Commons-IO例子二

public static void main(String[] args) throws IOException {
// org.apache.commons.io.comparator.PathFileComparator
// org.apache.commons.io.comparator.LastModifiedFileComparator
// org.apache.commons.io.comparator.SizeFileComparator

// org.apache.commons.io.filefilter.SuffixFileFilter

// org.apache.commons.io.input.NullInputStream
// org.apache.commons.io.input.AutoCloseInputStream

// org.apache.commons.io.FilenameUtils.getExtension(filename)
// org.apache.commons.io.FilenameUtils.removeExtension(filename)
// org.apache.commons.io.FilenameUtils.getFullPathNoEndSeparator(filename)
// org.apache.commons.io.FilenameUtils.indexOfExtension(filename)

long f = org.apache.commons.io.FileSystemUtils.freeSpaceKb("c:");
System.out.println(f);

//org.apache.commons.io.FileSystemUtils里面有个演示了正确执行 cmd的方式，List performCommand(String[] cmdAttribs, int max) throws IOException {
}
累了，去[url=http://www.diy567.com]读意优[/url]休息一下下,QQ空间，美文，非主流，网络日记，搞笑短信，祝福短信，热门短信，有意思啊
public static void test_FileUtils() throws IOException {
long begin = System.currentTimeMillis();
// String content = org.apache.commons.io.FileUtils.readFileToString(new File("c:/a.txt"), "UTF-8");

// org.apache.commons.io.FileUtils.writeByteArrayToFile(file, data)
// org.apache.commons.io.FileUtils.cleanDirectory(arg0)
// org.apache.commons.io.FileUtils.copyDirectory(srcDir, destDir)
// org.apache.commons.io.FileUtils.copyURLToFile(arg0, arg1)
// org.apache.commons.io.FileUtils.copyFileToDirectory(srcFile, destDir)
// org.apache.commons.io.FileUtils.lineIterator(file)
// org.apache.commons.io.FileUtils.moveDirectory(srcDir, destDir)
// org.apache.commons.io.FileUtils.moveFile(srcFile, destFile)
//设置最后修改时间为当前时间
// org.apache.commons.io.FileUtils.touch(arg0)
// org.apache.commons.io.FileUtils.writeLines(file, lines)
// org.apache.commons.io.FileUtils.writeStringToFile(file, data, encoding)

//第一次58秒，第二次6s
long dirsize = org.apache.commons.io.FileUtils.sizeOfDirectory(new File("I:/文档 照片/照片"));

long end = System.currentTimeMillis();
System.out.println(dirsize + " " + ((end – begin)/1000) + "s");





FileUtils.checksumCRC32(file);
System.out.println(FileUtils.byteCountToDisplaySize(584235));//显示为多少M或多少K
//FileUtils.contentEquals(file1, file2)
FileUtils.cleanDirectory(directory);
FileUtils.writeStringToFile(file, data, encoding);

File destination=new File("c:/new.html");
URL source = new URL("http://news.baidu.com/");
FileUtils.copyURLToFile(source, destination);

FileUtils.isFileNewer(file, date);
FileUtils.isFileOlder(file, reference);
FileUtils.isFileOlder(file, timeMillis);
FileUtils.iterateFiles(directory, fileFilter, dirFilter);

LineIterator i = FileUtils.lineIterator(new File("c:/abcd.txt"));
while(i.hasNext()){
System.out.println(i.nextLine());
}

FileUtils.listFiles(directory, extensions, recursive);
FileUtils.listFiles(directory, fileFilter, dirFilter);
FileUtils.readFileToString(file);
System.out.println(FileUtils.sizeOfDirectory(new File("E:/photo")));//累计法得
System.out.println(FileSystemUtils.freeSpaceKb("E:")+"k");
System.out.println(freeSpaceWindows("E:"));
}