An error occurred while installing the items
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Install, operand=null --> [R]net.sf.fjep.fatjar 0.0.31, action=).
Failed to prepare partial IU: [R]net.sf.fjep.fatjar 0.0.31.
<span style="font-size: 14px; line-height: 24px; font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">解决方案：</span>
Help -> Install New Software... -> Work with
-> 选择“The Eclipse Project Updates - http://download.eclipse.org/eclipse/updates/4.4”
-> 勾选"Eclipse Tests, Examples, and Extras" 下的 "Eclipse 2.0 Style Plugin Support"
安装要花点时间，耐心等待，安装完成后，再重新安装eclipse，一步一步便可以安装成功！