v3- fix bug

src/main/java/com/june/entitytodbdoc/Starter.java

@@ -5,6 +5,7 @@ import com.june.entitytodbdoc.utils.FileUtils;
 import com.june.entitytodbdoc.utils.GetClassCommentUtils;
 import com.june.entitytodbdoc.utils.MarkdownUtils;
 
+import java.util.Collection;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Optional;
@@ -29,7 +30,8 @@ public class Starter {
                 .map(Optional::get)
                 .distinct()
                 .sorted(Comparator.comparing(DocumentInfoDTO::getDocumentName))
-                .flatMap(dto -> MarkdownUtils.getOneDocumentContent(dto).stream())
+                .map(MarkdownUtils::getOneDocumentContent)
+                .flatMap(Collection::stream)
                 .collect(Collectors.toList());
         String path = "D:\\work\\idea\\june\\entity-to-db-doc\\entity-to-db-doc\\src\\main\\java\\com\\june\\entitytodbdoc\\xx.md";
         FileUtils.writeMarkdown(resultContentList, path);