@Override
    public String parseProperty(String addr, String propKey) {
        if (addr.contains("?") && !addr.endsWith("?")) {
            String part = addr.split("\\?")[1];
            for (String item : part.split("&")) {
                String[] kv = item.split("=");
                String k = kv[0];
                if (k.equals(propKey)) {
                    return kv[1];
                }
            }
        }
        return null;
    }
@see com.alipay.remoting.RemotingAddressParser#parseProperty(java.lang.String, java.lang.String)
src/main/java/com/alipay/remoting/rpc/RpcAddressParser.java