I have MyBatis v=3.4.5 and plugin MyBatis Generator v=1.3.7 for Eclipse IDE.
After i run generate in my .xml mappers all symbols > < was changed see image

I found that it was normal for xml mappers but why it was happened and how to fix this symbols ?
                        
Not sure what your question is but in XML some characters cannot be placed in a CDATA section (the text you see in the body of the tags).
For example, to include a
<it must be encoded as the "XML entity"<. Otherwise it could be confused for a tag. Other characters also need to be encoded. Therefore:<must be encoded as<.&must be encoded as&.>can be encoded as>. This is your case.'(single quote) can be encoded as'."(double quote) can be encoded as".This is expected since
<and&are illegal in plain form in the body tags.