📈 #12293 导入 MD 日志输出

src/main/java/org/b3log/solo/service/ImportService.java

@@ -37,7 +37,7 @@ import java.util.*;
  * Import service.
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.0.0.1, Jun 26, 2017
+ * @version 1.0.0.2, Jul 3, 2017
  * @since 2.2.0
  */
 @Service
@@ -91,6 +91,10 @@ public class ImportService {
             int succCnt = 0, failCnt = 0;
             final Set<String> failSet = new TreeSet<>();
             final Collection<File> mds = FileUtils.listFiles(new File(markdownsPath), new String[]{"md"}, true);
+            if (null == mds || mds.isEmpty()) {
+                return;
+            }
+
             for (final File md : mds) {
                 final String fileName = md.getName();
                 if (StringUtils.equalsIgnoreCase(fileName, "README.md")) {
@@ -117,6 +121,10 @@ public class ImportService {
                 }
             }
 
+            if (0 == succCnt && 0 == failCnt) {
+                return;
+            }
+
             final StringBuilder logBuilder = new StringBuilder();
             logBuilder.append("[").append(succCnt).append("] imported, [").append(failCnt).append("] failed");
             if (failCnt > 0) {