Apache Commons IO 2.1 發布

Commons項目中用來處理IO的一些工具類包，下面是一些示例代碼：

//直接將IO流轉成字符串
 InputStream in = new URL( "http://jakarta.apache.org" ).openStream();
 try {
   System.out.println( IOUtils.toString( in ) );
 } finally {
   IOUtils.closeQuietly(in);
 }
//讀取文本文件的所有行
 File file = new File("/commons/io/project.properties");
 List lines = FileUtils.readLines(file, "UTF-8");
//路徑處理
 String filename = "C:/commons/io/../lang/project.xml";
 String normalized = FilenameUtils.normalize(filename);
 // result is "C:/commons/lang/project.xml"
//獲取目錄空間
 long freeSpace = FileSystemUtils.freeSpace("C:/"); 
//打印文件的所有行
 LineIterator it = FileUtils.lineIterator(file, "UTF-8");
 try {
   while (it.hasNext()) {
     String line = it.nextLine();
     /// do something with line
   }
 } finally {
   LineIterator.closeQuietly(iterator);
 }

Apache Commons IO 2.1 發布了，這是從 2.0.1 版本直接升級，包括7個新特性以及一些bug修復。

新特性：

o Use standard Maven directory layout
o Add IOUtils API toString for URL and URI to get contents
o Add API FileUtils.copyFile(File input, OutputStream output)
o FileAlterationObserver has no getter for FileFilter
o Add FileUtils.getFile API with varargs parameter
o Add new APPEND parameter for writing string into files
o Add new read method "toByteArray" to handle InputStream with known size.

修復的bug：

o Dubious use of mkdirs() return code
o ReaderInputStream enters infinite loop when it encounters an unmappable character
o FileUtils.moveFile() JavaDoc should specify FileExistsException thrown
o ClassLoaderObjectInputStream does not handle Proxy classes
o Tailer returning partial lines when reaching EOF before EOL
o FileUtils.copyFile() throws IOException when copying large files to a shared directory (on Windows)
o FileSystemUtils.freeSpaceKb throws exception for Windows volumes with no visible files.

下載地址：http://commons.apache.org/io/download_io.cgi