maven-2 - Maven 未下载快照

Question

我正在尝试使用位于本地网络中的存储库设置 Maven，并且我已经设置了一个用于快照的存储库和一个用于发布的存储库(均为 apache archiva)。

从发布存储库下载软件包效果很好。但是，当我尝试从快照存储库加载 SNAPSHOT 版本时，当我尝试下载我自己部署的 SNAPSHOT 时，我不断收到错误:

[INFO] ------------------------------------------------------------------------  
[ERROR] BUILD ERROR  
[INFO] ------------------------------------------------------------------------  
[INFO] Failed to resolve artifact.  

Missing:  
----------  
1) my.company:product2:jar.lastUpdated:0.0.2-SNAPSHOT

  Try downloading the file manually from the project website.  
[...]

 Path to dependency:   
        1) my.company:product1:war:0.0.1-SNAPSHOT  
        2) my.company:product2:jar.lastUpdated:0.0.2-SNAPSHOT  

 ----------
1 required artifact is missing.

for artifact: 
 my.company:product1:war:0.0.1-SNAPSHOT

from the specified remote repositories:  
  my-internal (http://my-repo:8080/archiva/repository/internal),  
  central (http://repo1.maven.org/maven2),
  my-snapshots (http://my-repo:8080/archiva/repository/snapshots),

该软件包在快照存储库中可用，网络已连接，登录工作正常。

我的 pom.xml 看起来像这样:

 [...]
<repositories>
  <repository>
  <id>my-snapshots</id>
  <name>my name Snapshots Repository</name>
  <url>http://my-snapshots:8080/archiva/repository/snapshots</url>
  <snapshots>
<enabled/>
<updatePolicy/>
<checksumPolicy/>
</snapshots>
</repository>
<repository>
  <id>my-internal</id>
  <name>my name internal Repository</name>
  <url>http://my-repo:8080/archiva/repository/internal</url>
</repository>
  </repositories>
 [...]

<dependency>
    <groupId>my.company</groupId>
    <artifactId>frontend-api</artifactId>
    <version>0.0.2-SNAPSHOT</version>
    <type>jar.lastUpdated</type>
</dependency>
 [...]

我还检查了从快照存储库下载的 maven-metadata.xml:

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
 <groupId>my.company</groupId>
 <artifactId>product2</artifactId>
 <version>0.0.2-SNAPSHOT</version>
 <versioning>
    <snapshot>
      <buildNumber>7</buildNumber>
     <timestamp>20090824.130209</timestamp>
  </snapshot>
   <lastUpdated>20090824130209</lastUpdated>
 </versioning>
</metadata>

它显示了正确的日期和时间戳(存储库中存在包含此时间戳的包)。

我是否遗漏了有关存储库设置或快照概念的内容？有人遇到同样的问题吗？或者有人知道有关快照和存储库的一些详细文档吗？

Answer 1

my-app 的依赖声明是什么样的？我希望它看起来像这样:

<dependency>
  <groupId>my.company</groupId>
  <artifactId>product2</artifactId>
  <version>0.0.2-SNAPSHOT</version>
</dependency>

从错误来看，它似乎是由原型(prototype)生成的，并添加了lastUpdated类型。如果是这种情况，删除 lastUpdated 应该可以解决问题。

如果不是这样，您能分享一下您的 POM 部分吗？

有关 Maven SNAPSHOT 版本的更多信息，请参阅 Maven book :

Maven versions can contain a string literal to signify that a project is currently under active development. If a version contains the string “SNAPSHOT,” then Maven will expand this token to a date and time value converted to UTC (Coordinated Universal Time) when you install or release this component. For example, if your project has a version of “1.0-SNAPSHOT” and you deploy this project’s artifacts to a Maven repository, Maven would expand this version to “1.0-20080207-230803-1” if you were to deploy a release at 11:08 PM on February 7th, 2008 UTC. In other words, when you deploy a snapshot, you are not making a release of a software component; you are releasing a snapshot of a component at a specific time.

因此，通常不需要 lastUpdated 属性。