Mybatis: IllegalArgumentException: Mapped Statements collection does not contain value for xxx - spring-boot

Question

I have two entities Vendor and Goods with one-to-many relation, the relation looks like:
I am using mybatis with annotation, the mapper:
GoodsMapper
public interface GoodsMapper {
#Select("select * from goods where id=#{goodsId}")
#Results({
#Result(id = true, column = "id", property = "id"),
#Result(column = "name", property = "name"),
#Result(column = "vendor_id", property = "vendor",
one = #One(select = "com.xxx.server.mapper.VendorMapper.getVendor"))
})
Goods getGoods(#Param("goodsId") String goodsId);
}
VendorMapper
public interface VendorMapper {
#Select("select * from vendor where id=#{vendorId}")
Vendor getVendor(#Param("vendorId") String vendorId);
}
ignore the entity code & others...
when I invoked goodsMapper.getGoods(goodsId), I caught the following exception :
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.xxx.server.mapper.VendorMapper.getVendor
### The error may exist in com/xxx/server/mapper/GoodsMapper.java (best guess)
### The error may involve com.xxx.server.mapper.GoodsMapper.getGoods
### The error occurred while handling results
### SQL: select * from goods where id=?
### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.xxx.server.mapper.VendorMapper.getVendor
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
... 117 more
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.xxx.server.mapper.VendorMapper.getVendor
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:933)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:726)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:719)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getNestedQueryMappingValue(DefaultResultSetHandler.java:740)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getPropertyMappingValue(DefaultResultSetHandler.java:465)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyPropertyMappings(DefaultResultSetHandler.java:441)
I have checked the class path com.xxx.server.mapper.VendorMapper.getVendor for the select of #One, it is correct.
Appreciate any kind help~

Answer 1

In my case this was caused by referenced collection not being initialized by Spring yet.
Solution is to add #DependsOn annotation to the "parent" mapper.
#DependsOn("VendorMapper")
public interface GoodsMapper{
...
}
#Repository("VendorMapper")
public interface VendorMapper {
...
}