Mapstruct: Check for null for source before mapping to target

Question

Mapstruct: Check for null for source before mapping to target. Require to throw a custom exception from mapstruct interface if the source is null.

Did you try @BeforeMapping? Link: https://mapstruct.org/documentation/stable/api/index.html?org/mapstruct/BeforeMapping.html — Daimon Cool

Filip Filip · Accepted Answer · 2020-06-24T04:59:27

This is currently not supported. However, you can write something like this by using the defaultExpression.

Anyways, I would not suggest using MapStruct for this. Java Bean Validation is better suited for doing this.