java - 将实时数据写入文件

Question

如何用Java将实时数据写入文件？

我正在尝试将实时 Twitter feed 获取到文本文件。这是我编写的代码:

public void onStatus(Status status) 
{
   User user = status.getUser();
   BufferedWriter bufferedWriter = null;
   try
   {
      bufferedWriter = new BufferedWriter(new FileWriter("c:\\twitterDumponFile.txt"));
      String username = status.getUser().getScreenName();
      bufferedWriter.write(username);

      String profileLocation = user.getLocation();
      bufferedWriter.write(profileLocation);

      String content = status.getText();
      bufferedWriter.write(content);
      bufferedWriter.newLine();

   }
   catch (FileNotFoundException ex) 
   {
      ex.printStackTrace();
   } 
   catch (IOException ex) 
   {
      ex.printStackTrace();
   } 
   finally
   {
      //Closing the BufferedWriter
      try
      {
         if (bufferedWriter != null) 
         {
            bufferedWriter.flush();
            bufferedWriter.close();
         }
      } 
      catch (IOException ex) 
      {
         ex.printStackTrace();
      }
   }
} 

当我打开文件 twitterDumponFile.txt 时，它包含一行数据。每次我打开它时，它都有不同的数据，但只有一行，它不会将新数据附加到文件中。

请帮助我解决错误的地方。

Answer 1

您需要以追加模式打开FileWriter。

替换

bufferedWriter = new BufferedWriter(new FileWriter("c:\\twitterDumponFile.txt"));

由

bufferedWriter = new BufferedWriter(new FileWriter("c:\\twitterDumponFile.txt", true));