首先，如果要在eclipse上进行任何Java Web应用程序开发，请确保您使用的是Java EE开发人员的Eclipse IDE.这将获得已经安装的最相关的插件，并阻止您下载任何其他插件.

First, if you are going to do any Java web application development on eclipse, please make sure you are using Eclipse IDE for Java EE Developers. This will get most relevant plugins already installed and prevents you from downloading any further plugins.

您可以通过DTP(数据工具平台)插件下载其他连接配置文件.通过"Eclipse Marketplace"，搜索DTP或"Install New Software ..."，在"Work with:"字段中输入您的Eclipse版本(在本例中为"Kepler")，然后查找数据库开发">"Data Tools Platform" Enablement Extender SDK"

You can download additional connection profiles via the DTP (Data Tools Platform) plugin. Either via "Eclipse Marketplace", Search for DTP or "Install New Software...", Enter your eclipse version in the "Work with: " field (in this case "Kepler ") and look for the Database Development > Data Tools Platform Enablement Extender SDK"