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

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

1. 关闭日食
2. 删除.m2 respo
3. 开始日食
4. 保持网络连接，让maven更新所有依赖项