Pull request #804: REPORT-112857 fix: 改下isDir的写法

Merge in PG/plugin-repository-s3 from ~AFLY/plugin-repository-s3:release/11.0 to release/11.0

* commit 'f0809bb51642a2f61e16d3b89fb1558525c585b0':
  REPORT-112857 fix: 改下isDir的写法
  REPORT-112857 fix: 改下isDir的写法

src/main/java/com/fanruan/fs/s3/repository/core/S3ResourceRepository.java

@@ -412,16 +412,11 @@ public class S3ResourceRepository extends BaseResourceRepository {
 
     @Override
     public boolean isDirectory(String path) {
-        if (path.endsWith(DELIMITER)) {
-            return exist(path);
+        if (!path.endsWith(DELIMITER) && fileExist(path)) {
+            //是文件
+            return false;
         } else {
-            ObjectListing listing = s3.listObjects(bucket, path);
-            List<S3ObjectSummary> objectSummaries = listing.getObjectSummaries();
-            if (objectSummaries.isEmpty()) {
-                return false;
-            }
-            String dirFormat = path + DELIMITER;
-            return objectSummaries.stream().anyMatch(s3ObjectSummary -> StringUtils.equals(s3ObjectSummary.getKey(), dirFormat));
+            return dirExist(path) || isParentPathAbsent(path);
         }
     }