优化上一页，下一页

PAS/src/main/java/cn/cslg/pas/service/FileManagerService.java

@@ -66,7 +66,13 @@ public class FileManagerService {
                 .url(FMSUrl + "/fileManager/uploadSystemFile")
                 .post(requestBody)
                 .build();
-        return Objects.requireNonNull(okHttpClient.newCall(request).execute().body()).string();
+        Response response = null;
+        response = okHttpClient.newCall(request).execute();
+        // 最后记得删除临时文件
+        for (File file : files) {
+            FileUtils.deleteQuietly(file);
+        }
+        return Objects.requireNonNull(response.body()).string();
     }
 
     /**