在不同位置复制和重命名文件 [英] Copy and rename file on different location

问题描述

我有一个文件 example.tar.gz ，我需要将其复制到其他名称不同的位置例如 _test.tar.gz .我尝试过

I have one file example.tar.gz and I need to copy it to another location with different name example _test.tar.gz. I have tried with

private void copyFile(File srcFile, File destFile) throws IOException {

    InputStream oInStream = new FileInputStream(srcFile);
    OutputStream oOutStream = new FileOutputStream(destFile);

    // Transfer bytes from in to out
    byte[] oBytes = new byte[1024];
    int nLength;

    BufferedInputStream oBuffInputStream = new BufferedInputStream(oInStream);
    while((nLength = oBuffInputStream.read(oBytes)) > 0) {
        oOutStream.write(oBytes, 0, nLength);
    }
    oInStream.close();
    oOutStream.close();
}

其中

String from_path = new File("example.tar.gz");
File source = new File(from_path);

File destination = new File("/temp/example_test.tar.gz");
if(!destination.exists())
    destination.createNewFile();

然后

copyFile(source, destination);

它不起作用.路径正确.它打印该文件存在.有人可以帮我吗?

It doesn't work. The path is correct. It prints that the file exists. Can anybody help me?

推荐答案

为什么要重新发明轮子，只需使用

Why to reinvent the wheel, just use FileUtils.copyFile(File srcFile, File destFile) , this will handle many scenarios for you

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