我试图使用TrayIcon在Windows 8.1中显示基本的系统任务栏消息。但是,当我运行该程序时,没有任何显示。这是代码:

package alert1;

import java.net.*;
import java.io.*;
import java.util.*;
import java.awt.*;
import javax.imageio.*;

public class Main {
    public static void main(String[] args) throws IOException {
        URL gfl = new URL("http://gflclan.com/GFL/serverlist.php");
        BufferedReader in = new BufferedReader(new InputStreamReader(gfl.openStream()));

        Image img = ImageIO.read(new File("gflicon.jpg"));
        TrayIcon tray = new TrayIcon(img);

        System.out.println("Enter name of map: ");
        Scanner scan = new Scanner(System.in); //retrieves name of map from IO
        String str = scan.nextLine();
        scan.close();

                            //pL = previousLine
        String pL1 = null;  //line which contains the server name
        String pL2 = null;
        String pL3 = null;
        String pL4 = null;  //line which contains the server IP
        String pL5 = null;
        String currentLine;
        while ((currentLine = in.readLine()) != null)
            if(currentLine.contains(str)){
                String pL1fixed = pL1.replaceAll("\\<.*?\\> ?", "").trim(); //removes HTML/CSS formatting
                String pL4fixed = pL4.replaceAll("\\<.*?\\> ?", "").trim();
                System.out.println("Server Name: " + pL1fixed);
                System.out.println("Server IP: " + pL4fixed);
                tray.displayMessage("Server Found", "[Server Info Here]", TrayIcon.MessageType.WARNING);
            } else {
                pL1 = pL2; //updates stream's line history
                pL2 = pL3;
                pL3 = pL4;
                pL4 = pL5;
                pL5 = currentLine;
            }
        in.close();
    }
}


我有什么想念的吗?据我所知,我有TrayIcon对象,并在其上调用了displayMessage,所以我不知道为什么它没有显示。这是我的第一个Java项目,也是我第一次处理图像,因此如果这段代码非常业余,请原谅我。

最佳答案

首先,看看How to Use the System TrayJavaDocs for SystemTray,其中有许多示例

基本上,您没有将TrayIcon添加到任何内容

摘自SystemTray JavaDocs的示例

if (SystemTray.isSupported()) {
     SystemTray tray = SystemTray.getSystemTray();
     Image image = ...;
     trayIcon = new TrayIcon(image, "Tray Demo");
     try {
         tray.add(trayIcon);
     } catch (AWTException e) {
         System.err.println(e);
     }
}


其次,您实际上不应该将基于控制台的程序与GUI混合使用,它们具有不同的工作方式,这些方式通常彼此不兼容。

10-06 09:58