如何强制maven更新?

我将我已经工作的项目导入到另一台计算机上，它开始下载依赖项。

显然我的网络连接崩溃了，现在我得到了以下信息:

    >Build errors for comics; org.apache.maven.lifecycle.LifecycleExecutionException:
    Failed to execute goal on project comicsTest: Could not resolve dependencies for project comicsTest:comicsTest:war:0.0.1-SNAPSHOT:
    The following artifacts could not be resolved:
    org.springframework:spring-context:jar:3.0.5.RELEASE,
    org.hibernate:hibernate-entitymanager:jar:3.6.0.Final,
    org.hibernate:hibernate-core:jar:3.6.0.Final,
    org.hibernate:hibernate-commons-annotations:jar:3.2.0.Final,
    org.aspectj:aspectjweaver:jar:1.6.8,
    commons-lang:commons-lang:jar:2.5,

    >mysql:mysql-connector-java:jar:5.1.13: Failure to transfer org.springframework:spring-context:jar:3.0.5.RELEASE from http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced.

    >Original error: Could not transfer artifact org.springframework:spring-context:jar:3.0.5.RELEASE from central (http://repo1.maven.org/maven2): No response received after 60000

如何强制maven更新?

当前回答

重要的是，使用-U和不使用-U运行mvn的主要区别是-U将用远程SNAPSHOT jar覆盖本地SNAPSHOT jar。

如果你的proj中有其他模块生成jar，则从本地mvn安装创建本地快照jar。

2017-03-12 09:30:40

其他回答

这是Maven最烦人的事情之一。对我来说，会发生以下情况:如果我添加了一个依赖项，请求更多的依赖项，但是连接很慢，它会在下载和超时时停止。在计时时，所有尚未获取的依赖项都在.m2缓存中用占位符标记，Maven不会(永远不会)拾取它，除非我通过删除它从缓存中删除占位符条目(如前所述)。

所以就我所知，Maven或者更准确的说是Eclipse Maven插件在这方面有一个bug。应该有人报告此事。

2015-04-20 06:13:17

如果你不确定本地存储库中有什么，我建议使用以下选项启动构建:

-Dmaven.repo.local=localrepo

这样你就能确保在一个洁净的环境中建造。

2013-05-24 15:42:28

What maven does is, it downloads all your project's dependencies into your local repo (.m2 folder). Because of the internet causing issues with your local repo, you project is facing problems. I am not sure if this will surely help you or not but you can try deleting all the files within the repository folder inside the .m2 folder. Since there would be nothing in the local repo, maven would be forced to download the dependencies again, thus forcing an update. Generally, the .m2 folder is located at c:users:[username]:.m2

2019-04-17 17:12:47

就我而言，我首先做的是:

mvn clean install -U

它仍然显示相同的错误，然后我关闭项目，再次重新打开它。最后工作。

2014-07-22 03:56:22

如果你正在使用eclipse IDE，那么:

选择项目。按alt+F5，更新Maven项目窗口将弹出。检查-强制更新快照/发布，单击“确定”。

如果使用Intellij IDE

进入settings/Maven 总是更新快照

2018-09-19 05:20:09

如何强制maven更新?

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