danvega/jev-spring-boot-starter
User repository on GitHub
A simple Spring Boot 4 starter for TypeSafe Jev using Spring MVC and RestClient
- Forks
- 3
- Last pushed
- Updated Sep 2026
Repo stats from the GitHub API, cached Oct 2026.
CommunityJev Demos & Experiments
Jev Spring Boot Starter
Community Spring Boot starter that injects a JevClient into Spring MVC apps to ask typed noul, choice, and score questions against the TypeSafe API.
- Stars
- 39
- Language
- Java
- Published by
- Community
- Author
- danvega
- Last verified
- Oct 2026
About this project
Ask typed questions with TypeSafe Jev from a Spring MVC application. Add one dependency, set an API key, and inject JevClient. Spring Boot 4.0+ · Java 17+ · Spring MVC · RestClient · Jackson 3. This is an independent community project. Version 0.1.0-SNAPSHOT is a local development version and is not published to Maven Central. First, build and install the starter from this repository: Add it to an existing Spring Boot 4 MVC application:
Quoted from the project's README. Read the full README.
Works forJev for Classification
Used inJev for Software & DevTools
- Languages
- Java
Highlights
- Activates in servlet apps with no enable annotation, supplies one JevClient, and backs off when you define your own bean.
- Asks noul, choice, and score questions in one evaluate call, exposing probabilities, confidence, model, and token usage.
- Reuses your RestClient.Builder and Boot timeout properties; configures api-key, base-url, and model via jev.* properties.
- Requires building 0.1.0-SNAPSHOT locally with Maven since it is not published to Maven Central, plus a TypeSafe API key.
Watch out
Needs Spring Boot 4 with Java 17+; each evaluation makes one attempt with no automatic retries, and the app decides its own act thresholds. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
Build and install 0.1.0-SNAPSHOT locally with ./mvnw clean install because it is not published to Maven Central. No enable annotation is needed; it activates in servlet apps and backs off when you supply your own JevClient.
It clones Boot's configured RestClient.Builder and uses Boot 4 spring.http.clients connect and read timeouts application-wide, adding no timeout of its own. Each evaluation makes one attempt; for 429/529 responses honor Retry-After with bounded backoff in your code.
Pass a JevRequest with an explicit model such as jev-1.13.0 for one call, or declare a JevClient bean built from a cloned RestClient.Builder with your own base URL, headers, and key. A custom bean then owns credentials and HTTP settings.
Yes, when spring.threads.virtual.enabled is true on JDK 21+ with embedded Tomcat, MVC requests run on virtual threads and the synchronous JevClient call blocks on that thread. The starter changes no threading settings itself, and Boot falls back to platform threads on JDK 17.
Spring Boot 4.0 or newer on Java 17+, using Spring MVC with RestClient and Jackson 3. Your application supplies spring-boot-starter-webmvc; the starter supplies spring-boot-starter-restclient and starts no web server of its own. Properties are jev.api-key with a TYPESAFE_API_KEY fallback, jev.base-url, jev.model defaulting to jev-latest and jev.enabled, all with generated IDE completion metadata.
No annotation and no component scanning. It activates in servlet applications, supplies one JevClient, and backs off when you declare your own, which then owns the credentials and HTTP settings. It makes no HTTP calls during startup, and a missing API key produces an actionable startup error rather than a silent fallback; an explicitly blank key is an error too.
Failures surface as Spring's RestClientResponseException with status, headers including Retry-After and body preserved, ResourceAccessException for connection problems, and RestClientException for malformed responses. Missing numeric values never become zero and unknown JSON fields are ignored, but an unknown answer type or a mismatched answer name or type fails. The test matrix covers Boot 4.0.0, 4.0.8 and 4.1.1 on Java 17, 21 and 25, offline and keyless.
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