读取assets中的文件

public class JsonFileReader {    public static String getJson(Context context, String fileName) {        ByteArrayOutputStream baos = new ByteArrayOutputStream();        try {            AssetManager assetManager = context.getAssets();            InputStream inputStream = assetManager.open(fileName);            BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);            byte[] buffer = new byte[1024];            int len;            while ((len = bufferedInputStream.read(buffer)) != -1) {                baos.write(buffer, 0, len);            }        } catch (IOException e) {            e.printStackTrace();        }        return baos.toString();    }}