首先哪些依赖关系丢失？
eclipse的一个好的maven插件是eclipse maven sonatype， m2eclipse 。

i want to install maven plug in on eclipse. but when add the maven site in install software section, and beginning to download and install it, an error occurred about dependency. how can fix it? i want a complete installation guide...

first which dependencies are missing? A good maven plugin for eclipse is the eclipse maven sonatype, m2eclipse.