奇怪的字符當從文本中讀取srt文件

Question

我嘗試讀取文件到字符串，我試圖使編碼爲UTF-8，但仍然失敗，它會返回輸出中的一些奇怪的字符。

這裏是我的功能來讀取文件：

private static String readFile(String path, boolean isRaw) throws UnsupportedEncodingException, FileNotFoundException{ 
    File fileDir = new File(path); 
try{  
    BufferedReader in = new BufferedReader(
     new InputStreamReader(
        new FileInputStream(fileDir), "UTF-8")); 

    String str; 

    while ((str = in.readLine()) != null) { 
     System.out.println(str); 
    } 

      in.close(); 
      return str; 
    } 
    catch (UnsupportedEncodingException e) 
    { 
     System.out.println(e.getMessage()); 
    } 
    catch (IOException e) 
    { 
     System.out.println(e.getMessage()); 
    } 
    catch (Exception e) 
    { 
     System.out.println(e.getMessage()); 
    } 
    return null; 
} 

第一線的輸出是：1

這裏是我的測試文件https://www.dropbox.com/s/2linqmdoni77e5b/How.to.Get.Away.with.Murder.S01E01.720p.HDTV.X264-DIMENSION.srt?dl=0

在此先感謝。

Answer 1

該文件以UTF16-LE編碼，並有Byte order mark這有助於確定編碼。使用"UTF-16LE"字符集（或StandardCharsets.UTF_16LE）並跳過文件的第一個字符（例如，在第一行調用str.substring(1)）。

Answer 2

它看起來像您的文件編碼爲BOM文件。如果沒有需要處理BOM字符，然後打開記事本+ +和你的文件編碼爲UTF-8無BOM

要處理Java中的BOM文件，看看這個apache site for BOMInputStream

例子：

private static String readFile(String path, boolean isRaw) throws UnsupportedEncodingException, FileNotFoundException{ 
File fileDir = new File(path); 

try{ 
    BOMInputStream bomIn = new BOMInputStream(new FileInputStream(fileDir), ByteOrderMark.UTF_16LE); 

    //You can also detect UTF-8, UTF-16BE, UTF-32LE, UTF-32BE by using this below constructure 
    //BOMInputStream bomIn = new BOMInputStream(new FileInputStream(fileDir), ByteOrderMark.UTF_16LE, 
    //  ByteOrderMark.UTF_16BE, ByteOrderMark.UTF_32LE, ByteOrderMark.UTF_32BE, ByteOrderMark.UTF_8); 

    if(bomIn.hasBOM()){ 
     System.out.println("Input file was encoded as a bom file, the bom character has been removed"); 
    } 

    BufferedReader in = new BufferedReader(
     new InputStreamReader(
        bomIn, "UTF-8")); 

    String str; 

    while ((str = in.readLine()) != null) { 
     System.out.println(str); 
    } 

    in.close(); 
    return str; 
} 
catch (UnsupportedEncodingException e) 
{ 
    System.out.println(e.getMessage()); 
} 
catch (IOException e) 
{ 
    System.out.println(e.getMessage()); 
} 
catch (Exception e) 
{ 
    System.out.println(e.getMessage()); 
} 
return null; 
}