// 读取文件内容,避免乱码,filePathAndName是文件绝对路径如c:\\1.txt

 public static String readFile(String filePathAndName)
 {
  String fileContent = "";
  try
  {
   File f = new File(filePathAndName);
   if (f.isFile() && f.exists())
   {
    InputStreamReader read = new InputStreamReader(new FileInputStream(f), "UTF-8");
    BufferedReader reader = new BufferedReader(read);
    String line;
    while ((line = reader.readLine()) != null)
    {
     fileContent += line;
    }
    read.close();
   }
  }
  catch (Exception e)
  {
   System.out.println("读取文件内容操作出错");
   e.printStackTrace();
  }
  return fileContent;
 }

// 写入文件内容,避免乱码

public static void writeFile(String filePathAndName, String fileContent)
 {
  try
  {
   File f = new File(filePathAndName);
   if (!f.exists())
   {
    f.createNewFile();
   }
   OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(f), "UTF-8");
   BufferedWriter writer = new BufferedWriter(write);
   // PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(filePathAndName)));
   // PrintWriter writer = new PrintWriter(new FileWriter(filePathAndName));
   writer.write(fileContent);
   writer.close();
  }
  catch (Exception e)
  {
   System.out.println("写文件内容操作出错");
   e.printStackTrace();
  }
 }

原帖地址:http://ccgkren.iteye.com/blog/1517423