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java - 为什么maven从spring repo下载jar？

问题描述

我在 settings.xml 和 pom.xml 中有一个像这样的镜像

设置.xml

  <?xml version="1.0" encoding="UTF-8"?>

  <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

    <localRepository>${user.home}/.m2/repository</localRepository>

    <pluginGroups>
    </pluginGroups>

    <proxies>
    </proxies>
    <servers>
      <server>
        <id>nexus-release</id>
        <username>username</username>
        <password>password</password>
      </server>

      <server>
        <id>nexus-snapshot</id>
        <username>username</username>
        <password>password</password>
      </server>
    </servers>

    <mirrors>
       <mirror>
        <id>nexus-any</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus any</name>
        <url>http://anyHost:2227/repository/maven-public</url>
      </mirror>
    </mirrors>
    <profiles>
    </profiles>
  </settings>

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.my.projecy</groupId>
<artifactId>my-project</artifactId>
<packaging>pom</packaging>
<version>1.3.0</version>

<modules>
    <module>my-project-pool</module>
    <module>my-project-business</module>
    <module>my-project-web-deploy</module>
    <module>my-project-task-deploy</module>
    <module>my-project-stats</module>
    <module>my-project-bizlog</module>
</modules>

<name>my-project</name>
<description>Educational Administration Offline System</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.0.RELEASE</version>
    <relativePath/>
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <mybatis.version>1.3.2</mybatis.version>
    <httpClient.version>4.5.5</httpClient.version>
    <maven.plugins.jar.version>3.1.0</maven.plugins.jar.version>
    <maven.plugins.assembly.version>3.1.0</maven.plugins.assembly.version>
    <offline.api.version>1.3.1-SNAPSHOT</offline.api.version>
    <online.api.version>1.3.0-SNAPSHOT</online.api.version>
    <starter.httpclient.version>1.0.0-SNAPSHOT</starter.httpclient.version>
    <lombok.version>1.16.2</lombok.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>${lombok.version}</version>
        <scope>provided</scope>
    </dependency>

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

    <dependency>
        <groupId>com.my.projecy.starter</groupId>
        <artifactId>httpclient-starter</artifactId>
        <version>${starter.httpclient.version}</version>
    </dependency>

    <dependency>
        <groupId>com.my.projecy</groupId>
        <artifactId>bluesky-common</artifactId>
        <version>1.1-SNAPSHOT</version>
    </dependency>

    <dependency>
        <groupId>com.my.projecy</groupId>
        <artifactId>ea-api-online</artifactId>
        <version>${online.api.version}</version>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>${mybatis.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>${httpClient.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-pool</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-business</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-web-deploy</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-task-deploy</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>ea-api-offline</artifactId>
            <version>${offline.api.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-stats</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.my.projecy</groupId>
            <artifactId>my-project-bizlog</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>${maven.plugins.assembly.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>

但是当我尝试编译我的项目时，我得到了这个错误：

Could not find artifact com.my.package:httpclient-starter:jar:1.0.0-SNAPSHOT
in spring-snapshot (https://repo.spring.io/snapshot)
  1. 我试图删除本地 repo 下的所有文件夹或mvn clean compile -U
  2. 我用 settings.xml 和 pom.xml 尝试了 grep "repo.spring.io" 但什么也没得到
  3. 仅使用单个 repo 对我有用。

像这样：

<mirror>
  <id>my-id</id>
  <mirrorOf>*</mirrorOf>
  <name>any name</name>
  <url>http://anyHost:2227/repository/maven-public</url>
</mirror>

我怎么知道为什么 maven 从 spring repo 下载这个依赖？

标签： javamavenspring-boot

解决方案

让我们从从 Spring 的快照存储库中下载 Maven 的部分开始。从您在问题中向我们展示的内容来看，至少不清楚（如果不存在）您在项目中定义了任何快照存储库。因为这是一个 Spring Boot 项目，它会通过父项目（..repo.spring.io..）给你设置一个。这就是为什么您的项目会访问此特定服务器的原因。

您尝试下载一个您可能自己放入nexus的jar，对吗？该版本<sth>-SNAPSHOT使 Maven 尝试从某个快照服务器获取。

您的镜像必须是mirrorOf中央存储库，我只是假设您的 jar 不在镜像中，而是“在”镜像中。

我的想法是将您的镜像设置为项目中的存储库，pom.xml如下所示

<repositories>
  <repository>
    <id>myInternalRepository</id>
    <url>http://localhost:8081/nexus/content/groups/???</url>
    <snapshots>
      <enabled>true</enabled>
    </snapshots>
</repository>

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