Struts to Spring Boot Migration Services for Legacy Java Modernization

Apache Struts limits Java upgrades, increases long-term security risk, and slows API expansion. Legacyleap is a GenAI-powered platform that orchestrates the complete migration from Struts to Spring Boot, up to 50-70% faster with full behavior parity validation.

Unleash Unmatched Modernization Velocity with Legacyleap

Legacyleap sets new benchmarks for application modernization initiatives using Gen AI

2-5 days

to assess and document the entire legacy application

~70 %

modernization automated by Gen AI

2x

Faster modernization timelines vs. vendors or in-house

100%

functional parity, validated and compliant

PLATFORM

A GenAI-Powered Modernization Platform for Struts to Spring Boot Migration

Legacyleap is an enterprise modernization platform that compresses evaluation, planning, execution, and validation for Apache Struts to Spring Boot migration using coordinated agents across every phase.

Assessment Agent

Understand legacy Struts app risk, scope, and effort upfront

Generates a structural profile of your Struts application, identifying runtime dependencies, Java 17 and Jakarta compatibility gaps, and modernization constraints within 2-3 days.

Technical debt analysis

Architecture drift across Struts layers

Security vulnerabilities

Modernization hotspots

Migration effort and timeline estimate

Documentation Agent

Reconstruct system behavior from Struts code

Produces accurate documentation directly from Struts code and configuration, including action flows, JSP linkages, servlet routing, and integration points.

Complete system inventory (SBOM)

Action-to-service flow maps

API specifications

PRDs, BRDs, FSDs

Integration maps

Recommendation agent

Determine the right Struts migration path

Delivers a runtime-aware modernization plan, showing whether your system fits incremental strangler migration, runtime stabilization first, module phased refactor, or a targeted Spring Boot 3 rewrite.

Complete system inventory (SBOM)

API specifications

PRDs, BRDs, FSDs

Integration maps

Migration Agent

Convert Struts code in controlled stages

Executes the approved modernization plan incrementally, restructuring Struts Actions into Spring Boot conventions, resolving Spring Boot 3 and Jakarta transition gaps, and aligning APIs for future extensibility.

Converted and refactored code

Gap reports

Actionable to-do lists

Pull requests

Automated PR review

QA & Validation Agent

Validate Struts migration with functional parity

Verifies functional and behavior parity with the original system, generating test cases, regression reports, and output validation to ensure production continuity.

Unit test cases

Regression test cases

Integration test cases

API test cases

$0 Assessment

Test Legacyleap on Your Legacy Delphi Codebase for $0

Run a real assessment on one Delphi application and see how Legacyleap works before committing to a migration.

We analyze your Delphi codebase and deliver export-ready artifacts that teams typically spend months assembling manually.

We’ve completed 150+ production-grade assessments to help teams determine whether Legacyleap is the right fit before committing.

Migration Paths

Struts to Spring Boot Migration Paths Supported by Legacyleap

Every Struts application carries different levels of coupling, UI dependency, and architectural debt. Legacyleap evaluates the codebase and executes the appropriate migration path end to end.

Legacy Struts Application

Struts to Spring Boot Migration

For enterprise systems requiring full legacy Java modernization and long-term platform alignment.

This path is suited for large Apache Struts applications that must:

Adopt Java 17 and Spring Boot 3

Align with Jakarta EE standards

Improve testability and modular layering

Enable container-ready deployment

Legacyleap consolidates configuration, restructures controller logic, and modernizes runtime behavior to deliver a fully aligned Spring Boot architecture.

Ideal for enterprise modernization programs where long-term maintainability and upgrade velocity are priorities.

Struts to Spring MVC Migration

For Struts applications where the core architecture remains viable but the framework itself limits flexibility.

This approach:

Preserves existing application structure

Replaces Struts controllers with Spring MVC

Reduces migration surface area

Minimizes refactoring overhead

Suitable for phased modernization where risk reduction and runtime stability are critical.

Struts to REST API Modernization

For legacy Struts systems where UI and backend logic must be decoupled to enable frontend evolution.

This path:

Extracts business logic into RESTful services

Separates presentation from application core

Enables future frontend modernization (React, Angular, etc.)

Improves API reuse and integration scalability

It is often the first step toward service-oriented or microservice-ready architecture.

Is Legacyleap Right for Me?

Choose between full-service delivery or platform access, both built to get you to production faster and safer.

You bring the system. We bring the outcome.

Turnkey Modernization Services

We take full ownership from start to finish, combining engineering expertise with platform accountability.

Leverage your internal or SI teams with our platform.

Platform Licensing

Deploy Legacyleap within your environment and modernize at your own pace, with full control, tools, and support.

Technical Demo

Book a Live Technical Demo of Legacyleap

This session is led by the CTO and goes deep into how Legacyleap was designed to analyze legacy code, makes migration decisions, execute conversion, and validate outcomes across real applications.

How a legacy codebase is analyzed for structure, dependencies, and risk

How documentation, architecture maps, and system inventories are generated

How migration paths to C#, .NET, or React are determined

How code conversion is executed incrementally with pull requests

How functional parity is validated before production rollout

Frequently Asked Questions

Didn't find what you were looking for?

Is Delphi really considered legacy in enterprise systems?

Yes. Delphi is still running in many enterprises, but its ecosystem, tooling, and hiring pool have stagnated. Most Delphi systems become “legacy” not because they stop working, but because they block UI modernization, integration, and long-term maintainability. Legacyleap is built to modernize these systems without discarding their proven logic.

What does Legacyleap do for Delphi to C# and .NET migration?

Legacyleap modernizes Delphi applications by analyzing Pascal code, UI logic, data access layers, and dependencies, then converting them into C# and modern .NET architectures. The platform separates assessment, planning, conversion, and validation so legacy behavior is preserved while the system is modernized.

How does Legacyleap migrate Delphi applications to React?

Legacyleap separates UI logic from business logic inside Delphi systems first. Business behavior is modernized into .NET services, while the frontend is rebuilt in React. This allows modern web interfaces without reimplementing existing workflows or rules.

Can Legacyleap handle large enterprise Delphi applications?

Yes. Legacyleap has been used on enterprise-scale Delphi systems with large codebases, multiple integrations, and long operational histories. The platform is built to handle complexity without requiring full system rewrites.

How does Legacyleap differ from traditional Delphi migration services?

Traditional migration services rely heavily on manual discovery and rewriting. Legacyleap uses an agentic GenAI platform to automate assessment, documentation, planning, conversion, and validation, reducing timelines while preserving behavior