Java中的FileIterator？

Question

您知道在哪里可以找到在Java中实现 FileIterator （或类似内容）的库吗？让它像以下（未经检查的代码）一样工作会很高兴：

Iterator it = new FileIterator();
it.addDirectory("../some-dir/");
it.addInclude("**/*.java");
it.addExclude(".svn/**");
while (it.hasNext()) {
  File f = it.next();
  System.out.println("File found: " + f);
}

在Maven FileSet中实现了类似的功能，但我不认为将Maven JAR添加到我的项目中是个好主意：）

Answer 1

查看org.apache.commons.io.FileUtils.iterateFiles(..)

 Iterator<File> iterateFiles(File directory,
                                          String[] extensions,
                                          boolean recursive)    

Answer 2

您可以在Commons-IO中使用DirectoryWalker，例如：

public class FileCleaner extends DirectoryWalker {

    public FileCleaner() {
      super();
    }

    public List clean(File startDirectory) {
      List results = new ArrayList();
      walk(startDirectory, results);
      return results;
    }

    protected boolean handleDirectory(File directory, int depth, Collection results) {
      // delete svn directories and then skip
      if (".svn".equals(directory.getName())) {
        directory.delete();
        return false;
      } else {
        return true;
      }

    }

    protected void handleFile(File file, int depth, Collection results) {
      // delete file and add to list of deleted
      file.delete();
      results.add(file);
    }
  }

其他示例可在http://commons.apache.org/io/api-2.0/index.html?org/apache/commons/io/FileUtils.html

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