这在Windows中也适用。

Locate the {user}/.m2/repository (Using Juno /Win7 here) In the Search field in upper right of window, type ".lastupdated". Windows will look through all subfolders for these files in the directory. (I did not look through cache.) Remove them by Right-click > Delete (I kept all of the lastupdated.properties). Then go back into Eclipse, Right-click on the project and select Maven > Update Project. I selected to "Force Update of Snapshots/Releases". Click Ok and the dependencies finally resolved correctly.

设置。xml代理? 在eclipse中有maven全局\本地配置文件，添加settings.xml

在我的例子中，我在spring工具4中得到了这个错误消息

ArtifactTransferException: org.codehaus.plexus:plexus-interpolation:jar:1.26 failed to transfer from https://repo.maven.apache.org/maven2 during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.codehaus.plexus:plexus-interpolation:jar:1.26 from/to central (https://repo.maven.apache.org/maven2): repo.maven.apache.org java.lang.reflect.InvocationTargetException

这是解决方案

步骤01 -首先关闭弹簧工具应用程序

步骤02 -进入路径C:\Users\User并删除。m2文件夹

步骤03 -现在去包探索和选择你的项目

第04步-现在右键单击您的项目，进入Maven，单击更新项目

如何卸载Spring Tool 4

步骤01 -单击帮助并转到关于Spring工具套件4

步骤02 -现在点击安装细节

步骤03 -在里面，你可以看到所有已安装的软件，只需按Ctrl + A选择所有，然后单击卸载

谢谢你的回复，但经过更多的搜索，我能够解决这个问题。结果我不得不删除其中一个“*”。lastUpdated”，这是阻止我的一个插件(Maven Surefire插件)更新。我是手动清理的，因为清洁专家显然不会这么做。

问题是“*”。一个插件的lastUpdated文件阻止了maven检查更新，并且不允许下载必要的jar文件。

删除存储库中的所有文件。

转到c:\ users \ dell。M2 \资源库，选择所有文件并删除它。

然后转到项目，右键单击maven更新项目(Alt+F5)。它将下载存储库中的所有依赖文件。

这件事也发生在我身上，对此你可能有两种解决办法

If your project consist of some external or project specificdependency in it then you have to manually add it to your M2 repo folder which is located at C:\Users\Mohit.Singh.m2\repository folder and then you have to run mvn eclipse:eclipse and then mvn clean install from the project folder if you do not have any wxternal or project sppecific dependency then you may import the project into eclipse as Existing maven project then right click on project --> GO to maven --> Click on update project a window will appear check the force snapshot download option and hit on OK