启动Spring Boot应用程序时出现Bean创建错误

bean creation error when starting spring boot application(启动Spring Boot应用程序时出现Bean创建错误)

问题描述

当我尝试运行我的Spring Boot应用程序时，我收到以下异常：

org.springframework.beans.factory.BeanCreationException：错误 创建在中定义的名为"ConfigurationPropertiesBeans"的Bean 类路径资源 [org/springframework/cloud/autoconfigure/ConfigurationPropertiesRebinderAutoConfiguration.class]： 合并Bean定义的后处理失败；嵌套异常为 Java.lang.IlLegalStateException：未能自省类 [org.springframework.cloud.context.properties.ConfigurationPropertiesBeans] 从ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@3764951d]

我认为这是版本不兼容。我在我的pom.xml中导入了Open Feign，之后它就不起作用了，但我不知道如何修复它。我用的是OPEN FIGN 2.2.5版本。 这里是我的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>

推荐答案

为了详细说明@M-deinum的评论，将Spring Boot版本设置为2.3.4.RELEASE(而不是我的2.4.2)解决了问题。在gradle中，这意味着更改：

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

至

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

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