利用Java读取二进制文件实例详解

`-- networkProj |-- data |-- networkProj.iml |-- out `-- src

private static void convertFiles() { File folder = new File("data"); // data folder log("--------- Read little-endian data from bin file ---------"); if (!folder.exists()) {  log("folder is not exist!");  return; } File outputFolder = new File(folder.getAbsolutePath() + File.separator + "output"); if (!outputFolder.exists()) {  boolean newOutput = outputFolder.mkdir();  log("New output folder " + newOutput); } File[] files = folder.listFiles(); if (files != null) {  log("folder is " + folder.getAbsolutePath());  for (File f : files) {   log("/t" + f.getName());  } } else {  log("Nothing in this folder");  return; } for (File currentFile : files) {  if (!currentFile.isFile()) {   return;  }  String fileName = currentFile.getName();  fileName = fileName.substring(0, fileName.length() - 4); // delete suffix  File csvFile = new File(outputFolder.getAbsolutePath() + File.separator + fileName + ".csv");  if (csvFile.exists()) {   boolean deRes = csvFile.delete();   log("Delete old csv: " + deRes);  }  byte[] readBytes = new byte[512];  try {   boolean newCsv = csvFile.createNewFile();   log(csvFile.getAbsolutePath() + " " + newCsv);   FileOutputStream csvFos = new FileOutputStream(csvFile);   InputStream in = new FileInputStream(currentFile);   while (in.read(readBytes) != -1) {    int[] csvData = convertBytesToInts(readBytes);    for (int d : csvData) {     csvFos.write(String.valueOf(d).getBytes());     csvFos.write("/n".getBytes());    }   }   csvFos.flush();   csvFos.close();  } catch (Exception e) {   e.printStackTrace();  } }}// little-endian; 2 bytes -> 1 intprivate static int[] convertBytesToInts(byte[] inputData) { int[] rawData = new int[inputData.length / 2]; int rawIndex = 0; for (int i = 0; i < inputData.length; i += 2) {  int raw = (0xff & inputData[i + 1]) * 256 + (0xff & inputData[i]);  if (raw >= 32768) {   raw -= 65536;  }  rawData[rawIndex] = raw;  rawIndex++; } return rawData;}private static void log(String l) { System.out.println(l);}

--------- Read little-endian data from bin file ---------New output folder truefolder is G:/javaProj/networkProj/data data20170215_180621.bin outputG:/javaProj/networkProj/data/output/data20170215_180621.csv true