我是Spring Boot的初學(xué)者，我正在嘗試運(yùn)行單元測試，我使用maven進(jìn)行包管理，但它無法導(dǎo)入相應(yīng)的包，從而導(dǎo)致一些錯(cuò)誤，例如無法使用來自org.springframework的注釋。開機(jī)測試。誰能告訴我如何解決這些問題？謝謝！spring-boot-starter-test 的顏色為灰色。下面是我的 pom.xml<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.mastering.spring</groupId>  <artifactId>springboot-example</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>war</packaging>  <parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>2.0.0.M1</version> </parent> <properties>    <java.version>1.8</java.version> </properties> <repositories>    <repository>        <id>spring-milestones</id>        <name>Spring Milestones</name>        <url>https://repo.spring.io/milestone</url>        <snapshots>        <enabled>false</enabled>        </snapshots>    </repository> </repositories> <pluginRepositories>    <pluginRepository>        <id>spring-milestones</id>        <name>Spring Milestones</name>        <url>https://repo.spring.io/milestone</url>        <snapshots>        <enabled>false</enabled>        </snapshots>    </pluginRepository> </pluginRepositories> <build>    <plugins>        <plugin>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-maven-plugin</artifactId>        </plugin>    </plugins> </build> <dependencies>    <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>