modelmapper/modelmapper

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2352 stars · 345 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

ModelMapper is a Java library that intelligently maps objects to each other using convention-based matching, automatically determining how one object model maps to another. It provides a type-safe, refactoring-safe fluent API for handling special mapping cases, with integrations for Spring, Guice, Dagger, Jackson, Gson, jOOQ, and more.

Use cases

• map entities to DTOs in a Java application
• convert between similar but differently structured object models
• flatten nested objects into flat DTOs automatically
• avoid writing boilerplate getter/setter mapping code
• map API request/response objects to domain models
• validate that object properties are fully mapped
• integrate object mapping with Spring Boot or jOOQ

When to choose

• you're on the JVM and need automatic convention-based object-to-object mapping
• you want to eliminate manual mapping boilerplate between entities and DTOs
• you need a refactoring-safe, type-safe mapping API with customization hooks
• you want integrations with Spring, Guice, Jackson, Gson, or jOOQ

When to avoid

• you need maximum runtime performance and prefer compile-time code generation like MapStruct
• your mappings are simple enough that hand-written mappers are clearer
• you're not on the JVM

Facets

library · maturity stable

serialization developer-tools developer-tools backend web-development jvm object-mapping dto java convention-based-mapping entity-to-dto

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