java - 如何设置文件输入流的路径

Question

我试图使用一个 txt 文件，但我得到了这个错误“FileNotFoundException”但它是可读的并且它存在但是在 FileInputStream 线上我得到了那个错误怎么了？

        System.out.println(Files.isReadable(Paths.get("I:/Code/Coding/src/Files/" + path + ".txt")));
        System.out.println(Files.exists(Paths.get("I:/Code/Coding/src/Files/" + path + ".txt")));
        FileInputStream f1=new FileInputStream("I:/Code/Coding/src/Files/" + path + ".txt");
        reader = new ObjectInputStream(f1);


java.io.FileNotFoundException: I:\Code\Coding\src\Files\Artists.txt (The system cannot find the path specified)
    at java.io.FileInputStream.open0(Native Method)
    at java.io.FileInputStream.open(FileInputStream.java:195)
    at java.io.FileInputStream.<init>(FileInputStream.java:138)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at sample.Datebase.Server.readFiles(Server.java:70)
    at sample.Datebase.Server.run(Server.java:99)
    at sample.Datebase.Server.main(Server.java:54)
Exception in thread "main" java.lang.NullPointerException
    at sample.Datebase.Server.readFiles(Server.java:94)
    at sample.Datebase.Server.run(Server.java:99)
    at sample.Datebase.Server.main(Server.java:54)

Answer 1

我有同样的问题，我通过使用 File 类解决了它。请尝试此代码。也许你的问题会得到解决:

File file = new File("I:/Code/coding/src/Files/" + path + ".txt");
reader = new ObjectInputStream(new FileInputStream(file));
Object o = reader.readObject();