diff --git a/src/main/java/cn/hyperchain/sdk/response/filemgr/FileExtraFromFileHashResponse.java b/src/main/java/cn/hyperchain/sdk/response/filemgr/FileExtraFromFileHashResponse.java
index 534e6e96..d7502a69 100644
--- a/src/main/java/cn/hyperchain/sdk/response/filemgr/FileExtraFromFileHashResponse.java
+++ b/src/main/java/cn/hyperchain/sdk/response/filemgr/FileExtraFromFileHashResponse.java
@@ -26,6 +26,19 @@ public FileExtra getFileExtra() {
         return FileExtra.fromJson(extra);
     }
 
+    /**
+     * parse transaction from result.
+     *
+     * @return transaction
+     */
+    public TxResponse.Transaction getTransaction() {
+        List<TxResponse.Transaction> transactions = result.parseResult(TxResponse.Transaction.class);
+        if (transactions.size() == 0) {
+            throw new RuntimeException("can't get any transaction");
+        }
+        return transactions.get(0);
+    }
+
     @Override
     public String toString() {
         return "FileExtraFromFileHashResponse{" +
diff --git a/src/main/java/cn/hyperchain/sdk/service/impl/FileMgrServiceImpl.java b/src/main/java/cn/hyperchain/sdk/service/impl/FileMgrServiceImpl.java
index 0cec947f..df0e2b64 100644
--- a/src/main/java/cn/hyperchain/sdk/service/impl/FileMgrServiceImpl.java
+++ b/src/main/java/cn/hyperchain/sdk/service/impl/FileMgrServiceImpl.java
@@ -110,12 +110,14 @@ public FileUploadResponse fileUpload(String filePath, String description, Accoun
             fileUploadResponse = (FileUploadResponse) fileTransferRequest.send();
         } catch (RequestException e) {
             throw new FileMgrException("File upload failed" + e.getMsg());
+        } finally {
+            try {
+                randomAccessFile.close();
+            } catch (IOException e) {
+                logger.warn("close randomAccessFile failed");
+            }
         }
-        try {
-            randomAccessFile.close();
-        } catch (IOException e) {
-            logger.warn("close randomAccessFile failed");
-        }
+
         fileUploadResponse.setTranRequest(fileTransferRequest);
         fileUploadResponse.setFileHash(fileHash);
         fileUploadResponse.setProviderManager(providerManager);
@@ -191,11 +193,12 @@ public FileUploadResponse fileUpload(FileUploadParams fileParams,int nodeId) thr
             fileUploadResponse = (FileUploadResponse) fileTransferRequest.send();
         } catch (RequestException e) {
             throw new FileMgrException("File upload failed" + e.getMsg());
-        }
-        try {
-            randomAccessFile.close();
-        } catch (IOException e) {
-            logger.warn("close randomAccessFile failed");
+        } finally {
+            try {
+                randomAccessFile.close();
+            } catch (IOException e) {
+                logger.warn("close randomAccessFile failed");
+            }
         }
         fileUploadResponse.setTranRequest(fileTransferRequest);
         fileUploadResponse.setFileHash(fileHash);
@@ -319,22 +322,22 @@ public FileDownloadResponse fileDownload(String filePath, String fileHash, Strin
                 }
             }
             return new FileDownloadResponse(e.getCode(), e.getMsg());
-        }
-
-        try {
-            fileLock.release();
-        } catch (IOException e) {
-            logger.warn("release fileLock failed");
-        }
-        try {
-            channel.close();
-        } catch (IOException e) {
-            logger.warn("close file channel failed");
-        }
-        try {
-            randomAccessFile.close();
-        } catch (IOException e) {
-            logger.warn("close randomAccessFile failed");
+        } finally {
+            try {
+                fileLock.release();
+            } catch (IOException e) {
+                logger.warn("release fileLock failed");
+            }
+            try {
+                channel.close();
+            } catch (IOException e) {
+                logger.warn("close file channel failed");
+            }
+            try {
+                randomAccessFile.close();
+            } catch (IOException e) {
+                logger.warn("close randomAccessFile failed");
+            }
         }
         return fileDownloadResponse;
     }