问题一： Scanning errors (1): 1 Could not read pom.xml
导入Maven工程到eclipse中时，发生上面错误，时因为pom.xml文件存在不能解析的内容，解决办法：
将pom.xml中的内容删减，然后再导入，等到导入成功，然后再将原内容复制过来即可。
问题二： Failure to transfer org.apache.maven:maven-archiver:pom:2.4.2 from 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. Original error: Could not transfer artifact org.apache.maven:maven-archiver:pom:2.4.2 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://repo.maven.apache.org/maven2/org/apache/maven/maven-archiver/2.4.2/maven-archiver-2.4.2.pom pom.xml /java line 1 Maven Configuration Problem
Maven更新时报错的解决办法，解决办法：
在M2对应目录里发现maven-archiver没有下载，只有lastupdate文件，删除掉； 重新project -> Maven - Update Dependencies