MapStruct: Java bean mappings

Mar 21, 2024#Java #MapStruct18

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In Java, the process of mapping properties from a source bean to a target bean can be done more efficiently and accurately using automatic conversion, known as mapping. MapStruct is a popular bean mapping solution in Java. Installation and usage information can be found on the MapStruct website. Common issues, such as compatibility with Project Lombok, are addressed in the FAQ section. More information can be found on the MapStruct website.

Background#

In Java, the process of "source bean -> target bean" is often manually creating an instance of the target bean, and then assigning the property values from the source bean to the target bean according to the situation. This is not only inefficient but also error-prone, because many times the differences between VO, DTO, and Entity are small, so it is best to use automatic conversion, professionally called mapping.

In Java, the most popular bean mapping solution is MapStruct, let's see how to use it.

Dependency Installation#

Reference: https://mapstruct.org/documentation/installation

How to Use#

Reference: https://mapstruct.org

FAQ#

The most common issue I encounter is that when using MapStruct and Project Lombok together, compilation fails, see: Can I use MapStruct together with Project Lombok?

More common issue solutions: https://mapstruct.org/faq

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