diff --git a/shandan-basedata/src/main/java/com/keyware/shandan/dynacmicform/controller/DynamicDataController.java b/shandan-basedata/src/main/java/com/keyware/shandan/dynacmicform/controller/DynamicDataController.java
index 8ca08e8..caefba1 100644
--- a/shandan-basedata/src/main/java/com/keyware/shandan/dynacmicform/controller/DynamicDataController.java
+++ b/shandan-basedata/src/main/java/com/keyware/shandan/dynacmicform/controller/DynamicDataController.java
@@ -292,7 +292,9 @@ public class DynamicDataController {
 
         String filePath = System.getProperty("user.home") + File.separator + formInfo.getFormId() + ".xlsx";
         File file = new File(filePath);
-        file.deleteOnExit();
+        if(file.exists()){
+            file.delete();
+        }
         ExcelWriter excelWriter = ExcelUtil.getWriter(file);
         excelWriter.merge(colIds.size() - 1, formInfo.getFormName());
         excelWriter.write(rows, true);
@@ -317,7 +319,9 @@ public class DynamicDataController {
 
         String filePath = System.getProperty("user.home") + File.separator + formInfo.getFormId() + "_template.xlsx";
         File file = new File(filePath);
-        file.deleteOnExit();
+        if(file.exists()){
+            file.delete();
+        }
         ExcelWriter excelWriter = ExcelUtil.getWriter(file);
         excelWriter.merge(colIds.size() - 1, formInfo.getFormName());
         excelWriter.write(rows, true);
diff --git a/shandan-browser/src/main/java/com/keyware/shandan/browser/service/ExportComponent.java b/shandan-browser/src/main/java/com/keyware/shandan/browser/service/ExportComponent.java
index a050198..81272d5 100644
--- a/shandan-browser/src/main/java/com/keyware/shandan/browser/service/ExportComponent.java
+++ b/shandan-browser/src/main/java/com/keyware/shandan/browser/service/ExportComponent.java
@@ -189,7 +189,9 @@ public class ExportComponent {
 
     private void delete(String path) {
         File file = new File(path);
-        file.deleteOnExit();
+        if(file.exists()){
+            file.delete();
+        }
     }
 
     @AllArgsConstructor
diff --git a/shandan-common/src/main/java/com/keyware/shandan/common/util/FileDownload.java b/shandan-common/src/main/java/com/keyware/shandan/common/util/FileDownload.java
index 38b1509..9294f65 100644
--- a/shandan-common/src/main/java/com/keyware/shandan/common/util/FileDownload.java
+++ b/shandan-common/src/main/java/com/keyware/shandan/common/util/FileDownload.java
@@ -81,7 +81,9 @@ public class FileDownload {
             return "下载过程出现错误，文件流读取异常！";
         } finally {
             if (delete) {
-                file.deleteOnExit();
+                if(file.exists()){
+                    file.delete();
+                }
             }
         }
         return "下载完成";
diff --git a/shandan-system/src/main/java/com/keyware/shandan/system/controller/SysFileController.java b/shandan-system/src/main/java/com/keyware/shandan/system/controller/SysFileController.java
index ef4a472..9fba8ff 100644
--- a/shandan-system/src/main/java/com/keyware/shandan/system/controller/SysFileController.java
+++ b/shandan-system/src/main/java/com/keyware/shandan/system/controller/SysFileController.java
@@ -176,7 +176,6 @@ public class SysFileController extends BaseController<SysFileService, SysFile, S
      */
     @PostMapping("/upload/chunk")
     public Result<Object> uploadChunk(MultipartFile file, SysFile fileInfo, SysFileChunk fileChunk) throws Exception {
-        //;
         return Result.of(FileChunkUploadUtil.uploadChunk(file, fileInfo, fileChunk));
 
     }
diff --git a/shandan-system/src/main/java/com/keyware/shandan/system/service/impl/SysFileServiceImpl.java b/shandan-system/src/main/java/com/keyware/shandan/system/service/impl/SysFileServiceImpl.java
index 3f5743a..58e8a45 100644
--- a/shandan-system/src/main/java/com/keyware/shandan/system/service/impl/SysFileServiceImpl.java
+++ b/shandan-system/src/main/java/com/keyware/shandan/system/service/impl/SysFileServiceImpl.java
@@ -234,7 +234,9 @@ public class SysFileServiceImpl extends BaseServiceImpl<SysFileMapper, SysFile,
     @Override
     public void clearFiles() {
         File file = new File(customProperties.getFileStorage().getPath());
-        file.deleteOnExit();
+        if(file.exists()){
+            file.delete();
+        }
     }
 
     @Override
diff --git a/shandan-system/src/main/java/com/keyware/shandan/system/utils/FileChunkUploadUtil.java b/shandan-system/src/main/java/com/keyware/shandan/system/utils/FileChunkUploadUtil.java
index 5d7431c..dfd53f7 100644
--- a/shandan-system/src/main/java/com/keyware/shandan/system/utils/FileChunkUploadUtil.java
+++ b/shandan-system/src/main/java/com/keyware/shandan/system/utils/FileChunkUploadUtil.java
@@ -141,7 +141,9 @@ public class FileChunkUploadUtil {
         public void uploadChunk(MultipartFile uploadFile, SysFileChunk chunk) throws IOException {
             if (!chunksCache.containsKey(chunk.getChunkMd5())) {
                 File chunkFile = new File(chunkFIleStorePath + File.separator + chunk.getChunkMd5() + ".chunk");
-                chunkFile.deleteOnExit();
+                if(chunkFile.exists()){
+                    chunkFile.delete();
+                }
                 uploadFile.transferTo(chunkFile);
                 chunk.setChunkPath(chunkFile.getAbsolutePath());
                 chunksCache.put(chunk.getChunkMd5(), chunk);
@@ -161,18 +163,20 @@ public class FileChunkUploadUtil {
             if (!parent.exists()) {
                 parent.mkdirs();
             }
-            targetFile.deleteOnExit();
-            targetFile.createNewFile();
+            if(targetFile.exists()){
+                targetFile.delete();
+                targetFile.createNewFile();
+            }
 
 
             List<SysFileChunk> chunks = new ArrayList<>(chunksCache.values());
             chunks.sort((o1, o2) -> (int) (o1.getChunkIndex() - o2.getChunkIndex()));
-            FileOutputStream outputStream = new FileOutputStream(targetFile, true);
-            for (SysFileChunk chunk : chunks) {
-                File chunkFile = new File(chunk.getChunkPath());
-                FileUtils.copyFile(chunkFile, outputStream);
+            try (FileOutputStream outputStream = new FileOutputStream(targetFile, true)) {
+                for (SysFileChunk chunk : chunks) {
+                    File chunkFile = new File(chunk.getChunkPath());
+                    FileUtils.copyFile(chunkFile, outputStream);
+                }
             }
-            outputStream.close();
 
             // 删除分片缓存文件，该方法为递归删除
             FileUtil.del(chunkFIleStorePath);