Mybatis the data encapsulation class in the mapping file uses the inner class

In general applications, the ORM will be used to map the database isolated records as an entity class, the entity class we are generally a class written in a class file, but sometimes we will use the internal class, this time mapping file configuration should be noted:

If the class is:

Com.xxx.entity.DataWrapper.InnerEntity

Innerentity as a public static member of Datawrapper, the declaration is as follows

1.

Import com.xxx.entity;

...

Datawrapper.innerentity myObject = null;

2.

Com.xxx.entity.DataWrapper.InnerEntity myObject = null;

In mybatis like above as ReturnType or Paramtype will appear ClassNotFound exception, which is related to his classloader mechanism, the above class Javac compiled inner class result is Datawrapper$ Innerentity.class file.

Therefore, when configuring the mapping file, change com.xxx.entity.DataWrapper.InnerEntity to Com.xxx.entity.DataWrapper$innerentity, So the mybatis can be loaded normally.

Mybatis the data encapsulation class in the mapping file uses the inner class