Description Resource Path Location Type
Project configuration is not up-to-date with pom.xml. Select: Maven->Update Project... from the project context menu or use Quick Fix. web-maven-222 line 1 Maven Configuration Problem
The following steps worked for me:
Close the project in Eclipse.
Delete the project in Eclipse ( but not the contents ).
Navigate to the project in file system and delete .classpath and .project files.
Go back to Eclipse and import the project as "existing maven project".
引用：http://stackoverflow.com/questions/17418630/eclipse-blue-maven-project-configuration-is-not-up-to-date-with-pom-xml
去除[WARNING] Using platform encoding (GBK actually) to copy filtered resources, i.e. build is platform dependent!
再使用maven和jetty的时候，如果你不想看到上面的警告，那么你只需要修改pom如下：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.3</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
添加<configuration>…</configuration>即可