java - NoSuchFileException 使用 File.copy

Question

尝试将图像文件从一个文件夹复制到另一个文件夹时出现以下错误。

错误信息:

java.nio.file.NoSuchFileException: C:\Users\William\Pictures\D8McXhNVUAE7VFh.jpg -> \resources\6.jpg
at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileCopy.copy(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.copy(Unknown Source)
    at java.nio.file.Files.copy(Unknown Source)
    at data.DAO.addEmployee(DAO.java:130)
    at GUI.NewUser$3.actionPerformed(NewUser.java:184)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)

我的代码为:

String sourceFile = "C:\Users\xxxxxx\Pictures\D8McXhNVUAE7VFh.jpg"
String destinationFilePath = "\\resources\\" + generatedID + ".jpg" ;
File sourceFile = new File(imageSourcePath);
File destinationFile = new File(destinationFilePath);
Path sourcePath = sourceFile.toPath();
Path destinationPath = destinationFile.toPath();
try {
          Files.copy(sourcePath, destinationPath);
} catch (IOException ex) {
           ex.printStackTrace();
}

这个问题的原因可能是什么？

Answer 1

您在 String sourceFile 和 File sourceFile 中使用了相同的变量名。请重命名其中一个。

举个例子，用这个

ex -: String sourceFile
      File file