J2EE项目部署，添加到tomcat6.x中的时候弹出theselected server is enabled

theselected server is enabled,but is not configured properly.Deployment to it will not be permitted
until the problem is corrected.Please navigate to the server preference pages and verify the field with the prompt:tomcat jdk name:

意思是：JDK配置名字有问题

修改方法：在MyEclipse工具栏中选择windows==>preferences==>MyEclipse...==>Servers==>tomcat==>tomcat6.0==>jdk(选择你的 JDK目录)