getResource（）到运行时的文件 [英] getResource() to a file on runtime

问题描述

我在src包（int resources文件夹）下放了一些txt文件。

I put some txt files under src package (int resources folder).

但是我无法在运行时从这个资源创建一个文件。

But I can't create a file on runtime from this resource.

String path = this.getClass().getResource("/resources/file.txt").getFile();
File file = new File(path );

if (!file.exists()) {
}

UPDATE

如果我做 InputStream is = getClass（）。getResourceAsStream（/ resources / file.txt ）;

我得到了流!!

我运行我的程序来自日食。我没有在classpath中添加任何内容。

我希望我的文本文件嵌入到jar中，当我运行我的应用程序时，我想抓住这些文件并将它们复制到某个位置。

I run my program from eclipse. I didn't put in classpath anything.
I want my text files to be embedded into jar, when i run my app i want to grab those files and copy them into some location.

推荐答案

你说你正在使用eclipse，并且你将文本文件拖放到src包中。 src不是包。它只是一个文件系统目录。默认情况下，在eclipse中的Java项目中，所有源代码都存储在名为src的目录中，所有.class文件都存储在名为bin的目录中。 getClass（）。getResource（）解析为.class文件的位置。您必须将文本文件移动到bin目录中。

You said that you are using eclipse, and that you dragged and dropped your text files into the "src" package. "src" is not a package. It is simply a file system directory. By default in a Java project in eclipse all your source code is stored in a directory called "src" and all your .class files are stored in a directory called "bin". getClass().getResource() resolves to the location of your .class files. You must move the text files into the "bin" directory.

您的班级是哪个套餐？

我在默认包中写了非常相似的代码并在eclipse中运行。

I wrote very similar code to yours in the default package and ran it in eclipse.

import java.io.File;

public class ResourceTest {
    public static void main(String[] args) {
        ResourceTest rt = new ResourceTest();
        rt.openFile();
    }

    public void openFile() {
        String path = this.getClass().getResource("/resources/file.txt").getFile();
        File file = new File(path);

        System.out.println(path);
        System.out.println(file.getAbsolutePath());
        System.out.println(file.exists());
    }
}

我看到这个输出：

/C:/Users/rab29/Documents/eclipse/Overflow/bin/resources/file.txt
C:\Users\rab29\Documents\eclipse\Overflow\bin\resources\file.txt
true

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