Question

我想在eclipse中使用liferay-maven-plugin创建一个liferay插件portlet，但每次我尝试这样做时都会出现这个错误：

Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project 'sample-portlet'.
Could not calculate build plan: Plugin com.liferay.maven.plugins:liferay-maven-plugin:6.2.1 or one of its dependencies could not be resolved: Failure to find com.liferay.maven.plugins:liferay-maven-plugin:jar:6.2.1 in http://repo.maven.apache.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
Plugin com.liferay.maven.plugins:liferay-maven-plugin:6.2.1 or one of its dependencies could not be resolved: Failure to find com.liferay.maven.plugins:liferay-maven-plugin:jar:6.2.1 in http://repo.maven.apache.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
Could not calculate build plan: Plugin com.liferay.maven.plugins:liferay-maven-plugin:6.2.1 or one of its dependencies could not be resolved: Failure to find com.liferay.maven.plugins:liferay-maven-plugin:jar:6.2.1 in http://repo.maven.apache.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
Plugin com.liferay.maven.plugins:liferay-maven-plugin:6.2.1 or one of its dependencies could not be resolved: Failure to find com.liferay.maven.plugins:liferay-maven-plugin:jar:6.2.1 in http://repo.maven.apache.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

Answer 1

关闭eclipse
删除.m2 respo
启动eclipse
保持网络连接，让maven更新所有依赖项

Answer 2

当我尝试创建Maven项目时，使用Eclipse（实际上是Spring Tool Suite [STS]）时遇到了类似的错误

Could not calculate build plan: Plugin org.apache.maven.plugins:maven-war-plugin:3.2.1 or one of its dependencies could not be resolved ...

看起来像maven不喜欢http（我有时使用.m2 / setting.xml进行设置），并且拒绝下载所需的内容。

501 HTTPS Required. 
Use https://repo.maven.apache.org/maven2/
More information at https://links.sonatype.com/central/501-https-required

以上网站告诉我以下内容：

Effective January 15, 2020, The Central Repository no longer supports insecure 
communication over plain HTTP and requires that all requests to the repository are 
encrypted over HTTPS.

所以我将http更改为https

但是我仍然需要将Maven证书导入到Java truststore中。为此，我导出了repo.maven.apache.org证书，并使用Java'keytool'命令将其导入。

在这里，我列出了进行证书导入的一种方法。

Spring tool suite- SunCertPathBuilderException: unable to find valid certification path to requested target

最后一步，我必须重新启动STS。之后，它似乎对我有用。

对我来说，这里的课程是从头开始在需要的地方使用https，这样我就不会遇到这样的问题。

Answer 3

似乎maven不再支持不安全的协议，因此我将maven存储库URL从http更改为https，并且对我有用。

<mirror>
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<url>https://repo.maven.apache.org/maven2/</url>
</mirror>

检查以下链接以获取更多信息 https://links.sonatype.com/central/501-https-required

在eclipse中运行构建器“Maven Project Builder”的错误

3 个答案: