修改了类名以及添加了bean和dao接口类

demo/src/test/java/com/example/demo/Dao/transationMapping.java

@@ -4,4 +4,5 @@ import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
 public interface transationMapping {
+
 }

demo/src/test/java/com/example/demo/Dao/usageDateMapping.java

@@ -3,4 +3,5 @@ package com.example.demo.Dao;
 import org.apache.ibatis.annotations.Mapper;
 @Mapper
 public interface usageDateMapping {
+
 }