diff --git a/pom.xml b/pom.xml
index 0592ece..f7d4a06 100644
--- a/pom.xml
+++ b/pom.xml
@@ -132,6 +132,11 @@
             <artifactId>mybatis-spring-boot-starter</artifactId>
             <version>3.0.2</version>
         </dependency>
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>2.1</version>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/com/cmhi/gds/common/ErrorCode.java b/src/main/java/com/cmhi/gds/common/ErrorCode.java
index fcb1417..80e3b9e 100644
--- a/src/main/java/com/cmhi/gds/common/ErrorCode.java
+++ b/src/main/java/com/cmhi/gds/common/ErrorCode.java
@@ -334,31 +334,16 @@ public enum ErrorCode implements BaseEnum {
      * @return the http code
      */
     public int getHttpCode() {
-        switch (this) {
-            case ERR_OK:
-                return HttpServletResponse.SC_OK;
-            case ERR_SYSTEMEXCEPTION:
-            case ERR_PARAMEXCEPTION:
-                return HttpServletResponse.SC_EXPECTATION_FAILED;
-            case ERR_TOKENTIMEOUT:
-            case ERR_REQTIMEOUT:
-                return HttpServletResponse.SC_REQUEST_TIMEOUT;
-            case ERR_UNTRUSTTOKEN:
-            case ERR_UNTRUSTHOST:
-            case ERR_LOGOUT:
-                return HttpServletResponse.SC_UNAUTHORIZED;
-            case ERR_MISSAUTHHEAD:
-            case ERR_PARAMS:
-            case ERR_INPUTFORMAT:
-            case ERR_INPUTMISS:
-                return HttpServletResponse.SC_BAD_REQUEST;
-            case ERR_UNSUPPORT:
-                return HttpServletResponse.SC_METHOD_NOT_ALLOWED;
-            case ERR_UNKNOWNINTERFACE:
-                return HttpServletResponse.SC_NOT_FOUND;
-            default:
-                return HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
-        }
+        return switch (this) {
+            case ERR_OK -> HttpServletResponse.SC_OK;
+            case ERR_SYSTEMEXCEPTION, ERR_PARAMEXCEPTION -> HttpServletResponse.SC_EXPECTATION_FAILED;
+            case ERR_TOKENTIMEOUT, ERR_REQTIMEOUT -> HttpServletResponse.SC_REQUEST_TIMEOUT;
+            case ERR_UNTRUSTTOKEN, ERR_UNTRUSTHOST, ERR_LOGOUT -> HttpServletResponse.SC_UNAUTHORIZED;
+            case ERR_MISSAUTHHEAD, ERR_PARAMS, ERR_INPUTFORMAT, ERR_INPUTMISS -> HttpServletResponse.SC_BAD_REQUEST;
+            case ERR_UNSUPPORT -> HttpServletResponse.SC_METHOD_NOT_ALLOWED;
+            case ERR_UNKNOWNINTERFACE -> HttpServletResponse.SC_NOT_FOUND;
+            default -> HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
+        };
     }
 
     /**
diff --git a/src/main/java/com/cmhi/gds/exception/GlobalExceptionHandler.java b/src/main/java/com/cmhi/gds/exception/GlobalExceptionHandler.java
index 4171558..2669cf9 100644
--- a/src/main/java/com/cmhi/gds/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/cmhi/gds/exception/GlobalExceptionHandler.java
@@ -66,9 +66,10 @@ public class GlobalExceptionHandler {
             }
             sb.append("]");
 
-            log.error("Interface [{}] request <{}> from {}, token = <{}>\n" +
-                            "+++ Request: {}\n" +
-                            "--- Verify params failed: {}",
+            log.error("""
+                            Interface [{}] request <{}> from {}, token = <{}>
+                            +++ Request: {}
+                            --- Verify params failed: {}""",
                     reqType, reqPath, reqIp, reqToken, Helper.inputStream2String(req.getInputStream()), sb);
         } catch (Exception ignored) {
         }
@@ -112,9 +113,10 @@ public class GlobalExceptionHandler {
             if (reqToken != null && !reqToken.isEmpty()) {
                 reqToken = reqToken.replace(ConstValue.STRING_HTTP_AUTH_HEAD, "");
             }
-            log.error("Interface [{}] request <{}> from {}, token = <{}>\n" +
-                            "+++ Request: {}\n" +
-                            "--- Verify params failed: {}",
+            log.error("""
+                            Interface [{}] request <{}> from {}, token = <{}>
+                            +++ Request: {}
+                            --- Verify params failed: {}""",
                     reqType, reqPath, reqIp, reqToken, Helper.inputStream2String(req.getInputStream()),
                     ex.getMessage() == null ? ex.getDescription() : ex.getMessage());
         } catch (Exception ignored) {
@@ -161,9 +163,10 @@ public class GlobalExceptionHandler {
             if (reqToken != null && !reqToken.isEmpty()) {
                 reqToken = reqToken.replace(ConstValue.STRING_HTTP_AUTH_HEAD, "");
             }
-            log.error("Interface [{}] request <{}> from {}, token = <{}>\n" +
-                            "+++ Request: {}\n" +
-                            "--- Verify params failed: {}",
+            log.error("""
+                            Interface [{}] request <{}> from {}, token = <{}>
+                            +++ Request: {}
+                            --- Verify params failed: {}""",
                     reqType, reqPath, reqIp, reqToken, Helper.inputStream2String(req.getInputStream()),
                     ex.getMessage());
         } catch (Exception ignored) {
@@ -202,7 +205,7 @@ public class GlobalExceptionHandler {
             errMeg.add(ErrorCode.ERR_PARAMEXCEPTION.getMsg());
         }
 
-        if (ex.getMessage() != null && ex.getMessage().length() > 0) {
+        if (ex.getMessage() != null && !ex.getMessage().isEmpty()) {
             errMeg.add(ex.getMessage());
         }
 
diff --git a/src/main/java/com/cmhi/gds/manager/GameDatabaseServiceManager.java b/src/main/java/com/cmhi/gds/manager/GameDatabaseServiceManager.java
index a2e03dd..90b9376 100644
--- a/src/main/java/com/cmhi/gds/manager/GameDatabaseServiceManager.java
+++ b/src/main/java/com/cmhi/gds/manager/GameDatabaseServiceManager.java
@@ -1,7 +1,5 @@
 package com.cmhi.gds.manager;
 
-import com.cmhi.gds.pojo.entry.GameInfo;
-import com.cmhi.gds.pojo.entry.GameTable;
 import com.cmhi.gds.pojo.entry.GameTableSummary;
 
 import java.util.List;
diff --git a/src/main/java/com/cmhi/gds/pojo/dto/protocol/info/GameListSummary.java b/src/main/java/com/cmhi/gds/pojo/dto/protocol/info/GameListSummary.java
index 6a1de1b..c7f0be7 100644
--- a/src/main/java/com/cmhi/gds/pojo/dto/protocol/info/GameListSummary.java
+++ b/src/main/java/com/cmhi/gds/pojo/dto/protocol/info/GameListSummary.java
@@ -1,6 +1,5 @@
 package com.cmhi.gds.pojo.dto.protocol.info;
 
-import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import lombok.AllArgsConstructor;
 import lombok.Builder;