Commons项目中用来处理IO的一些工具类包,下面是一些示例代码:
//直接将IO流转成字符串 InputStream in = new URL( "http://jakarta.apache.org" ).openStream(); try { System.out.println( IOUtils.toString( in ) ); } finally { IOUtils.closeQuietly(in); } //读取文本文件的所有行 File file = new File("/commons/io/project.properties"); List lines = FileUtils.readLines(file, "UTF-8"); //路径处理 String filename = "C:/commons/io/../lang/project.xml"; String normalized = FilenameUtils.normalize(filename); // result is "C:/commons/lang/project.xml" //获取目录空间 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); }
JavaDoc:http://tool.oschina.net/apidocs/apidoc?api=commons-io