diff --git a/src/main/java/com/fanruan/fs/s3/repository/core/S3ResourceRepository.java b/src/main/java/com/fanruan/fs/s3/repository/core/S3ResourceRepository.java
index 9c18ead..341bd25 100644
--- a/src/main/java/com/fanruan/fs/s3/repository/core/S3ResourceRepository.java
+++ b/src/main/java/com/fanruan/fs/s3/repository/core/S3ResourceRepository.java
@@ -19,7 +19,6 @@ import com.fanruan.api.util.StringKit;
 import com.fr.io.repository.FineFileEntry;
 import com.fr.io.repository.base.BaseResourceRepository;
 import com.fr.stable.Filter;
-import com.fr.stable.StringUtils;
 import com.fr.workspace.resource.ResourceIOException;
 
 import java.io.ByteArrayInputStream;
@@ -58,11 +57,9 @@ public class S3ResourceRepository extends BaseResourceRepository {
 
     @Override
     public FineFileEntry getEntry(String path) {
-        GetObjectRequest request = new GetObjectRequest(bucket, path);
         try {
-            try (S3Object s3Object = s3.getObject(request)) {
-                return s3Object2FileEntry(s3Object, path);
-            }
+            ObjectMetadata metadata = s3.getObjectMetadata(bucket, path);
+            return s3Object2FileEntry(metadata, path);
         } catch (Exception e) {
             LogKit.info("{} not exist!", path);
         }
@@ -225,7 +222,7 @@ public class S3ResourceRepository extends BaseResourceRepository {
         for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
 
             String key = objectSummary.getKey();
-            if (StringUtils.equals(key, dir)) {
+            if (StringKit.equals(key, dir)) {
                 continue;
             }
             String[] arr = key.split(DELIMITER);
@@ -291,14 +288,8 @@ public class S3ResourceRepository extends BaseResourceRepository {
     @Override
     public long length(String path) {
         try {
-            S3Object s3Object = s3.getObject(bucket, path);
-            if (s3Object != null) {
-                try {
-                    return s3Object.getObjectMetadata().getContentLength();
-                } finally {
-                    s3Object.close();
-                }
-            }
+            ObjectMetadata metadata = s3.getObjectMetadata(bucket, path);
+            return metadata.getContentLength();
         } catch (Exception e) {
             LogKit.info("{} not exist!", path);
         }
@@ -342,17 +333,17 @@ public class S3ResourceRepository extends BaseResourceRepository {
 
     private FineFileEntry s3Object2FileEntry(S3ObjectSummary s3Object, String path) {
         FineFileEntry entry = new FineFileEntry(path);
-        entry.setDirectory(s3Object.getKey().endsWith("/"));
+        entry.setDirectory(s3Object.getKey().endsWith(DELIMITER));
         entry.setSize(s3Object.getSize());
         entry.setTimestamp(s3Object.getLastModified().getTime());
         return entry;
     }
 
-    private FineFileEntry s3Object2FileEntry(S3Object s3Object, String path) {
+    private FineFileEntry s3Object2FileEntry(ObjectMetadata metadata, String path) {
         FineFileEntry entry = new FineFileEntry(path);
-        entry.setDirectory(s3Object.getKey().endsWith("/"));
-        entry.setSize(s3Object.getObjectMetadata().getContentLength());
-        entry.setTimestamp(s3Object.getObjectMetadata().getLastModified().getTime());
+        entry.setDirectory(path.endsWith(DELIMITER));
+        entry.setSize(metadata.getContentLength());
+        entry.setTimestamp(metadata.getLastModified().getTime());
         return entry;
     }