java URI路径不是绝对异常java（不是android）
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URI path not absolute exception java(not android)
提问by Jürgen K.
I have the following piece of source code
我有以下源代码
import java.net.URI;
import java.net.URISyntaxException;
File file = new File("pic.png");
BufferedImage image = ImageIO.read(file);
String string = "pic.png";
//the code works fine until here
URI path = new URI(string);
File f = new File(path);
ColorProcessor image = new ColorProcessor(ImageIO.read(f));
So the path that the File gets is correct. Image is buffered correctly also. Now my problem is that i'm getting the following exception
所以File获取的路径是正确的。图像也被正确缓冲。现在我的问题是我收到以下异常
Exception in thread "main" java.lang.IllegalArgumentException: URI is not absolute
at java.io.File.<init>(Unknown Source)
Why is my path not absolute?And how do i do it right?
为什么我的路径不是绝对的？我该怎么做？
If i change the path like this:
如果我像这样改变路径：
String string = "C:'\'Users'\'Jurgen'\'newFile'\'myProject'\'pic.png";
Also tried like this
也试过这样
String string = "C:/Users/Jurgen/newFile/myProject/pic.png";
Then i get a new exception
然后我得到一个新的例外
Exception in thread "main" java.lang.IllegalArgumentException: URI is not hierarchical
at java.io.File.<init>(Unknown Source)
P.S. not working with android packages for uri
PS 不适用于 uri 的 android 包
Thanks in advance=)
提前致谢=)
采纳答案by Stanislav
You are trying to create uniform resource identifier, but the name should follow the url conventions. This means, that it's necessary to provide a scheme (take a look here, to see all available schemes). So, in your case, you have to create the URI with string, like file:/pic.pngor may be some other scheme.
您正在尝试创建统一资源标识符，但名称应遵循url 约定。这意味着，有必要提供一个方案（看这里，查看所有可用的方案）。因此，在您的情况下，您必须使用字符串创建 URI，例如file:/pic.png或可能是其他一些方案。
As for your full path, it could be done like:
至于您的完整路径，可以这样做：
String string = "file:/C:/Users/Jurgen/newFile/myProject/pic.png";
