Jml插件获取MSN好友列表

这样获取列表还存在着一个问题，就是每当运行服务的时候他不会自动停止，运行完毕还保持开启状态，这样的话每当运行一次就会多开启一个服务，哪位朋友要是知道怎样解决请留下联系方式。

  
import java.text.SimpleDateFormat;   
import java.util.Date;   
import net.sf.jml.MsnContact;   
import net.sf.jml.MsnList;   
import net.sf.jml.MsnMessenger;   
import net.sf.jml.MsnProtocol;   
import net.sf.jml.MsnSwitchboard;   
import net.sf.jml.MsnUserStatus;   
import net.sf.jml.event.MsnAdapter;   
import net.sf.jml.impl.MsnContactImpl;   
import net.sf.jml.impl.MsnMessengerFactory;   
import net.sf.jml.message.MsnControlMessage;   
import net.sf.jml.message.MsnDatacastMessage;   
import net.sf.jml.message.MsnInstantMessage;   
import net.sf.jml.message.MsnSystemMessage;   
import net.sf.jml.message.MsnUnknownMessage;   
  
/**  
 *  
 * @author kenter  
 */  
public class Msntest extends MsnAdapter {   
  
    private MsnMessenger messenger = null;   
    private String email = null,  password = null;   
  
    /** */  
    /** Creates a new instance of Msntest */  
    public Msntest() {   
    }   
  
    public static void main(String args[])   
            throws ClassNotFoundException, InstantiationException, IllegalAccessException {   
        Msntest msn = (Msntest) Class.forName("Msntest").newInstance();//创建类实例   
        msn.setEmail("");//设置登录用户   
        msn.setPassword("");//设置密码   
        msn.start();   
    }   
  
    //打印信息   
    private static void msg(Object obj) {   
        SimpleDateFormat sdf = new SimpleDateFormat("MM-dd HH:mm");   
        if (obj instanceof Throwable) {   
            System.err.println("[" + sdf.format(new Date()) + "] " + obj);   
        } else {   
            System.out.println("[" + sdf.format(new Date()) + "] " + obj);   
        }   
    }   
  
    private void start() {   
        messenger = MsnMessengerFactory.createMsnMessenger(email, password);//创建MsnMessenger   
        messenger.setSupportedProtocol(new MsnProtocol[]{MsnProtocol.MSNP12});//设置登录协议   
        messenger.getOwner().setInitStatus(MsnUserStatus.ONLINE);//设置用户状态   
        messenger.addListener(this);//注册事件   
        messenger.login();//登录   
    }   
  
    //收到正常信息的时候发生   
    @Override  
    public void instantMessageReceived(MsnSwitchboard switchboard,   
            MsnInstantMessage message, MsnContact contact) {   
        msg(contact.getDisplayName() + "对我说：" + message.getContent());   
        //如果聊天内容为exit，退出   
        if (message.getContent().trim().equalsIgnoreCase("exit")) {   
            msg(contact.getDisplayName() + "对我发出退出指令。");   
            messenger.logout();   
            System.exit(0);   
        }   
        message.setContent("Hello,I'm robot!");//设置要发送消息内容   
        message.setFontRGBColor((int) (Math.random() * 255 * 255 * 255));//设置消息的文本颜色   
        switchboard.sendMessage(message);//发送信息   
    }   
  
    //收到系统信息的时候发生，登录时   
    @Override  
    public void systemMessageReceived(MsnMessenger messenger,   
            MsnSystemMessage message) {   
        //msg(messenger + " recv system message " + message);   
    }   
  
    //当在联系人聊天窗口获得光标并按下第一个键时发生   
    @Override  
    public void controlMessageReceived(MsnSwitchboard switchboard,   
            MsnControlMessage message, MsnContact contact) {   
        msg(contact.getFriendlyName() + "正在输入文字。");   
    }   
  
    //异常时发生   
    @Override  
    public void exceptionCaught(MsnMessenger messenger, Throwable throwable) {   
        msg(messenger + throwable.toString());   
        msg(throwable);   
    }   
  
    //登录完成时发生   
    @Override  
    public void loginCompleted(MsnMessenger messenger) {   
        msg(messenger.getOwner().getDisplayName() + "登录成功！");   
    //messenger.getOwner().setDisplayName("天天持之以恒");   
    }   
  
    //注销时发生   
    @Override  
    public void logout(MsnMessenger messenger) {   
        msg(messenger + " logout");   
    }   
  
    //收到系统广播信息时发生   
    @Override  
    public void datacastMessageReceived(MsnSwitchboard switchboard,   
            MsnDatacastMessage message, MsnContact friend) {   
        msg(switchboard + " recv datacast message " + message);   
        switchboard.sendMessage(message, false);   
    }   
  
    //收到目前不能处理的信息时发生   
    @Override  
    public void unknownMessageReceived(MsnSwitchboard switchboard,   
            MsnUnknownMessage message, MsnContact friend) {   
        //msg(switchboard + " recv unknown message " + message);   
    }   
  
    @Override  
    public void contactListInitCompleted(MsnMessenger messenger) {   
        listContacts();   
    }   
  
    /** */  
    /**  
     * 更新好友列表完成时发生  
     */  
    @Override  
    public void contactListSyncCompleted(MsnMessenger messenger) {   
        listContacts();   
    }   
  
    /** */  
    /**  
     * 关闭一个聊天窗口时发生  
     */  
    @Override  
    public void switchboardClosed(MsnSwitchboard switchboard) {   
        msg("switchboardStarted " + switchboard);   
    }   
  
    /** */  
    /**  
     * 打开一个聊天窗口时发生  
     */  
    @Override  
    public void switchboardStarted(MsnSwitchboard switchboard) {   
        msg("switchboardStarted " + switchboard);   
    }   
  
    //打印联系人   
    private void listContacts() {   
        MsnContact[] cons = messenger.getContactList().getContactsInList(MsnList.AL);   
        if (cons.length == 0) {   
            msg("空");   
        } else {   
            msg("你现在有" + cons.length + "个联系人");   
        }   
        for (int i = 0; i < cons.length; i++) {   
            String personal = ((MsnContactImpl) cons[i]).getPersonalMessage().equals("")   
                    ? "空" : ((MsnContactImpl) cons[i]).getPersonalMessage();   
            msg("用户名：" + cons[i].getDisplayName() + " 地址：" + cons[i].getEmail() + " 状态" + cons[i].getStatus() + " " + personal);   
        }   
    }   
  
    public String getEmail() {   
        return email;   
    }   
  
    public void setEmail(String email) {   
        this.email = email;   
    }   
  
    public String getPassword() {   
        return password;   
    }   
  
    public void setPassword(String password) {   
        this.password = password;   
    }   
}  

以下是代码示例附带jar包