feat: 新增顶级增强 Service 类的默认实现类。

mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/ServiceImpl.java

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.mybatisflex.spring.service.impl;
+
+import com.mybatisflex.core.BaseMapper;
+import com.mybatisflex.spring.service.IService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * 由 Mybatis-Flex 提供的顶级增强 Service 接口的默认实现类。
+ *
+ * @author 王帅
+ * @since 2023-05-01
+ * @param <M> 映射类（Mapper）类型
+ * @param <T> 实体类（Entity）类型
+ */
+@SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
+public class ServiceImpl<M extends BaseMapper<T>, T> implements IService<T> {
+
+    @Autowired
+    protected M baseMapper;
+
+    @Override
+    public BaseMapper<T> getBaseMapper() {
+        return baseMapper;
+    }
+
+}