feat(database): 支持达梦数据库适配

- 在多个Mapper XML文件中增加对达梦数据库的SQL语句适配
- 为AiCommandRecordMapper.xml中的model字段添加反引号避免关键字冲突
- 为LogMapper.xml、UserMapper.xml和DatabaseMapper.xml添加databaseId属性区分不同数据库
- 新增MybatisConfig配置类用于识别数据库类型并注册VendorDatabaseIdProvider
- pom.xml中引入达梦数据库驱动依赖DmJdbcDriver8
- 完善RoleMapper接口注释明确返回值类型

src/main/java/com/youlai/boot/config/MybatisConfig.java

@@ -7,11 +7,15 @@ import com.baomidou.mybatisplus.extension.plugins.inner.DataPermissionIntercepto
 import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
 import com.youlai.boot.plugin.mybatis.MyDataPermissionHandler;
 import com.youlai.boot.plugin.mybatis.MyMetaObjectHandler;
+import org.apache.ibatis.mapping.DatabaseIdProvider;
+import org.apache.ibatis.mapping.VendorDatabaseIdProvider;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 
+import java.util.Properties;
+
 /**
  * mybatis-plus 配置类
  *
@@ -57,4 +61,17 @@ public class MybatisConfig {
         return globalConfig;
     }
 
+    /**
+     * 数据库类型自动识别
+     */
+    @Bean
+    public DatabaseIdProvider databaseIdProvider() {
+        DatabaseIdProvider databaseIdProvider = new VendorDatabaseIdProvider();
+        Properties properties = new Properties();
+        properties.setProperty("DM", "dm");
+        properties.setProperty("MySQL", "mysql");
+        databaseIdProvider.setProperties(properties);
+        return databaseIdProvider;
+    }
+
 }