试图在JFrame中显示URL图像

Question

尝试在JFrame窗口中显示URL图像。如果这可以正常工作，程序运行时，应该打开一个窗口显示图像。尝试尝试URL和硬盘路径。

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;

 class ImageInFrame {
    public static void main(String[] args) throws IOException {
    String path = "http://chart.finance.yahoo.com/z?s=GOOG&t=6m&q=l";
    URL url = new URL(path);
    BufferedImage image = ImageIO.read(url);
    JLabel label = new JLabel(new ImageIcon(image));
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(label);
    f.pack();
    f.setLocation(200,200);
    f.setVisible(true);
  }
  }

编译得很好，但无法运行。我一直在试验一些YahooFinance数据，因为它的定制很有趣。希望有人能提供帮助。干杯。

Answer 1

对我来说很好......

除了您没有处理异常（可能对诊断有用）并且没有真正在EDT中加载程序这一事实外，它似乎工作得很好......

public class TestURLImage {

    public static void main(String[] args) {
        new TestURLImage();
    }

    public TestURLImage() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                try {
                    String path = "http://chart.finance.yahoo.com/z?s=GOOG&t=6m&q=l";
                    System.out.println("Get Image from " + path);
                    URL url = new URL(path);
                    BufferedImage image = ImageIO.read(url);
                    System.out.println("Load image into frame...");
                    JLabel label = new JLabel(new ImageIcon(image));
                    JFrame f = new JFrame();
                    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    f.getContentPane().add(label);
                    f.pack();
                    f.setLocation(200, 200);
                    f.setVisible(true);
                } catch (Exception exp) {
                    exp.printStackTrace();
                }

            }
        });
    }
}