Plugin...or one of its dependencies could not be resolved: Failed to find...jar

今天从github上下下来代码到本地，本来想用终端进行mvn compile，但是一直报错。还以为是代码有问题，就删除之后重新clone了一遍，但是发现还是有错误。如何在IDEA中删除项目请参考： juejin.cn/post/684490… 报错信息如下：

E:\IdeaProjects\run-a-mvn-command>mvn compile

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building run-a-mvn-command 1.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[WARNING] The POM for com.github.hcsp:test-plugin:jar:1.0-SNAPSHOT is missing, no dependency information available

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 0.512 s

[INFO] Finished at: 2019-09-29T13:44:59+08:00

[INFO] Final Memory: 7M/121M

[INFO] ------------------------------------------------------------------------

[ERROR] Plugin com.github.hcsp:test-plugin:1.0-SNAPSHOT or one of its dependencies could not be resolved: Failure to find com.github.hcsp:test-plugin:jar:1.0-SNAPSHOT in http://10.1.15.172:8080/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of LocalMirrorId ha s elapsed or updates are forced -> [Help 1]

无法解决插件com.github.hcsp：test-plugin：1.0-SNAPSHOT或其依赖项之一：无法在http://10.1.15.172中找到com.github.hcsp：test-plugin：jar：1.0-SNAPSHOT ：8080 / nexus / content / groups / public已缓存在本地存储库中，直到经过LocalMirrorId的更新间隔或强制执行更新后，才会重新尝试解析

[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.

[ERROR]

[ERROR] For more information about the errors and possible solutions, please read the following articles:

[ERROR] [Help 1] cwiki.apache.org/confluence/…

解决方法如下：！！！

发现是jar包有问题!!! 1.去mavnen项目默认jar包存放路径下看是否有jar包，发现jar包不存在。

注：从Maven中心仓库下载到本地的jar包的默认路径是：”{user.home}/.m2/repository”，{user.home}表示当前登录系统的用户目录(如"C:\Users\gacl")

2.可以使用Everything软件查找该jar包 1.0-SNAPSHOT.jar，在如图所示的路径下找到该jar包，直接将jar包拷到C盘的默认路径下即可。

由于是从github上拷的项目，所以我的C盘的默认路径是C:\Users\summer.m2\repository\com\github\hcsp\test-plugin\1.0-SNAPSHOT。 再次尝试的时候问题就解决了。记得刷新maven项目，实在不行重新打开该项目也可以。

3.如果Everything查找不到jar包，建议去下载jar包。