bean creation error when starting spring boot application

Question

When i try to run my spring boot application i get this Exception:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'configurationPropertiesBeans' defined in class path resource [org/springframework/cloud/autoconfigure/ConfigurationPropertiesRebinderAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.context.properties.ConfigurationPropertiesBeans] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@3764951d]

I think it's an version incompatibility. I imported open feign in my pom.xml and after that it wasn't working, but i dont know how to fix that. I use open feign 2.2.5.RELEASE. Here my 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>2.4.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>privas.microservice</groupId>
    <artifactId>sellcar</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>sellcar</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>15</java.version>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
    </properties>

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


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

        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>jakarta.validation</groupId>
            <artifactId>jakarta.validation-api</artifactId>
            <version>2.0.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-commons</artifactId>
            <version>2.4.1</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

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

</project>

Answer 1

To elaborate on @M-deinum's comment, setting Spring Boot version to 2.3.4.RELEASE (instead of 2.4.2 in my case) solved the issue. In gradle this meant changing:

plugins {
    id 'org.springframework.boot' version '2.4.2'
    ...
}

To

plugins {
    id 'org.springframework.boot' version '2.3.4.RELEASE'
    ...
}

Answer 2

I had a same issue, and it is happening because of Spring Cloud services and Spring Boot version issues. I got rid of it by using https://start.spring.io/ to generate my project.

When you select all dependencies needed for your project, you can then click the Explore button and check the pom.xml file.

This issue happened to me when I tried to add dependency for Eureka-client to my pom.xml after generating project, so using IntelliJ.

I got the same error.

Then I went to Spring.io again select dependencies that I use for my project and also dependency for Eureka-client, clicked on Explore button and saw that I need to add this line of code under java version in pom.xml

<spring-cloud.version>2020.0.3</spring-cloud.version>

But also this lines as well:

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

So I just copy pasted it to my existing pom.xml and it worked!

Answer 3

You need to change spring boot version to Released version

from

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.0</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

to

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.3.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

Answer 4

Spring-Cloud - Hoxton.SR8 is not compatiable with Spring-boot 2.4.0

Just use either of the combinations:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.0</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<spring-cloud.version>2020.0.3</spring-cloud.version>

Or

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.0</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<spring-cloud.version>Hoxton.SR8</spring-cloud.version>