当在play控制台发出“run”命令时，如何更改开发模式下play框架使用的默认端口。
这是playframework 2.0测试版。
使用http。端口配置参数在命令行或在application.conf中似乎没有影响:
C:\dev\prototype\activiti-preso>play run --http.port=8080
[info] Loading project definition from C:\dev\prototype\activiti-preso\project
[info] Set current project to activiti-preso (in build file:/C:/dev/prototype/activiti-preso/)
Windows, really? Ok, disabling colors.
--- (Running the application from SBT, auto-reloading is enabled) ---
[error] org.jboss.netty.channel.ChannelException: Failed to bind to: 0.0.0.0/0.0.0.0:9000
[error] Use 'last' for the full log.
