Read raw file with unicode characters

问题

I have a file in the /res/raw (R.raw.test) folder with the following content:

This is a Tésêt

I want to read it into a string. My current code is:

public static String readRawTextFile(Context ctx, int resId) {
    InputStream inputStream = ctx.getResources().openRawResource(resId);

    InputStreamReader inputreader;
    try {
        inputreader = new InputStreamReader(inputStream, "UTF-8");
    } catch (UnsupportedEncodingException e1) {
        e1.printStackTrace();
        return null;
    }
    BufferedReader buffreader = new BufferedReader(inputreader);
    String line;
    StringBuilder text = new StringBuilder();

    try {
        while ((line = buffreader.readLine()) != null) {
            text.append(line);
            text.append('\n');
        }
    } catch (IOException e) {
        return null;
    }
    return text.toString();
}

But the string returned is:

This is a T�s�t

How can I solve this? Thanks

回答1:

Your code seems OK. String returned is OK also except that you're trying to view it in viewer not supporting UTF-8. I've run your code from groovyConsole which is UNICODE aware and it displays UTF-8 string perfectly.

回答2:

First of all, you need to determine the encoding of the file /res/raw

If on UNIX, you may type following commands

file /res/raw

And then specify the proper encoding in

inputreader = new InputStreamReader(inputStream, "UTF-8");

回答3:

I had a file that also gave me an output similar to 'This is a T�s�t', and for me, setting the charsetName to UTF-16 did the trick

回答4:

Hi i would try something like this:

StringBuilder str = new StringBuilder();
File file = new File("c:\\some_file.txt");
FileInputStream is = new FileInputStream(file);
Reader reader = new InputStreamReader(is, "UTF-8");
while(true){
    int ch = reader.read();
    if(ch < 0){
      break;
    }
    str.append((char)ch);
}
String myString = str.toString();

If you want to write just use InputStreamWriter with FileOutputStream and setup right Encoding... it works like charm...

I hope i could help :-)

来源：https://stackoverflow.com/questions/14335166/read-raw-file-with-unicode-characters