从与.jar文件位于同一文件夹的文件中读取 [英] read from a file that is in the same folder as the .jar file

问题描述

有没有办法从与.jar文件位于同一文件夹的文件中读取？我正在尝试创建一个java程序，当我上交我的作业时必须从文件中读取。我转过来后，我不知道文件或程序将保存在哪里，所以我不认为我可以对保存文件的目录进行编码。这可能吗？问题是我必须将文件上传到CSX主机服务器，这是一个Linux服务器并从那里运行它。如果我在文件之前没有放置路径，它只会搜索当前的文件夹位置？

Is there a way to read from a file that is in the same folder as the .jar file? I am trying to create a java program that has to read from a file when I turn in my assignment. I do not know where the file or program will be held once I turn it over so I dont think I can encode the directory of the held file. Is this possible? The problem is that i have to upload the file to a CSX hosts server which is a linux server and run it from there. If I dont put a path before the file will it just search its current folder location?

推荐答案

如前所述注释，这仅适用于从jar所在的目录运行命令。

（在桌面应用程序的上下文中）

要访问 jar 的当前目录中的文件，您的路径该文件前面应加一个点。示例：

(In the context of a desktop application)
To access a file that's in the current directory of the jar, your path to the file should be preceded by a dot. Example:

String path = "./properties.txt";
FileInputStream fis = new FileInputStream(path);
BufferedReader in = new BufferedReader(new InputStreamReader(fis));
// Read the file contents...

在本例中，有一个文本名为 properties.txt 的文件与 jar 在同一目录中。

此文件将由 jar 中包含的程序读取。


编辑：你说文件名不会更改，这个答案适用，因为您事先知道名称，当然，如果您更喜欢硬编码。

In this example, there is a text file called properties.txt in the same directory as the jar.
This file will be read by the program contained in the jar.

you said the filename would not change, and this answer applies given that you know the name beforehand, of course, should you prefer to hardcode it.

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