common/pom.xml

@@ -17,4 +17,10 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
+    <dependencies>
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
+        </dependency>
+    </dependencies>
 </project>

common/src/main/java/net/rzdata/demo/trait/BaseRepository.java

@@ -0,0 +1,16 @@
+package net.rzdata.demo.trait;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+
+public abstract class BaseRepository<T, M extends BaseMapper<T>> {
+
+    private final transient M mapper;
+
+    public BaseRepository(M mapper) {
+        this.mapper = mapper;
+    }
+
+    public M get() {
+        return this.mapper;
+    }
+}