Update pom.xml for MyBatis Plus integration and downgrade Spring Boot version; refactor validation imports from Jakarta to Javax; modify mappers to extend BaseMapper for CRUD operations; clean up unused MyBatis-Flex mappers; adjust application.yml for MyBatis Plus configuration.

src/main/resources/application.yml

@@ -12,11 +12,18 @@ spring:
       minimum-idle: 2
       connection-timeout: 30000
 
-mybatis:
+mybatis-plus:
   mapper-locations: classpath:mapper/**/*.xml
-  type-aliases-package: com.gameplatform.server.model
+  type-aliases-package: com.gameplatform.server.model.entity
   configuration:
     map-underscore-to-camel-case: true
+    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+  global-config:
+    db-config:
+      id-type: auto
+      logic-delete-field: deleted
+      logic-delete-value: 1
+      logic-not-delete-value: 0
 
 server:
   port: 18080
@@ -31,7 +38,7 @@ logging:
   level:
     root: info
     com.gameplatform.server: debug
-    org.mybatis: debug
+    com.baomidou.mybatisplus: debug
     org.apache.ibatis: debug
     com.zaxxer.hikari: info