Question

我正在从https://www.dineshonjava.com/microservices-with-spring-boot/开发代码。当我将spring-boot-starter-parent从1.5.4.RELEASE更新为2.0.4.RELEASE时，构建失败。

任何人都可以指导我这是什么问题吗？

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

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，使用已弃用的启动程序会记录一个警告，并在其中使用要使用的新启动程序的名称。

因此更改： spring-cloud-starter-eureka-server 到spring-cloud-starter-netflix-eureka-server。

Answer 2

添加以下int Pom.xml

<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>

Answer 3

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 4

1º）从pom.xml中删除依赖项并保存文件；

2º）转到STS项目>右键单击> Spring> Edit Starters>搜索到 Eureka Discovery Client 并标记checkbok>确定。

此操作解决了我的问题。

Answer 5

为hystrix添加依赖项时，即使遇到类似的错误。

错误：项目构建错误：“ dependencies.dependency.version” org.springframework.cloud:spring-cloud-starter-hystrix:jar丢失

它在更改了netflix <artifactId>

后有效

from: spring-cloud-starter-hystrix 
to:   spring-cloud-starter-netflix-hystrix

Answer 6

我也面临着类似的问题。使用下面的pom.xml有帮助

<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>   

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

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

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

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

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>

    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <scope>runtime</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </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>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

Answer 7

尝试添加以下全球版本，

<properties>
    <java.version>11</java.version>
    <spring-cloud.version>2020.0.2</spring-cloud.version>
</properties>

然后没有版本标签的依赖如下，

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

这可能对某些人有所帮助。

Answer 8

这里有几件事。我试图创建Eureka服务器，但遇到了两个问题。

第一件事

如果您使用的是spring-cloud-starter-eureka-server，请将其更改为spring-cloud-starter-netflix-eureka-server。

该链接将提供更改的详细信息。 https://github.com/spring-projects/spring-cloud/wiki/Spring-Cloud-Edgware-Release-Notes

我最近从https://start.spring.io/创建了启动项目，该项目在pom.xml中具有最新更改

这是它的样子

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

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

您需要确保eureka服务器依赖版本正确。您可以通过在属性标签中添加<spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>和在dependencyManagement的版本标签中添加${spring-cloud.version}来确保

如果看不到<dependencyManagement>标记，则将整个依赖项添加到pom.xml中。

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

我希望这会有所帮助。

Answer 9

设置版本后：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    <version>3.0.0</version>
</dependency>

错误消失了。可能不是生产的最佳解决方案。

Answer 10

更新

Hoxton.RC1

到

格林尼治。发布

***在pom.xml中

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

10 个答案: