带有依赖项的pom.xml中的错误(缺少工件.)

Question

一个朋友给了我一个Maven项目，我正试图在我的电脑上本地运行这个项目。我在Eclipse中所做的一切，我都选择了：

文件->导入->现有Maven项目

在此之后，该项目向我展示了我的pom.xml中的4个错误(丢失工件..)：

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我尝试删除.m2文件夹的内容，然后在Eclipse中单击我的项目，选择"Run as“-> "Maven洁净”，然后选择"Run as“-> "Maven install”。但我仍然有同样的错误。我是新来的春天，所以我不知道还能做什么。

编辑：

当我尝试执行:运行as/ maven安装时，我的控制台是这样说的：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building DataLayer 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for javax.persistence:javax.persistence:jar:1.0.0 is missing, no     dependency information available
[WARNING] The POM for hibernate-core:hibernate-core:jar:4.2.1.Final is missing, no     dependency information available
[WARNING] The POM for hibernate-commons-annotations:hibernate-commons-annotations:jar:4.0.1.Final is missing, no dependency information available
[WARNING] The POM for jboss-logging:jboss-logging:jar:3.1.0.CR2 is missing, no dependency information available
[WARNING] The POM for jta:jta:jar:1.1 is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.065s
[INFO] Finished at: Wed Aug 07 11:41:45 VET 2013
[INFO] Final Memory: 4M/90M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project DataLayer: Could not resolve dependencies for     project SocialManager:DataLayer:jar:0.0.1-SNAPSHOT: The following artifacts could not be resolved: javax.persistence:javax.persistence:jar:1.0.0, hibernate-core:hibernate-core:jar:4.2.1.Final, hibernate-commons-annotations:hibernate-commons-annotations:jar:4.0.1.Final, jboss-logging:jboss-logging:jar:3.1.0.CR2, jta:jta:jar:1.1: Failure to find javax.persistence:javax.persistence:jar:1.0.0 in http://repository.jboss.org/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of JBoss repository has elapsed or updates are forced -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.

EDIT2:这是我的完整的pom.xml：https://dl.dropboxusercontent.com/u/31349296/pom.xml，当我试图在这里粘贴代码时，看起来非常糟糕。

Answer 1

似乎许多依赖项是不正确的。

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从这里下载整个POM

一个寻找正确依赖关系的好地方是Maven储存库网站。

Answer 2

我知道这是个老问题。但我希望我的回答能对某人有所帮助。我也遇到了同样的问题，我认为问题在于它无法在本地存储库中找到这些.jar文件。因此，我所做的就是将以下代码添加到我的pom.xml中，并且它工作了。

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

Answer 3

这意味着maven无法从存储库下载工件。以下步骤将对您有所帮助：

1. 转到存储库浏览器并检查工件是否存在。
2. 检查settings.xml，看看是否指定了适当的respository。
3. 检查代理设置。