Fail to start qos server: dubbo version: current host: java.net.BindException:

报错信息如下：

  Address already in use
    at sun.nio.ch.Net.bind0(Native Method)
            at sun.nio.ch.Net.bind(Net.java:437)
            at sun.nio.ch.Net.bind(Net.java:429)
            at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
            at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:127)
            at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:554)
            at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1258)
            at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:512)
            at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:497)
            at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:980)
            at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:250)