How To Map One Object into Another In Spring Boot Application

In this article, we will learn how to Map one Object into another using ModelMapper library that simplifies the object mapping process and provides a lots of flexibility in customizing the mapping behavior's and remove the boiler plate code to map data between two objects with different structures.

Okay Lets see in the code, How to use ModelMapper library to map one Object into another.

Okay first we will create One spring boot application. https://start.spring.io/

Okay , Lets create one rest endpoint with @PostMapping inside UserController class.

UserController.java

Without ModelMapper, if we want to convert one object into another . we need to write boiler plate code with lots of lines. In this example our request model have only three properties, if request model have 20+ properties then this code will become longer.

UserRequest.java

Here we are using service layer to convert one object into another . so here we can see we need to write…