public abstract boolean canAppliedToCode(String sourceCode);
 
     public abstract boolean canAppliedToFile(File projectFile);
@@ -39,15 +45,17 @@ public abstract class StructuralUnitIdentifier {
 
     public abstract boolean isEntityClass(String sourceCode);
 
+    public abstract boolean isBusinessLogicClass(String sourceCode);
+
     protected abstract boolean isBusinessLogicClass(File file);
 
-    public abstract List<StructuralUnit> getBusinessLogicClasses();
+    public abstract List<BusinessLogicUnit> getBusinessLogicClasses(String projectPath, String subDirectory, List<File> projectFiles);
 
     public abstract boolean isMultiModuleProject();
 
     public abstract Optional<BuildTool> getBuildTool(List<File> rootDirectoryFiles);
 
-    protected abstract List<StructuralUnit> getEntityClasses(String projectPath, String subDirectory, List<File> projectFiles);
+    protected abstract List<EntityUnit> getEntityClasses(String projectPath, String subDirectory, List<File> projectFiles);
 
     protected abstract String getSourceDirectory(List<File> rootProjectFiles);
 
diff --git a/src/main/java/ru/ulstu/extractor/heuristic/controller/StructuralUnitController.java b/src/main/java/ru/ulstu/extractor/heuristic/controller/StructuralUnitController.java
index ff9b7fa..7024d56 100644
--- a/src/main/java/ru/ulstu/extractor/heuristic/controller/StructuralUnitController.java
+++ b/src/main/java/ru/ulstu/extractor/heuristic/controller/StructuralUnitController.java
@@ -8,7 +8,8 @@ package ru.ulstu.extractor.heuristic.controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
-import ru.ulstu.extractor.heuristic.model.StructuralUnit;
+import ru.ulstu.extractor.heuristic.model.BusinessLogicUnit;
+import ru.ulstu.extractor.heuristic.model.EntityUnit;
 import ru.ulstu.extractor.heuristic.service.StructuralUnitService;
 import ru.ulstu.extractor.service.GitRepositoryService;
 
@@ -29,8 +30,14 @@ public class StructuralUnitController {
     }
 
     @GetMapping("get-entities")
-    public List<StructuralUnit> getEntities(String repositoryUrl) throws IOException {
+    public List<EntityUnit> getEntities(String repositoryUrl) throws IOException {
         File rootPath = gitRepositoryService.getProjectDirectoryFile(repositoryUrl);
         return structuralUnitService.getEntities(rootPath);
     }
+
+    @GetMapping("get-business-logic")
+    public List<BusinessLogicUnit> getBusinessLogic(String repositoryUrl) throws IOException {
+        File rootPath = gitRepositoryService.getProjectDirectoryFile(repositoryUrl);
+        return structuralUnitService.getBusinessLogic(rootPath);
+    }
 }
diff --git a/src/main/java/ru/ulstu/extractor/heuristic/model/BusinessLogicUnit.java b/src/main/java/ru/ulstu/extractor/heuristic/model/BusinessLogicUnit.java
new file mode 100644
index 0000000..9d8e132
--- /dev/null
+++ b/src/main/java/ru/ulstu/extractor/heuristic/model/BusinessLogicUnit.java
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2021 Anton Romanov - All Rights Reserved
+ * You may use, distribute and modify this code, please write to: romanov73@gmail.com.
+ */
+
+package ru.ulstu.extractor.heuristic.model;
+
+import java.io.File;
+
+public class BusinessLogicUnit extends StructuralUnit {
+
+    public BusinessLogicUnit(String projectPath, File file) {
+        super(projectPath, file);
+    }
+}
diff --git a/src/main/java/ru/ulstu/extractor/heuristic/service/JavaIdentifier.java b/src/main/java/ru/ulstu/extractor/heuristic/service/JavaIdentifier.java
index 438ed33..c446fd1 100644
--- a/src/main/java/ru/ulstu/extractor/heuristic/service/JavaIdentifier.java
+++ b/src/main/java/ru/ulstu/extractor/heuristic/service/JavaIdentifier.java
@@ -13,8 +13,8 @@ import ru.ulstu.extractor.heuristic.api.StructuralUnitIdentifier;
 import ru.ulstu.extractor.heuristic.component.BuildTool;
 import ru.ulstu.extractor.heuristic.component.JavaProgrammingLanguage;
 import ru.ulstu.extractor.heuristic.component.ProgrammingLanguage;
+import ru.ulstu.extractor.heuristic.model.BusinessLogicUnit;
 import ru.ulstu.extractor.heuristic.model.EntityUnit;
-import ru.ulstu.extractor.heuristic.model.StructuralUnit;
 import ru.ulstu.extractor.util.StringUtils;
 
 import java.io.File;
@@ -29,6 +29,7 @@ import static ru.ulstu.extractor.heuristic.service.DetectorService.LangDetectScr
 @Service
 public class JavaIdentifier extends StructuralUnitIdentifier {
     private static final String ENTITY_ANNOTATION = "@Entity";
+    private static final String SERVICE_ANNOTATION = "@Service";
     private final DetectorService detectorService;
     private final BuildToolService buildToolService;
     private final ProgrammingLanguageService programmingLanguageService;
@@ -56,7 +57,7 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
     }
 
     @Override
-    public List<StructuralUnit> getEntityClasses(String projectPath, String subDirectory, List<File> projectFiles) {
+    public List<EntityUnit> getEntityClasses(String projectPath, String subDirectory, List<File> projectFiles) {
         return projectFiles.stream()
                 .filter(file -> StringUtils.fileInSubdirectory(file.getPath(), projectPath, subDirectory))
                 .filter(this::isEntityClass)
@@ -64,15 +65,14 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
                 .collect(Collectors.toList());
     }
 
-    protected Optional<ProgrammingLanguage> getMainProgrammingLanguage(String sourceCode) {
-        return sourceCodeContainsClass(sourceCode)
-                ? Optional.of(getProgrammingLanguage())
-                : Optional.empty();
-    }
 
     @Override
-    public List<StructuralUnit> getBusinessLogicClasses() {
-        return null;
+    public List<BusinessLogicUnit> getBusinessLogicClasses(String projectPath, String subDirectory, List<File> projectFiles) {
+        return projectFiles.stream()
+                .filter(file -> StringUtils.fileInSubdirectory(file.getPath(), projectPath, subDirectory))
+                .filter(this::isBusinessLogicClass)
+                .map(file -> new BusinessLogicUnit(projectPath, file))
+                .collect(Collectors.toList());
     }
 
     @Override
@@ -85,6 +85,12 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
         return buildToolService.getProjectBuildTool(rootDirectoryFiles);
     }
 
+    protected Optional<ProgrammingLanguage> getMainProgrammingLanguage(String sourceCode) {
+        return sourceCodeContainsClass(sourceCode)
+                ? Optional.of(getProgrammingLanguage())
+                : Optional.empty();
+    }
+
     @Override
     protected DetectorService getDetectorService() {
         return detectorService;
@@ -120,6 +126,16 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
         return false;
     }
 
+    @Override
+    public boolean isBusinessLogicClass(String sourceCode) {
+        try {
+            return classContainsAnnotation(sourceCode, SERVICE_ANNOTATION);
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
+        return false;
+    }
+
     private boolean classContainsAnnotation(File file, String annotationDeclaration) throws IOException {
         return classContainsAnnotation(new String(Files.readAllBytes(file.toPath())), annotationDeclaration);
     }
@@ -152,6 +168,11 @@ public class JavaIdentifier extends StructuralUnitIdentifier {
 
     @Override
     protected boolean isBusinessLogicClass(File file) {
+        try {
+            return file.getName().endsWith("java") && classContainsAnnotation(file, SERVICE_ANNOTATION);
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
         return false;
     }
 }
diff --git a/src/main/java/ru/ulstu/extractor/heuristic/service/StructuralUnitService.java b/src/main/java/ru/ulstu/extractor/heuristic/service/StructuralUnitService.java
index c7bdfcc..4070c10 100644
--- a/src/main/java/ru/ulstu/extractor/heuristic/service/StructuralUnitService.java
+++ b/src/main/java/ru/ulstu/extractor/heuristic/service/StructuralUnitService.java
@@ -7,7 +7,8 @@ package ru.ulstu.extractor.heuristic.service;
 
 import org.springframework.stereotype.Service;
 import ru.ulstu.extractor.heuristic.api.StructuralUnitIdentifier;
-import ru.ulstu.extractor.heuristic.model.StructuralUnit;
+import ru.ulstu.extractor.heuristic.model.BusinessLogicUnit;
+import ru.ulstu.extractor.heuristic.model.EntityUnit;
 
 import java.io.File;
 import java.io.IOException;
@@ -26,7 +27,7 @@ public class StructuralUnitService {
         this.structuralUnitIdentifiers = structuralUnitIdentifiers;
     }
 
-    public List<StructuralUnit> getEntities(File rootPath) throws IOException {
+    public List<EntityUnit> getEntities(File rootPath) throws IOException {
         List<File> projectFiles = directoryService.getFilesRecursively(rootPath);
         List<File> rootProjectFiles = directoryService.getDirectoryFiles(rootPath.toPath());
         return getStructuralUnitIdentifier(
@@ -38,6 +39,18 @@ public class StructuralUnitService {
                 .getEntityClasses(rootPath.getPath(), projectFiles, rootProjectFiles);
     }
 
+    public List<BusinessLogicUnit> getBusinessLogic(File rootPath) throws IOException {
+        List<File> projectFiles = directoryService.getFilesRecursively(rootPath);
+        List<File> rootProjectFiles = directoryService.getDirectoryFiles(rootPath.toPath());
+        return getStructuralUnitIdentifier(
+                structuralUnitIdentifier -> structuralUnitIdentifier.canAppliedToProject(
+                        rootPath.getPath(),
+                        projectFiles,
+                        rootProjectFiles))
+                .orElseThrow(() -> new RuntimeException("Identifier not found"))
+                .getBusinessLogicClasses(rootPath.getPath(), projectFiles, rootProjectFiles);
+    }
+
     public boolean containsEntity(File projectFile) {
         return getStructuralUnitIdentifier(
                 structuralUnitIdentifier -> structuralUnitIdentifier.canAppliedToFile(projectFile))
@@ -57,4 +70,11 @@ public class StructuralUnitService {
                 .filter(predicate)
                 .findAny();
     }
+
+    public boolean containsBusinessLogic(String sourceCode) {
+        return getStructuralUnitIdentifier(
+                structuralUnitIdentifier -> structuralUnitIdentifier.canAppliedToCode(sourceCode))
+                .map(identifier -> identifier.isBusinessLogicClass(sourceCode))
+                .orElse(false);
+    }
 }
diff --git a/src/main/java/ru/ulstu/extractor/model/FileChange.java b/src/main/java/ru/ulstu/extractor/model/FileChange.java
index 2a34ff3..80d1b8f 100644
--- a/src/main/java/ru/ulstu/extractor/model/FileChange.java
+++ b/src/main/java/ru/ulstu/extractor/model/FileChange.java
@@ -27,6 +27,8 @@ public class FileChange extends BaseEntity {
 
     private Boolean containsEntity;
 
+    private Boolean containsBusinessLogic;
+
     @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
     @JoinColumn(name = "file_change_id", unique = true)
     @Fetch(FetchMode.SUBSELECT)
@@ -86,4 +88,20 @@ public class FileChange extends BaseEntity {
     public void setContainsEntity(boolean containsEntity) {
         this.containsEntity = containsEntity;
     }
+
+    public Boolean getContainsEntity() {
+        return containsEntity;
+    }
+
+    public void setContainsEntity(Boolean containsEntity) {
+        this.containsEntity = containsEntity;
+    }
+
+    public Boolean getContainsBusinessLogic() {
+        return containsBusinessLogic;
+    }
+
+    public void setContainsBusinessLogic(Boolean containsBusinessLogic) {
+        this.containsBusinessLogic = containsBusinessLogic;
+    }
 }
diff --git a/src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java b/src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java
index 0cc4f15..de16237 100644
--- a/src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java
+++ b/src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java
@@ -206,6 +206,9 @@ public class GitRepositoryService {
                     fileChange.setContainsEntity(
                             structuralUnitService.containsEntity(getContent(repository, commit, maybeFileName.get()))
                     );
+                    fileChange.setContainsBusinessLogic(
+                            structuralUnitService.containsBusinessLogic(getContent(repository, commit, maybeFileName.get()))
+                    );
                     /// вытащить другие изменения из коммита
                     changes.add(fileChange);
                 }
diff --git a/src/main/resources/db/changelog-20210412_100000-schema.xml b/src/main/resources/db/changelog-20210412_100000-schema.xml
index 38ffdc7..83f9844 100644
--- a/src/main/resources/db/changelog-20210412_100000-schema.xml
+++ b/src/main/resources/db/changelog-20210412_100000-schema.xml
@@ -12,4 +12,9 @@
             <column name="contains_entity" type="boolean"/>
         </addColumn>
     </changeSet>
+    <changeSet author="orion" id="20210419-100000-1">
+        <addColumn tableName="file_change">
+            <column name="contains_business_logic" type="boolean"/>
+        </addColumn>
+    </changeSet>
 </databaseChangeLog>
\ No newline at end of file