Telnet 命令擴充

<dubbo:protocol telnet="xxx,yyy" />
<!-- The default value setting, when <dubbo:protocol> does not configure the telnet attribute, use this configuration -->
<dubbo:provider telnet="xxx,yyy" />

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxTelnetHandler.java (implement TelnetHandler interface)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.remoting.telnet.TelnetHandler (plain text file, content: xxx=com.xxx.XxxTelnetHandler)

package com.xxx;
 
import org.apache.dubbo.remoting.telnet.TelnetHandler;
 
@Help(parameter="...", summary="...", detail="...")
 
public class XxxTelnetHandler implements TelnetHandler {
    public String telnet(Channel channel, String message) throws RemotingException {
        //...
    }
}

xxx=com.xxx.XxxTelnetHandler

telnet 127.0.0.1 20880
dubbo> xxx args