简单的写数据到txt文件

public void writeData2Txt(String content) {
　　 //存放文件的目录
    String fileDir = ServletActionContext.getServletContext().getRealPath("D:/file/");
　　 //简单的生成文件名
    String fileName =new  SimpleDateFormat("yyyyMMddHHmmsszzz").format(new Date())+".txt";
    File txtFile= new File(fileDir,fileName);
    BufferedReader bufferedReader = null; 
    BufferedWriter bufferedWriter = null; 
    try { 
         bufferedReader = new BufferedReader(new StringReader(content)); 
         bufferedWriter = new BufferedWriter(new FileWriter(txtFile)); 
         char buf[] = new char[1024];         //字符缓冲区 
         　   int len; 
         while ((len = bufferedReader.read(buf)) != -1) { 
             bufferedWriter.write(buf, 0, len); 
         } 
            
    } catch (IOException e) { 
         e.printStackTrace(); 
    } finally {
         try {
            bufferedWriter.flush();
            bufferedWriter.close();
            bufferedReader.close(); 
           
         } catch (IOException e) {
            e.printStackTrace();
         } 
    }
        
       
}