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.

我的工作空间里只有几个项目也有类似的问题。其他具有几乎相同pom的项目根本没有错误。列出的其他答案都不能解决我的问题。我最终无意中为每个项目删除/重新应用Maven特性，错误消失了:

对于每个项目，有一个pom与“决议将不会被重新尝试…”错误:

在Eclipse中右键单击项目并选择Maven->Disable Maven Nature 右键单击Eclipse中的项目并选择Configure->Convert to Maven project

我得到这个错误的插件如下:

<groupId>org.codehaus.mojo</groupId>  
<artifactId>jaxb2-maven-plugin</artifactId>  
<version>2.5</version>  

我修改标签版本为:

<version>2.5.0</version>  

然后在eclipse中打开项目的上下文菜单，选择Maven >“更新项目…”，确保对话框中选中了“更新依赖项”，然后点击“确定”按钮。

我在Eclipse 3.6和m2eclipse中有类似的问题。

无法计算构建计划:未能将org.apache.maven.plugins:maven-resources-plugin:jar:2.4.3从http://repo1.maven.org/maven2传输到本地存储库中，直到central的更新间隔已过或强制更新，才会重新尝试解决方案。原始错误:无法从中心转移工件org.apache.maven.plugins: Maven -resources-plugin:jar:2.4.3 (http://repo1.maven.org/maven2): ConnectException project1未知Maven问题

删除所有maven*。来自本地存储库的lastUpdated文件(正如Deepak Joy建议的那样)解决了这个问题。

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

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