番石榴21.0及以上版本

有一个void deleterecursive (Path Path, RecursiveDeleteOption…)options)会抛出从Guava 21.0开始可用的MoreFiles类的IOException静态方法。

请参阅Javadoc文档:

public static void deleteRecursively(Path path, RecursiveDeleteOption... options) throws IOException Deletes the file or directory at the given path recursively. Deletes symbolic links, not their targets (subject to the caveat below). If an I/O exception occurs attempting to read, open or delete any file under the given directory, this method skips that file and continues. All such exceptions are collected and, after attempting to delete all files, an IOException is thrown containing those exceptions as suppressed exceptions.

你可以用:

org . apache commons。我deleteQuietly (destFile FileUtils);

删除文件，从不抛出异常。如果file是目录，请删除该目录及其所有子目录。 File.delete()和这个方法的区别是: 待删除的目录不需要为空目录。 当无法删除文件或目录时，不会抛出异常。

您应该查看Apache的commons-io。它有一个FileUtils类，可以做你想做的事情。

FileUtils.deleteDirectory(new File("directory"));

public void deleteRecursive(File path){
    File[] c = path.listFiles();
    System.out.println("Cleaning out folder:" + path.toString());
    for (File file : c){
        if (file.isDirectory()){
            System.out.println("Deleting file:" + file.toString());
            deleteRecursive(file);
            file.delete();
        } else {
            file.delete();
        }
    }
    path.delete();
}

在Guava 9之前，Guava一直支持files . deleterecursive (File)。

来自番石榴10:

弃用。该方法存在符号链接检测差和竞态条件差的问题。只有使用操作系统命令(如rm -rf或del /s)才能适当地支持此功能。这个方法计划在Guava 11.0版本中从Guava中移除。

因此，在番石榴11中没有这种方法。

下面的代码递归删除给定文件夹中的所有内容。

boolean deleteDirectory(File directoryToBeDeleted) {
    File[] allContents = directoryToBeDeleted.listFiles();
    if (allContents != null) {
        for (File file : allContents) {
            deleteDirectory(file);
        }
    }
    return directoryToBeDeleted.delete();
}