Summary

• Fresh Jakarta Servlet Filter replacing the abandoned greengerong/prerender-java (Java 6 + Apache HttpClient 4 + Guava + Commons Lang)
• Zero runtime dependencies — only jakarta.servlet-api (provided scope) and built-in java.net.http.HttpClient
• Works with any Jakarta EE runtime: Tomcat 10+, Jetty 11+, Spring Boot 3+, Quarkus, Micronaut
• Config via env vars (PRERENDER_TOKEN, PRERENDER_SERVICE_URL) with fallback to web.xml init-params
• Same bot list and extension ignore list as all other integrations
• Maven: io.prerender:prerender-java:1.0.0, Java 17+, Jakarta Servlet 6.0

Test plan

• mvn test passes all 7 test cases
• Browser UA → passes through
• Bot UA → receives prerendered response
• Bot UA + static asset → passes through
• _escaped_fragment_ → prerendered
• X-Bufferbot header → prerendered
• POST + bot UA → passes through
• Network error (connection reset) → graceful fallback
• mvn package produces clean JAR with no runtime deps