加密读文件

package com.skysz.framework.utils.security;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.util.Properties;

public class MD5Encrypt1 {

 private final static String enCoding = "utf-8";
 private static String sep = File.separator;

 private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
   "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };

 public static String byteArrayToHexString(byte[] b) {
  StringBuffer resultSb = new StringBuffer();
  for (int i = 0; i < b.length; i++) {
   resultSb.append(byteToHexString(b[i]));
  }
  return resultSb.toString();
 }

 private static String byteToHexString(byte b) {
  int n = b;
  if (n < 0) {
   n = 256 + n;
  }
  int d1 = n / 16;
  int d2 = n % 16;
  return hexDigits[d1] + hexDigits[d2];
 }

 /**
  * 对输入的源字符串进行Md5加密，返回加密后的32位字符串
  *
  * @param origin
  *            加密源字符串
  * @return
  */
 public static String encrypt(String origin) {
  String resultString = null;

  try {
   resultString = origin;
   MessageDigest md = MessageDigest.getInstance("MD5");
   resultString = byteArrayToHexString(md.digest(resultString
     .getBytes(enCoding)));
  } catch (Exception ex) {
   throw new RuntimeException(ex);
  }
  return resultString;
 }
 public static final Properties CC_M_PROS = new Properties();
 public static void main(String[] args) {
//  String encryptPwd = MD5Encrypt.encrypt("30006|20110511145326859|10001|20110511145417250|true|true|777.77|889997776665544455556|2unkonw|2unkonw|crashHJks&823()lw:,ds12@~@#@HJKiodslkfewkl3#@65k430dso9");
//  System.out.println(encryptPwd);
//  String en = "QWEQ";
//  System.out.println(MD5Encrypt.encrypt(en));
  
  try{
//   String aa = getFileContent("D:" + sep + "MD5.txt");
   InputStreamReader isr = new InputStreamReader(new FileInputStream("D:" + sep + "MD5.txt"), "utf-8");
   BufferedReader bufReader = new BufferedReader(isr);
   
   while (bufReader.ready()) {
    // 1. 得到每一条数据
    String dataLine = bufReader.readLine();
    String encryptPwd = MD5Encrypt.encrypt(dataLine);
    System.out.println(encryptPwd);
   }
  }catch(Exception e){
   e.printStackTrace();
  }
 }
 private static String getFileContent(String filePath) throws Exception {
  StringBuffer result = new StringBuffer();
  BufferedReader bufReader = null;
  FileReader fileReader = null;
  fileReader = new FileReader(filePath);
  bufReader = new BufferedReader(fileReader);
  while (bufReader.ready()) {
   result.append(bufReader.readLine());
  }
  return result.toString();
 }
}