java.lang.ClassNotFoundException: jakarta.servlet.http.HttpSessionContext with Spring Boot 3 and Jet-CodePudding

I community, I'm trying to run a small example with Spring boot 3 and Jetty server before upgrading the production code but I'm getting this error java.lang.ClassNotFoundException: jakarta.servlet.http.HttpSessionContext and the services does not start. This is my Gradle config.

plugins {
    id 'java'
    id 'idea'
    id 'org.springframework.boot' version '3.0.1'
    id 'io.spring.dependency-management' version '1.1.0'
}

idea {
    module {
        downloadJavadoc = false
        downloadSources = false
    }
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '17'

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-security'

    implementation 'org.springframework.boot:spring-boot-starter-jetty'
    implementation('org.springframework.boot:spring-boot-starter-web') {
        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-tomcat'
    }

    compileOnly 'org.projectlombok:lombok'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

tasks.named('test') {
    useJUnitPlatform()
}

and the dependeincies.

HttpSessionContext class no longer exists but somehow, the latest version Jetty still depends on it.

I'm expecting to make it run with Jetty without migrating to another server.

CodePudding user response：

As Jaokim Erdfelt already mentioned, Spring Boot 3 rely on Jakarta Servlet 6.0.0 (see https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-3.0-Release-Notes) and the spring-boot-starter-jetty includes Jetty 11 which is build on Jakarta Servlet 5.0.0 (see https://java.libhunt.com/jetty-project-changelog/11.0.0). So this is an Issue in the starter itself.

To use jetty you have to downgrade the jakarta-servlet version (see https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-3.0-Migration-Guide#jetty) setting

ext["jakarta-servlet.version"] = "5.0.0"

CodePudding user response：

Spring 3 is for Servlet 6 which is available in Jetty 12