fix 修复 mapper.lambda 链式调用无法走 @DS 直接切换数据源问题

ruoyi-common/ruoyi-common-mybatis/src/main/java/org/dromara/common/mybatis/core/mapper/BaseMapperPlus.java

@@ -6,7 +6,9 @@ import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.core.metadata.MapperProxyMetadata;
 import com.baomidou.mybatisplus.core.toolkit.reflect.GenericTypeUtils;
+import com.baomidou.mybatisplus.core.toolkit.MybatisUtils;
 import com.baomidou.mybatisplus.extension.conditions.update.LambdaUpdateChainWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.toolkit.ChainWrappers;
@@ -14,6 +16,7 @@ import com.baomidou.mybatisplus.extension.toolkit.Db;
 import org.apache.ibatis.logging.Log;
 import org.apache.ibatis.logging.LogFactory;
 import org.dromara.common.core.utils.MapstructUtils;
+import org.dromara.common.core.utils.SpringUtils;
 import org.dromara.common.core.utils.StreamUtils;
 
 import java.io.Serializable;
@@ -100,7 +103,26 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
      * @return Lambda CRUD 链式包装器
      */
     default LambdaCrudChainWrapper<T, V> lambda() {
-        return new LambdaCrudChainWrapper<>(this);
+        return new LambdaCrudChainWrapper<>(mapperProxy());
+    }
+
+    /**
+     * 获取当前 Mapper 对应的 Spring 代理对象，确保 Mapper 上的切面注解能够继续生效。
+     *
+     * @return Mapper 代理对象
+     */
+    private BaseMapperPlus<T, V> mapperProxy() {
+        BaseMapperPlus<T, V> mapper = this;
+        try {
+            MapperProxyMetadata metadata = MybatisUtils.getMapperProxy(this);
+            Object proxy = SpringUtils.getBean(metadata.getMapperInterface());
+            if (proxy instanceof BaseMapperPlus<?, ?>) {
+                mapper = (BaseMapperPlus<T, V>) proxy;
+            }
+        } catch (RuntimeException ignored) {
+            // Mapper 可能未托管于 Spring 容器，保留当前对象作为回退。
+        }
+        return mapper;
     }
 
     /**
@@ -109,7 +131,7 @@ public interface BaseMapperPlus<T, V> extends BaseMapper<T> {
      * @return Lambda 链式更新包装器
      */
     default LambdaUpdateChainWrapper<T> lambdaUpdate() {
-        return ChainWrappers.lambdaUpdateChain(this);
+        return ChainWrappers.lambdaUpdateChain(mapperProxy());
     }
 
     /**