diff --git a/backend/demo/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/backend/demo/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index cf06b61..3da4c86 100644
--- a/backend/demo/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/backend/demo/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -1,5 +1,12 @@
-{"properties": [{
-  "name": "file.upload-dir",
-  "type": "java.lang.String",
-  "description": "Torrent dir for uploading'"
-}]}
\ No newline at end of file
+{"properties": [
+  {
+    "name": "file.upload-dir",
+    "type": "java.lang.String",
+    "description": "Torrent dir for uploading'"
+  },
+  {
+    "name": "app.torrent.download-dir",
+    "type": "java.lang.String",
+    "description": "A description for 'app.torrent.download-dir'"
+  }
+]}
\ No newline at end of file
diff --git a/backend/demo/src/main/resources/application.properties b/backend/demo/src/main/resources/application.properties
index 9bbb45b..720d673 100644
--- a/backend/demo/src/main/resources/application.properties
+++ b/backend/demo/src/main/resources/application.properties
@@ -1,15 +1,21 @@
 # ========== 数据源 ==========
-spring.datasource.url=jdbc:mysql://mysql:3306/mydatabase?serverTimezone=Asia/Shanghai&createDatabaseIfNotExist=TRUE&useSSL=FALSE&allowPublicKeyRetrieval=TRUE
+spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase?serverTimezone=Asia/Shanghai&useSSL=false&allowPublicKeyRetrieval=true
 spring.datasource.username=myuser
 spring.datasource.password=secret
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
 # ========== JWT 配置 ==========
-jwt.secret=YourJWTSecretKeyHere1234567890
+jwt.secret=YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=
 jwt.expirationMs=3600000
 
 # ========== 日志输出（可选） ==========
 logging.level.org.springframework.security=DEBUG
+logging.level.root=INFO
+logging.level.org.springframework.web=DEBUG
+logging.level.org.springframework.web.servlet=DEBUG
+logging.level.com.example=DEBUG
 
 file.upload-dir=./torrents
-
+app.torrent.download-dir=downloads
+spring.docker.compose.enabled=false
+spring.web.resources.static-locations=file:downloads/
\ No newline at end of file
diff --git a/backend/demo/src/main/resources/lib b/backend/demo/src/main/resources/lib
new file mode 160000
index 0000000..ed28512
--- /dev/null
+++ b/backend/demo/src/main/resources/lib
@@ -0,0 +1 @@
+Subproject commit ed28512530673c7363ae21f6fa09543955963de8