Maven 无法构建 pom

Question

我从spring初始化器下载了一个spring项目，通过maven导入到sts中。

不幸的是，构建不断失败，出现以下错误：

项目构建错误：不可解析的父 POM com.dellteam:firstmicroservice:0.0.1-SNAPSHOT：无法传输
神器 org.springframework.boot:spring-boot-starter-parent:pom:2.1.0.RELEASE 从/到 spring-milestones (https://repo.spring.io/milestone): 连接重置和 'parent.relativePath' 指向没有本地 POM

请看下方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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.dellteam</groupId>
    <artifactId>firstmicroservice</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>firstmicroservice</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.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>
        <spring-cloud.version>Greenwich.M1</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</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-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-test</artifactId>
            <scope>test</scope>
        </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>

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


</project>

我以为我的 ISP 不允许我访问 https://repo.spring.io/milestone/，但事实并非如此。 我完全可以访问此网址。

我现在尝试清理和构建几次并删除了 .m2 文件夹并再次尝试重新构建项目但结果相同。

任何帮助将不胜感激。

Answer 1

这是您的互联网连接问题。检查是否需要配置代理服务器。您可以在.m2目录下的settings.xml中设置代理，请查看This link配置代理。

Answer 2

将 Spring Plugin Release Repo 添加到 Plugin-Repositories。这样它就可以找到spring-boot-maven-plugin-2.1.0.RELEASE。 在标记下添加以下行，如下所示：

<project>
  <!------ others lines -->
    <pluginRepositories>
     <pluginRepository>
        <id>repository.spring.release</id>
        <name>Spring GA Repository</name>
        <url>https://repo.spring.io/plugins-release/</url>
    </pluginRepository>
   </pluginRepositories>
 </project>

更多信息请查看 --> Spring boot starter parent 2.0.0 not found dependency