java 在java中从项目的文件夹加载图像
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load an image from project's folder in java
提问by Aimad Majdou
I want to load an image which is in my projet folder as : /src/images/URL.jpg
我想加载我的 projet 文件夹中的图像： /src/images/URL.jpg
I tried this code :
我试过这个代码：
BufferedImage image = ImageIO.read(getClass().getResource("/images/URL.jpg"));
But I'm getting this error :
但我收到此错误：
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: input == null!
at javax.imageio.ImageIO.read(ImageIO.java:1388)
at Personel.PersonnelMainForm.print(PersonnelMainForm.java:464)
How can I solve this problem ?
我怎么解决这个问题 ？
回答by Andrew Cumming
From personal experience I use:
根据个人经验，我使用：
BufferedImage image = ImageIO.read(getClass().getResourceAsStream("/images/image.jpg"));
I get the resource as a stream and that seems to work fine for me.
我以流的形式获取资源，这对我来说似乎很好用。
回答by Humungus
You can try thisversion of read, which takes File as an argument.
你可以试试这个版本的read，它以 File 作为参数。
BufferedImage image = ImageIO.read(new File("path"));
where pathis the path to you file, absolute or relative as you need.
path您的文件路径在哪里，根据需要是绝对路径还是相对路径。
Another option, if you really want to load it as a resource, would be editing your classpath, as per this question.
另一种选择，如果你真的想将它作为资源加载，将根据这个问题编辑你的类路径。
回答by albgorski
I suppose you have a java class in the package. You have to move up so many times as package levels. Example: Java class is defined as org.test.MyClass you have to go up twice (../../) to be in the main directory.
我想你在包中有一个 java 类。您必须多次提升包裹级别。示例：Java 类定义为 org.test.MyClass 你必须上两次 (../../) 才能在主目录中。
