RTEditor/src/main/java/com/onegravity/rteditor/utils/io/IOUtils.java
public static List<String> readLines(InputStream input, Charset encoding) throws IOException {
        InputStreamReader reader = new InputStreamReader(input, Charsets.toCharset(encoding));
        return readLines(reader);
    }
public static List<String> readLines(InputStream input, Charset encoding) throws IOException {
        InputStreamReader reader = new InputStreamReader(input, Charsets.toCharset(encoding));
        return readLines(reader);
    }
Get the contents of an <code>InputStream</code> as a list of Strings,
one entry per line, using the specified character encoding.
<p/>
This method buffers the input internally, so there is no need to use a
<code>BufferedInputStream</code>.

@param input    the <code>InputStream</code> to read from, not null
@param encoding the encoding to use, null means platform default
@return the list of Strings, never null
@throws NullPointerException if the input is null
@throws IOException          if an I/O error occurs
@since 2.3