Spring Cloud Config Spring Boot 4.0.0-M3 breaks Spring Cloud Config

Spring Boot 4.0.0-M3 causes issues with Spring Cloud 2025.1.0-M2 (as well as 2025.1.0-SNAPSHOT) due to the package name changes.

I saw that https://github.com/spring-cloud/spring-cloud-config/pull/3059 by @philwebb partially addressed this, but there seem to be additional changes necessary.

Exception in thread "main" java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
        at java.base/java.lang.reflect.Method.invoke(Unknown Source)
        at org.springframework.boot.loader.launch.Launcher.launch(Launcher.java:102)
        at org.springframework.boot.loader.launch.Launcher.launch(Launcher.java:64)
        at org.springframework.boot.loader.launch.JarLauncher.main(JarLauncher.java:40)
Caused by: java.lang.IllegalArgumentException: Unable to instantiate factory class [org.springframework.cloud.bindings.boot.BindingFlattenedEnvironmentPostProcessor] for factory type [org.springframework.context.ApplicationListener]
        at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$throwing$0(SpringFactoriesLoader.java:629)
        at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$handleMessage$0(SpringFactoriesLoader.java:653)
        at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:225)
        at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:201)
        at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:157)
        at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:468)
        at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:464)
        at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:281)
        at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:259)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1361)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1350)
        at gov.nyc.dohmh.DockerMonitorApplication.main(DockerMonitorApplication.java:13)
        ... 5 more
Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/env/EnvironmentPostProcessor
        at java.base/java.lang.ClassLoader.defineClass1(Native Method)
        at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
        at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
        at java.base/java.net.URLClassLoader.findClass(Unknown Source)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at org.springframework.boot.loader.net.protocol.jar.JarUrlClassLoader.loadClass(JarUrlClassLoader.java:97)
        at org.springframework.boot.loader.launch.LaunchedClassLoader.loadClass(LaunchedClassLoader.java:91)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Unknown Source)
        at org.springframework.util.ClassUtils.forName(ClassUtils.java:302)
        at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:218)
        ... 14 more
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.env.EnvironmentPostProcessor
        at java.base/java.net.URLClassLoader.findClass(Unknown Source)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at org.springframework.boot.loader.net.protocol.jar.JarUrlClassLoader.loadClass(JarUrlClassLoader.java:97)
        at org.springframework.boot.loader.launch.LaunchedClassLoader.loadClass(LaunchedClassLoader.java:91)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        ... 27 more

Comment From: ryanjbaxter

This looks like a problem with spring cloud bindings not spring cloud config.

Unable to instantiate factory class [org.springframework.cloud.bindings.boot.BindingFlattenedEnvironmentPostProcessor

How are you running the application?

Comment From: westmc

This was an existing application that I am using as a test for SB 4.

4.0.0-M2 + 2025.1.0-M2 worked, but 4.0.0-M3 + 2025.1.0-SNAPSHOT didn't

...
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>4.0.0-M3</version>
    </parent>

    <repositories>
        <repository>
            <id>repository.spring.snapshot</id>
            <name>Spring Snapshot Repository</name>
            <url>https://repo.spring.io/snapshot</url>
        </repository>
    </repositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>2025.1.0-SNAPSHOT</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
...
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
...
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${project.parent.version}</version>
            </plugin>
        </plugins>
    </build>
</project>

The app is containerized and pointing to a config server using...

spring.config.import="configserver:http://XXX:XXX@XXX"