創建項目報錯，如圖： 
原因就是maven的配置文件不是最新的，MyEclipse2014解決方法：
1.help ->Install New sitie... 
2.點擊add 
3.填寫name和location (最好能從本地安裝，因網絡問題，可能更新不了，長時間等待，出現cannot perform operation.Computing alternate solutions,may take a while: ...)
Java代碼
- Name: MavenArchiver
- Location: http://repo1.maven.org/maven2/.m2e/connectors/m2eclipse-mavenarchiver/0.17.2/N/LATEST/
4點擊“Available Software Sites” 
5.去掉其他要安裝的插件，防止報cannot perform operation.Computing alternate solutions... 
6.選中“m2e extensions”；取消選項“Contact all update sites during install to find required software” 
7.一直next confirm 安裝更新 提示重啟eclipse 然后再右鍵項目maven update project