For artifact {org.springframework.boot:spring-boot-starter-test:null:jar}: The version cannot be empty.

这是一个 Maven 构建时出现的错误信息，意思是 Spring Boot 的测试依赖中的版本信息为空。解决这个问题需要指定该依赖的版本号，可以在 Maven 的 POM 文件中添加对应的版本号信息。例如：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <version>2.5.1</version>
    <scope>test</scope>
</dependency>

这样就可以解决该错误，使 Maven 构建成功。

相关问题

For artifact {org.springframework.boot:spring-boot-starter-actuator:null:jar}: The version cannot be empty.

Hello, it seems like you're facing an issue with the artifact `{org.springframework.boot:spring-boot-starter-actuator:null:jar}`. The error message indicates that the version of this artifact cannot be empty.

To resolve this issue, you need to provide a valid version for the `spring-boot-starter-actuator` dependency. Make sure that you specify the correct version number in your project's build file or dependency management configuration.

For example, if you're using Maven, you can add the following dependency to your `pom.xml` file:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version><!-- Add the desired version here --></version>
</dependency>

Replace `<!-- Add the desired version here -->` with the actual version number you want to use, such as `2.5.2`.

If you're using a different build tool or dependency management system, the steps may vary slightly. Let me know if you need further assistance or if you have any more questions!

For artifact {org.springframework.boot:spring-boot-starter-web:null:jar}: The version cannot be empty.

这个错误提示表明在使用 Spring Boot 的 web starter 时，版本号为空。请在 Maven 或 Gradle 配置文件中指定该 starter 的版本号，例如：

Maven：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>2.5.5</version>
</dependency>

Gradle：

implementation 'org.springframework.boot:spring-boot-starter-web:2.5.5'

请注意将版本号替换为您所需的版本。