Java 文件复制 - 如何将输入文件Backup/copy 复制到其他目标位置？

Question

想要copy/backup文件到目标文件夹，然后再执行任何任务。 (jdk-1.7)

 /*Input file path taken from properties file as string is :inputFile
where-in inputFile is :C:\Project\input\filename.txt
Destination file path taken from properties file as string is : 
archiveFolderPath */

  //Existing code : in main
if (inputFile != null) {
readTextFile(new File(inputFile)); }

// in readTextFile method
BufferedReader br = new BufferedReader(new FileReader(filename));

我尝试使用以下程序::但出现错误：错误：： Files 类型中的方法 copy(InputStream, OutputStream) 不是适用于参数 (String, String)

//Calling method in main::
copyFiles(inputFile, archiveFolderPath);


//Copy method :
private static void copyFiles (String inputFile, String 
  archiveFolderPath) throws IOException {
    Files.copy(inputFile, archiveFolderPath); }

请提出替代解决方案，因为“文件不适用于参数（字符串，字符串）" .

Answer 1

您可以先复制文件，然后再对其执行读取或写入操作。示例：-

Path origin = Paths.get("/home/fm/source.txt");
Path destination = Paths.get("/home/fm/source.bak");

//Copy source.txt to source.bak
Files.copy(origin, destination, StandardCopyOption.COPY_ATTRIBUTES, StandardCopyOption.REPLACE_EXISTING);

有关所有 copy 方法的详细信息，请参阅 Files javadoc。他们中的一些人期待 CopyOption 作为参数。根据节目要求选择合适的CopyOption。

https://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html https://docs.oracle.com/javase/7/docs/api/java/nio/file/StandardCopyOption.html#COPY_ATTRIBUTES

Java 文件复制 - 如何将输入文件Backup/copy 复制到其他目标位置？

Java File Copy -How to Backup/copy the input file to other destination location?

java

filereader

bufferedreader

file-copying