标签：string java读取 title sys tail str 知识 target put
原文：http://blog.csdn.net/k21325/article/details/53886160
小文件当然可以直接读取所有，然后放到内存中，但是当文件很大的时候，这个方法就行不通了，内存不是这么玩的~~
那么,下面是解决方法:
1.Java底层:调用java的java.util.Scanner类扫描文件内容,一行一行，连续读取
FileInputStream inputStream = null; Scanner sc = null; try { inputStream = new FileInputStream(path); sc = new Scanner(inputStream, "UTF-8"); while (sc.hasNextLine()) { String line = sc.nextLine(); // System.out.println(line); } // note that Scanner suppresses exceptions if (sc.ioException() != null) { throw sc.ioException(); } } finally { if (inputStream != null) { inputStream.close(); } if (sc != null) { sc.close(); } }
2.commons-io
LineIterator it = FileUtils.lineIterator(theFile, "UTF-8"); try { while (it.hasNext()) { String line = it.nextLine(); // do something with line } } finally { LineIterator.closeQuietly(it); }
标签：string java读取 title sys tail str 知识 target put
原文地址：http://www.cnblogs.com/shihaiming/p/6978528.html
