thanks, solved. ...
Hard worked for several days, still not work. I used ambari to install hadoop2.2(4 nodes on 4 PC with centos 6.5).Trying to compile the plugin by ant, but seems not successful,seems the directory of hadoop not valid.So tried to download one hadoop-eclipse-plugin-2.2.0.jar and place under the folder of eclipse(kepler)plugin, but seems still cannot connect as attached. Any suggestion, thanks.