后端：增加 cart 系统

cart/cart-service-impl/src/main/resources/mybatis-config.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
+<configuration>
+
+    <settings>
+        <!-- 使用驼峰命名法转换字段。 -->
+        <setting name="mapUnderscoreToCamelCase" value="true"/>
+    </settings>
+
+    <typeAliases>
+        <typeAlias alias="Integer" type="java.lang.Integer"/>
+        <typeAlias alias="Long" type="java.lang.Long"/>
+        <typeAlias alias="HashMap" type="java.util.HashMap"/>
+        <typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap"/>
+        <typeAlias alias="ArrayList" type="java.util.ArrayList"/>
+        <typeAlias alias="LinkedList" type="java.util.LinkedList"/>
+    </typeAliases>
+
+</configuration>