警告：

DescriptionResourcePathLocationType

Build path specifies execution environment JavaSE-1.7. There are no JREs installed in the workspace that are strictly compatible with this environment. dubboxdemo-serviceBuild pathJRE System Library Problem

解决方法：

1. 右键当前项目，选择 properties，在新窗口中选择 java build path，然后切换到 Libraries 选项卡，移除“JRE System Library[J2SE 1.7]”

2. 单击“Add Library”，在新窗口中选择 JRE System Library

3. 

3.最后选择 “Executin Environment” 或默认 Workspace default JRE

5.点击Apply andclose，成功后：