imageio.IIOException：无法读取输入文件 [英] imageio.IIOException: Can't read input file

问题描述

我一周前开始使用Java，现在我想在窗口中插入一个图像。
无论我尝试什么，我都会在Eclipse中继续这样做：
javax.imageio.IIOException：无法读取输入文件！

I've started Java a week ago, and now I would like to insert an image into my window. Whatever I try I keep having this in Eclipse: javax.imageio.IIOException: Can't read input file!

package graphics;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import src.Common;

public class Window extends JFrame
{
public class Panel extends JPanel
{

    public void paintComponent(Graphics g)
    {
        Image img; 
        try 
        {
        img = ImageIO.read(new File("/logo.jpg"));
        g.drawImage(img, 0, 0, this);
        } 
        catch (IOException e) 
        {
        e.printStackTrace();
        }

    }
}

public Window(String title, int width, int height)
{
    this.setTitle(title);
    this.setSize(width, height);
    this.setLocationRelativeTo(null);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setContentPane(new Panel()); 
    this.setVisible(true);
}

}

我认为代码非常自我解释。
我尝试用这个解决问题，< a href =https://stackoverflow.com/questions/13130982/imageio-cant-read-input-file?rq=1>这个，以及那个。

I think the code is pretty self-explaining. I tried to solve the problem with this, this, and that .

我想做的是一个桌面程序，我的源存储如下：
training / src / graphics / Window
training / src / src / main

What I'm trying to do is a desktop program, and my sources are stored like that : training/src/graphics/Window training/src/src/main

我做了把我想要阅读的图像放在每个文件夹中，但仍然遇到问题：/

I did put the image I want to read in every folder, and still getting the issue :/

我做错了什么？

编辑终于解决了，这里答案

nIcE cOw给了我链接有帮助。
所以我确实把我的图像放到了一个文件夹中，并改变了访问它们的方式，如链接中所述。

nIcE cOw gave me the link that helped. So I did put my images into a folder, and change the way to access to them, as described in the link.

getClass().getResource("/images/yourImageName.extension");

推荐答案

您是否尝试过使用 new文件（logo.jpg）; （没有前导/）？

Have you tried using new File("logo.jpg"); (without the leading /)?

你确定，logo.jpg被复制到你的输出？ （某些IDE不会将源目录中的每个文件复制到输出（或目标）目录。）

And are you sure, the logo.jpg is copied to your output? (Some IDEs don't copy every file from your source-directories to your output (or target) directories.)

/src
|-> Window.java
|-> Logo.jpg

变为

/out
|-> Window.class

（请注意，IDE /编译器不会将图像复制到输出目录中所以编译后的代码找不到图像 - 尽管你确实指定了正确的路径）

(Note that the IDE/compiler does not copy the image to your output-directory and so the compiled code cannot find the image - allthough you did specify the correct path)

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