我有两个表，一个user表 一个userLayer表,User对象中包含一个UserLayer对象.
但是mybatis单元测试的时候启动加载配置一直报错。下面是部分代码，麻烦大家帮忙看看
1.这是user对象，里面包含UserLayer对象
public class User {
private Integer id;
private UserLayer layerId;
2，UserMapper.xml是工具自动生成的什么都没改，以下是报错信息
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalStateException: No typehandler found for property layerId
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92)
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:466)
... 43 more
Caused by: java.lang.IllegalStateException: No typehandler found for property layerId
at org.apache.ibatis.mapping.ResultMapping$Builder.validate(ResultMapping.java:151)
at org.apache.ibatis.mapping.ResultMapping$Builder.build(ResultMapping.java:140)
at org.apache.ibatis.builder.MapperBuilderAssistant.buildResultMapping(MapperBuilderAssistant.java:394)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildResultMappingFromContext(XMLMapperBuilder.java:378)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:280)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244)
at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116)
... 45 more
