我有这样的代码:如何从文件正确创建BufferedImage?
package test;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
public class SwingSandbox {
public static void main(String[] args) throws IOException {
JFrame frame = buildFrame();
final BufferedImage image = ImageIO.read(new File("C:\\Projects\\Test\\src\\test\\InterestCalcGraphic.jpg"));
JPanel pane = new JPanel() {
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(image, 0, 0, null);
}
};
frame.add(pane);
}
private static JFrame buildFrame() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setSize(200, 200);
frame.setVisible(true);
return frame;
}
}
当我运行它,我得到这个错误信息:
Exception in thread "main" javax.imageio.IIOException: Can't read input file!
at javax.imageio.ImageIO.read(ImageIO.java:1301)
at test.SwingSandbox.main(SwingSandbox.java:17)
错误信息让我相信,我的文件路径不正确,但形象存储在我的文件目录下的Test - src - test下。我究竟做错了什么?
可能的重复http://stackoverflow.com/questions/5713096/javax-imageio-iioexception-for-apparently-no-reason –
图像无法读取出于某种原因,也许它不存在或不支持的图像格式 – MadProgrammer
它存在,因为它显示在文件目录中,并且不支持jpgs? –