如果你是一个代理，你必须更新settings.xml文件(在你的MAVEN_HOME的conf文件夹下，文件本身包含关于代理设置的信息)，另外你可能需要更新你的Eclipse网络设置(窗口->Preferences…)—>类型Network Connections)。

尝试使用-X或——debug来获得调试输出，这可以提供关于问题的额外信息。

由于删除了'maven-compiler-plugin 2.0.2'而出现上述错误 来自maven存储库。 对我来说，当我将'maven-compiler-plugin'降级到2.0或2.0.1版本时，上述错误得到了解决。

尝试执行

mvn -U clean

或者在eclipse中运行> Maven Clean和Maven >更新项目上下文菜单中的快照

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.

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

只需删除maven本地存储库中的原型。如上所述，它发生在原型下载失败的情况下。