I am using Apache Geode to develop a asimple CRUD application. I’ve used below to start the Gemfire

docker run -it apachegeode/geode

Error:

java.lang.NoClassDefFoundError: org/springframework/data/gemfire/util/SpringExtensions
    at java.base/java.lang.ClassLoader.defineClass1(Native Method)
    at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
    at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
    at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:800)
    at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:698)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:621)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    at org.springframework.geode.boot.autoconfigure.RegionTemplateAutoConfiguration.lambda$setAutoConfiguredRegionTemplateDependencies$3(RegionTemplateAutoConfiguration.java:215)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
    at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1620)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
    at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
    at org.springframework.geode.boot.autoconfigure.RegionTemplateAutoConfiguration.setAutoConfiguredRegionTemplateDependencies(RegionTemplateAutoConfiguration.java:215)
    at org.springframework.geode.boot.autoconfigure.RegionTemplateAutoConfiguration.lambda$regionTemplateBeanFactoryPostProcessor$0(RegionTemplateAutoConfiguration.java:144)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:325)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:198)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
    at com.example.gemfirebasic.Application.main(Application.java:19)
Caused by: java.lang.ClassNotFoundException: org.springframework.data.gemfire.util.SpringExtensions
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    ... 31 common frames omitted

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>00-gemfire-basic</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>00-gemfire-basic</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
        <spring-geode.version>1.7.5</spring-geode.version>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.springframework.geode</groupId>
            <artifactId>spring-geode-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.geode</groupId>
            <artifactId>spring-geode-starter-session</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.geode</groupId>
            <artifactId>spring-geode-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.geode</groupId>
            <artifactId>spring-geode-starter-logging</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.geode</groupId>
                <artifactId>spring-geode-bom</artifactId>
                <version>${spring-geode.version}</version>
                <scope>import</scope>
                <type>pom</type>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Customer.java

@Region("Customers")
@RequiredArgsConstructor(staticName = "create")
@NoArgsConstructor
@Data
public class Customer {

    @Id
    @NonNull
    private Long id;

    @NonNull
    private String name;
}

CustomerRepository.java
public interface CustomerRepository extends CrudRepository<Customer, Long> {

    Customer findByNameLike(String name);
}

MainApp.java

@SpringBootApplication
@EnableEntityDefinedRegions(basePackageClasses = Customer.class, clientRegionShortcut = ClientRegionShortcut.LOCAL)
public class Application implements CommandLineRunner {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Autowired
    private CustomerRepository customerRepository;

    @Override
    public void run(String... args) throws Exception {
        Customer c1 = Customer.create(1L, "John Doe");
        Customer c2 = Customer.create(2L, "Jane Doe");
        Customer c3 = Customer.create(3L, "Jack Doe");
        Customer c4 = Customer.create(4L, "Mike Doe");
        Customer c5 = Customer.create(5L, "Matt Doe");

        customerRepository.saveAll(Arrays.asList(c1, c2, c3, c4, c5));

        customerRepository.findAll().forEach(System.out::println);
    }
}

>Solution :

Looking at the dependencies for the 1.7.5 version of Spring Data for Geode it requires at least Spring Boot 2.7.5. You are using Spring Boot 2.7.1 which at the moment lead to pulling in different jars for Spring and Spring Boot I suspect leading to incompatible versions.

So to fix upgrade to the latest Spring Boot 2.7 version.