Java 从 /src/main/resources/ 读取文件
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Read file from /src/main/resources/
提问by Tr?umerei
I am trying to do a web application and have a problem: I don't know how to open a text file with Java that is saved in the resource folder:
我正在尝试做一个 web 应用程序，但有一个问题：我不知道如何用 Java 打开一个保存在资源文件夹中的文本文件：
String relativeWebPath ="/src/main/resources/words.txt"; //Import der des Textdoumentes
String absoluteDiskPath = getServletContext().getRealPath(relativeWebPath);
File f = new File(absoluteDiskPath);
(The file words.txt)
（文件words.txt）
As you can see on the image I am trying to access words.txt but it isn't working. Any ideas?
正如你在图片上看到的，我试图访问 words.txt 但它不起作用。有任何想法吗？
回答by Bishan
Try this.
尝试这个。
InputStream is = getClass().getClassLoader()
.getResourceAsStream("/words.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(is));
回答by Do Nhu Vy
For best practice, and avoid these problems, put text file (words.txt) to WEB_INF folder (this is secure folder for resources). Then:
为了获得最佳实践并避免这些问题，请将文本文件 ( words.txt)放入WEB_INF 文件夹（这是资源的安全文件夹）。然后：
ServletContext context = getContext();
InputStream resourceContent = context.getResourceAsStream("/WEB-INF/words.txt");
Reference: https://stackoverflow.com/a/4342095/3728901
回答by e18r
Use this code to find the path to the file you want to open.
使用此代码查找要打开的文件的路径。
import java.net.URL;
[...]
URL url = this.getClass().getResource("/words.txt");
String absoluteDiskPath = url.getPath();
回答by Akshay Chopra
If you want to access in some other class, like you have a utility package and in that, you have a ReadFileUtil.java class which opens and reads the file, you can do it in the following way:
如果你想在其他类中访问，比如你有一个实用程序包，你有一个 ReadFileUtil.java 类来打开和读取文件，你可以通过以下方式进行：
public class ReadFileUtil {
URL url = ReadFileUtil.class.getResource("/"+yourFileName);
File file = new File(url.getPath());
}
