将 Spring 引导父级导入 Pom.xml 时出错

Question

我正在尝试使用 maven 创建示例 Spring-Boot 项目，但是当我导入 Eclipse 时。 我在 Pom.xml 中收到关于 spring-boot 父级的错误，但是当我从终端运行 mvn 命令时。 它工作正常。 此外，在主 class 中，它无法识别 org.springframework.*

我收到一个错误，上面写着

Project build error: Non-resolvable parent POM: Failure to transfer org.springframework.boot:spring-boot-starter-parent:pom:2.3.0.RELEASE from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:2.3.0.RELEASE from/to central (http://repo.maven.apache.org/maven2): Failed to transfer http://repo.maven.apache.org/maven2/org/springframework/boot/spring-boot-starter-parent/2.3.0.RELEASE/spring-boot-starter-parent-2.3.0.RELEASE.pom. Error code 501, HTTPS Required and 'parent.relativePath' points at wrong local POM

我的 Pom.xml 看起来像这样

    <?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
        <!-- <relativePath /> -->
    </parent>
    <groupId>com.test</groupId>
    <artifactId>products</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>products</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.3.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <version>2.3.0.RELEASE</version>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0.RELEASE</version>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

Error code 501, HTTPS Required - 此错误表明您正在尝试使用HTTP协议连接到 maven 中央存储库

从 2020 年初开始，maven 中央仅支持通过HTTPS进行通信。 有关更多详细信息，请参阅此页面

验证您的 maven 设置。 If you have configured maven central repository with http urls http://repo1.maven.org or http://repo.maven.apache.org/ switch url to https

Answer 2

尝试在 pom.xml 中添加存储库。 还要确保您有正确的互联网连接，以便从 repo 下载依赖项。

<repositories>
        <repository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </repository>
    </repositories>