Skype4Java 中的重复消息请求

Duplicate message requests in Skype4Java

我有这段代码,它可以工作,但有时它会向此人发送 2 条消息。

Skype.addChatMessageListener(new ChatMessageAdapter() {
    public void chatMessageReceived(ChatMessage received) throws SkypeException {
        if (received.getContent().equals("!server")) {
            // Sender
            received.getSender().send("Comando Em Manutenção");
        }
    })

如何解决这个错误?

这似乎是 known issue in Skype4Java。 另外,根据 author's comment, the project has been abandoned, but there is another one based on it: Skype Java API.

来自自述文件:

This project is a mavenization and release of Skype4Java with several bug fixes.