getting Spring Boot [2.7.0] is not compatible with this Spring Cloud release train error

Question

I am new to spring.

I was trying to upgrade spring boot version from 2.3.3.RELEASE to 2.6.7 in existing spring batch project.

Project build completed successfully but I am getting bellow error when I run batch. Please help.

***************************
APPLICATION FAILED TO START
***************************

Description:

Your project setup is incompatible with our requirements due to following reasons:

- Spring Boot [2.6.7] is not compatible with this Spring Cloud release train

Action:
Consider applying the following actions:
- Change Spring Boot version to one of the following versions [2.3.x, 2.4.x] .
You can find the latest Spring Boot versions here [https://spring.io/projects/spring-boot#learn]. 
If you want to learn more about the Spring Cloud Release train compatibility, you can visit this page [https://spring.io/projects/spring-cloud#overview] and check the [Release Trains] section.
If you want to disable this check, just set the property [spring.cloud.compatibility-verifier.enabled=false]

My current code of build.gradle is as below,

buildscript {
    ext {
        springBootVersion = '2.6.7'
    }
}
plugins {
    id 'org.springframework.boot' version "${springBootVersion}"
}

apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

sourceCompatibility = 11

tasks.named("bootJar") {
    archiveFileName = "${archiveBaseName.get()}.${archiveExtension.get()}"
    mainClass = 'jp.co.BatchApplication'
}

jar.archiveFileName = bootJar.archiveFileName

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-batch:${springBootVersion}")
    implementation("org.springframework.boot:spring-boot-starter-web:${springBootVersion}")
    implementation("org.springframework.boot:spring-boot-starter-thymeleaf:${springBootVersion}")
    implementation("org.springframework.boot:spring-boot-starter-aop:${springBootVersion}")
    implementation("org.springframework.retry:spring-retry:1.2.5.RELEASE")
    implementation("org.projectlombok:lombok:1.18.24")
    annotationProcessor("org.projectlombok:lombok:1.18.24")
    implementation('mysql:mysql-connector-java:8.0.17')
    implementation('org.seasar.doma.boot:doma-spring-boot-starter:1.4.0')
    annotationProcessor('org.seasar.doma:doma-processor:2.35.0')
    implementation('org.apache.commons:commons-lang3:3.11')
    implementation('org.apache.commons:commons-collections4:4.4')
    implementation('com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.11.2')
    implementation("javax.xml.bind:jaxb-api:2.3.1")
    
    implementation(fileTree(dir: 'lib', include: ['*.jar']))
    implementation("org.hibernate.validator:hibernate-validator:6.1.5.Final")
    implementation('org.apache.httpcomponents:httpclient:4.5.12')
    // for r3-id-1.0.1.jar
    implementation('commons-digester:commons-digester:2.1')
    // Azure App Configuration
    implementation('com.microsoft.azure:spring-cloud-azure-appconfiguration-config-web:1.3.0')
    implementation('com.microsoft.azure:spring-cloud-azure-feature-management-web:1.3.0')

    testImplementation("org.springframework.boot:spring-boot-starter-test:${springBootVersion}")
    
}

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I guess it is not relevant to this error but I have also change DefaultBatchConfigurer class from use of MapJobRepositoryFactoryBean to JobRepositoryFactoryBean. As MapJobRepositoryFactoryBean is deprecated.

Answer 1

The error is quite explanatory ...

- Spring Boot [2.6.7] is not compatible with this Spring Cloud release train

Spring Cloud versions are tied to specific Spring Boot versions . When using Spring Cloud you cannot just upgrade Spring Boot you also need to upgrade Spring Cloud to a version that supports that Spring Boot version.

As you are using some Azure Cloud dependencies you need to upgrade those to a newer version (if available) that support a Spring Cloud version that supports Spring Boot 2.6.

Pro Tip I would also suggest to cleanup your dependencies so you benefit, more, from the Spring Boot dependency management

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-batch")
    implementation("org.springframework.boot:spring-boot-starter-web")
    implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
    implementation("org.springframework.boot:spring-boot-starter-aop")
    implementation("org.springframework.boot:spring-boot-starter-validation")
    implementation("org.springframework.retry:spring-retry")
    implementation("org.projectlombok:lombok")
    annotationProcessor("org.projectlombok:lombok")
    implementation('mysql:mysql-connector-java')
    implementation('org.seasar.doma.boot:doma-spring-boot-starter:1.4.0')
    annotationProcessor('org.seasar.doma:doma-processor:2.35.0')
    implementation('org.apache.commons:commons-lang3:3.11')
    implementation('org.apache.commons:commons-collections4:4.4')
    implementation('com.fasterxml.jackson.dataformat:jackson-dataformat-xml')
    implementation("javax.xml.bind:jaxb-api")
    // for Mu Client
    implementation(fileTree(dir: 'lib', include: ['*.jar']))
    implementation('org.apache.httpcomponents:httpclient')
    // for r3-id-3.0.1.jar
    implementation('commons-digester:commons-digester:2.1')
    // Azure App Configuration
    implementation('com.microsoft.azure:spring-cloud-azure-appconfiguration-config-web:1.3.0')
    implementation('com.microsoft.azure:spring-cloud-azure-feature-management-web:1.3.0')

    testImplementation("org.springframework.boot:spring-boot-starter-test")
    
}