解决 Failed while installing Dynamic Web Module 3.0
解决办法:安装 Eclipse Java EE Developer Tools 和 Eclipse Java Web Developer Tools
Help -> Install New Software
Work with下拉框中选择:Oxygen - http://download.eclipse.org/releases/oxygen
注:oxygen是eclipse版本号
展开 Web, XML, Java EE and OSGI Enterprise Development 选项,选择 Eclipse Java EE Developer Tools 和 Eclipse Java Web Developer Tools 安装