我已经记下了大部分内容,但当我尝试复制时,没有复制。它会像应该做的那样在指定的目录中找到文件,我认为复制函数会执行,但指定的目录下没有更多的文件。感谢您的帮助。我做了一个printf函数,这里没有显示。谢谢
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.Scanner;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.FileUtils;
import static java.nio.file.StandardCopyOption.*;
public class Stuff {
static String path, oldExtn, newExtn;
static Boolean delOrig = false;
private static void getPathStuff() {
printf("Please enter the desired pathn");
Scanner in = new Scanner(System.in);
path = in.next();
printf("Now enter the file extension to replacen");
oldExtn = in.next();
printf("Now enter the file extension to replace withn");
newExtn = in.next();
in.close();
}
public static void main(String[] args) {
getPathStuff();
File folder = new File(path);
printf("folder = %sn", folder.getPath());
for (final File fileEntry : folder.listFiles()) {
if (fileEntry.getName().endsWith(oldExtn)) {
printf(fileEntry.getName() + "n");
File newFile = new File(FilenameUtils.getBaseName(fileEntry
.getName() + newExtn));
try {
printf("fileEntry = %sn", fileEntry.toPath().toString());
Files.copy(fileEntry.toPath(), newFile.toPath(),
REPLACE_EXISTING);
} catch (IOException e) {
System.err.printf("Exception");
}
}
}
}
}`
问题是创建的新文件没有完整路径(只有文件名)。所以你的新文件是创建的-只是不是你期望的地方。。。
你可以看到,如果你更换,它会起作用
File newFile = new File(FilenameUtils.getBaseName(fileEntry
.getName() + newExtn));
带有:
File newFile = new File(fileEntry.getAbsolutePath()
.substring(0,
fileEntry.getAbsolutePath()
.lastIndexOf(".")+1) + newExtn);