1、

Invalid bound statement (not found): com.lion.mapper.OrdersMapperCustom.findUserItems

原因 ：select中的id和對應介面中的名稱不匹配導致的。
解決：id名與方法名一致

錯誤：
<select id="findUserItem" resultMap="ItemResultMap">
public List<User> findUserItems()throws Exception;
正確：
<select id="findUserItems" resultMap="ItemResultMap"
 
>
public List<User> findUserItems()throws Exception;

2、

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/lion/mapper/OrdersMapperCustom.xml
### The error occurred while processing mapper_resultMap[OrdersAndOrderDetailResultMap]_collection[orderdetails]
 

org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:66)
    at com.lion.Test.main.main(main.java:24)
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error
 
 resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'OrdersAndOrderDetailResultMap'.  Cause: java.lang.ClassNotFoundException: Cannot find class: OrdersAndOrderDetailResultMap
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:109)
    at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:92)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80)
    ... 2 more
Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'OrdersAndOrderDetailResultMap'.  Cause: java.lang.ClassNotFoundException: Cannot find class: OrdersAndOrderDetailResultMap
這個錯誤原因是 resultMap 寫成了 resultType的問題  一定要注意 ，，，自習觀察

原因：這個錯誤原因是 resultMap 寫成了 resultType的問題
解決：將出錯的select標籤中的resultType改成resultMap即可

錯誤：
<select id="findOrdersAndOrderDetailResultMap" resultType="OrdersAndOrderDetailResultMap">
正確：
<resultMap type="com.lion.po.Orders" id="OrdersAndOrderDetailResultMap">
...
</resultMap>

<select id="findOrdersAndOrderDetailResultMap" resultMap="OrdersAndOrderDetailResultMap">