Nexus 公共存储库为空无法创建 maven 项目

Question

我在 Linux 虚拟机上安装了 Nexus 2.8。启动它并且可以非常愉快地浏览到存储库。如果我从存储库视图查看存储库，它们都在服务中，并且没有一个被阻止。

我可以浏览各个 repo 索引，但我担心的一件事是，当我更新或重建索引时，我得到以下内容，其中显示 0 已扫描、更新读取等。

jvm 1    | 2014-07-10 12:08:02,115+0100 INFO  [pxpool-1-thread-3] admin org.sonatype.nexus.index.Def
aultIndexerManager - Remote indexes updated successfully for repository "Central" [id=central]
jvm 1    | 2014-07-10 12:08:02,123+0100 INFO  [pxpool-1-thread-3] admin org.sonatype.nexus.index.Nex
usScanningListener - Scanning of repositoryID="central" started.
jvm 1    | 2014-07-10 12:08:59,617+0100 INFO  [pxpool-1-thread-3] admin org.sonatype.nexus.index.Nex
usScanningListener - Scanning of repositoryID="central" finished: scanned=0, added=0, updated=0, rem
oved=0, scanningDuration=0:00:57.493
jvm 1    | 2014-07-10 12:09:00,025+0100 INFO  [pxpool-1-thread-3] admin org.sonatype.nexus.index.Def
aultIndexerManager - Publishing index for repository cen

我的公共存储库已配置为所有存储库都在可用存储库框中。我不认为我需要为此做任何其他配置，因为我还没有开始玩它只是想让默认设置首先工作。不过，我已将每个 repo 的下载远程索引设置为 true。

当我尝试通过 eclipse 创建一个 maven 项目时，我无法创建它。我在控制台中收到以下错误

10/07/2014 12:27:40 BST: [WARN] The POM for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 is missing, no dependency information available
10/07/2014 12:27:41 BST: [WARN] The POM for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 is missing, no dependency information available
10/07/2014 12:27:41 BST: [INFO] Using org.eclipse.m2e.jdt.JarLifecycleMapping lifecycle mapping for MavenProject: dcdw:dccd:0.0.1-SNAPSHOT @ C:\projects\lloyds\dccd\pom.xml.
10/07/2014 12:27:41 BST: [WARN] The POM for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 is missing, no dependency information available
10/07/2014 12:27:41 BST: [WARN] The POM for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 is missing, no dependency information available
10/07/2014 12:27:42 BST: [WARN] The POM for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 is missing, no dependency information available
10/07/2014 12:27:42 BST: [WARN] The POM for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 is missing, no dependency information available
10/07/2014 12:27:42 BST: [WARN] The POM for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 is missing, no dependency information available
10/07/2014 12:27:42 BST: [INFO] Using org.eclipse.m2e.jdt.JarLifecycleMapping lifecycle mapping for MavenProject: dcdw:dccd:0.0.1-SNAPSHOT @ C:\projects\lloyds\dccd\pom.xml.
10/07/2014 12:27:42 BST: [WARN] The POM for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 is missing, no dependency information available

我可以浏览远程并看到这些 jar 存在，为什么我不能在我的 Eclipse IDE 中下载它们？

我正在使用的设置 xml 是

<?xml version="1.0"?>
<settings 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/settings-1.0.0.xsd">


    <localRepository>c:/maven/repository</localRepository>

    <mirrors>
        <mirror>
            <id>nexus</id>
            <mirrorOf>*</mirrorOf>
            <url>http://unix.host.ip:8081/nexus/content/groups/public</url>
        </mirror>
    </mirrors>

    <profiles>
        <profile>
            <id>nexus</id>
            <!--Enable snapshots for the built in central repo to direct -->
            <!--all requests to nexus via the mirror -->
            <repositories>
                <repository>
                    <id>central</id>
                    <url>http://central</url>
                    <releases>
                        <enabled>true</enabled>
                        <updatePolicy>daily</updatePolicy>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>central</id>
                    <url>http://central</url>
                    <releases>
                        <enabled>true</enabled>
                        <updatePolicy>daily</updatePolicy>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                        <updatePolicy>always</updatePolicy>
                    </snapshots>
                </pluginRepository>
            </pluginRepositories>
        </profile>
    </profiles>
    <activeProfiles>
        <activeProfile>nexus</activeProfile>
    </activeProfiles>


</settings>

我已经设置了代理配置，因为我在防火墙后面，并确认它可以访问，因为没有引发错误并且可以运行健康检查，虽然这返回 0 但不会引发任何错误。

任何人都知道为什么这不起作用？

如果我把它放在网址中

http://unix.ip.host:8081/nexus/content/groups/public/org/apache/maven/plugins/maven-jar-plugin/2.3.2/maven-jar-plugin-2.3.2.pom?describe

我得到以下输出

Describe of /groups/public/org/apache/maven/plugins/maven-jar-plugin/2.3.2/maven-jar-

plugin-2.3.2.pom

This page describes the processing of a request made by external client, using information from the request, retrieved item (or exception if not item was retrieved) and some intermittent processing states.

Processing time

1.581 ms

Request Context

Key Value
request.address 10.175.42.118
request.remoteOnly  false
request.user    admin
request.url http://hostname:8081/nexus/content/groups/public/org/apache/maven/plugins/maven-jar-plugin/2.3.2/maven-jar-plugin-2.3.2.pom?describe
request.localOnly   false
request.agent   Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36
request.asExpired   false
org.sonatype.nexus.content.internal.ContentServlet.stopwatch    1.581 ms
request.external    true
Response Outcome

NOT FOUND (Item not found, core threw exception)

Processed repositories (IDs)

public
Applied Routings

Key Value
public  []
Exception

Type

org.sonatype.nexus.proxy.repository.GroupItemNotFoundException

Message

Path /org/apache/maven/plugins/maven-jar-plugin/2.3.2/maven-jar-plugin-2.3.2.pom not found in group repository "Public Repositories" [id=public].

Exception reasoning

public : Path /org/apache/maven/plugins/maven-jar-plugin/2.3.2/maven-jar-plugin-2.3.2.pom not found in group repository "Public Repositories" [id=public].

Answer 1

您的公共存储库组必须将所有存储库都放在标题为“Ordered Group Repositories”的左栏中，而不是在可用存储库列表中。在http://books.sonatype.com/nexus-book/reference/config-sect-repo-group.html 和http://books.sonatype.com/nexus-book/reference/confignx-sect-managing-groups.html 中查看更多详细信息

此外，您应该确认您可以使用存储库配置中的“浏览远程”选项卡通过代理配置访问远程存储库（从 Central 开始）。

一旦您检查了所有这些并修复了问题，我将删除本地 Maven 存储库 (~/.m2/repository) 并尝试命令行构建。一旦成功......使用 Eclipse 和 M2e..