项目构建错误：org.springframework.cloud:'spring-cloud-starter-eureka-server:jar缺少'dependencies.dependency.version'

Question

我正在从https://www.dineshonjava.com/microservices-with-spring-boot/开发代码。当我从更新的春天开机起动亲1.5.4.RELEASE到2.0.4.RELEASE，构建得到了失败。

谁能指导我这是什么问题？

项目构建错误：org.springframework.cloud:'spring-cloud-starter-eureka-server:jar的'dependencies.dependency.version'丢失。

另一个错误：

Multiple annotations found at this line:
    - For artifact {org.springframework.cloud:spring-cloud-starter-eureka-server:null:jar}: The version cannot be empty. (org.apache.maven.plugins:maven-resources-plugin:3.0.2:resources:default-resources:process-
     resources) org.apache.maven.artifact.InvalidArtifactRTException: For artifact {org.springframework.cloud:spring-cloud-starter-eureka-server:null:jar}: The version cannot be empty. at 
     org.apache.maven.artifact.DefaultArtifact.validateIdentity(DefaultArtifact.java:148) at org.apache.maven.artifact.DefaultArtifact.<init>(DefaultArtifact.java:123) at 
     org.apache.maven.artifact.factory.DefaultArtifactFactory.createArtifact(DefaultArtifactFactory.java:157) at org.apache.maven.artifact.factory.DefaultArtifactFactory.createDependencyArtifact(DefaultArtifactFactory.java:
     57) at org.apache.maven.project.artifact.MavenMetadataSource.createDependencyArtifact(MavenMetadataSource.java:328) at 
     org.apache.maven.project.artifact.MavenMetadataSource.createArtifacts(MavenMetadataSource.java:503) at 

pom.xml

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
        </dependency>
        <!-- Eureka registration server -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <!-- <version>Camden.SR5</version> -->
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

Answer 1

如我的评论所示，一些入门者已重命名：https : //github.com/spring-projects/spring-cloud/wiki/Spring-Cloud-Edgware-Release-Notes

许多入门者未遵循正常的Spring Cloud命名约定。在Edgware中，使用不建议使用的启动程序将记录一个警告，并在该警告中使用要使用的新启动程序的名称。

因此更改 spring-cloud-starter-eureka-server 为spring-cloud-starter-netflix-eureka-server。

Answer 2

Add the following in to your pom.xml  

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.RC1</spring-cloud.version>
</properties>

    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>

    OR

    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    </dependency>

    <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>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

Answer 3

1\xc2\xba) 从 pom.xml 中删除依赖项并保存文件；

\n\n

2\xc2\xba) 进入STS项目>右键>Spring>编辑Starters>搜索到Eureka Discovery Client并勾选复选框>确定。

\n\n

这个动作解决了我的问题。

\n

Answer 4

在 Pom.xml 中添加以下内容

<properties>
        <java.version>1.8</java.version>
         <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
 </properties>

<dependencies>
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

    </dependencies>

    <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>