ByteBufUtils.java 文件源码

public static String byteBuf2String(ByteBuf buf, Charset charset) throws UTFDataFormatException, IndexOutOfBoundsException, CharacterCodingException {

        int byteLen = buf.readableBytes();

        if (charset.equals(StandardCharsets.US_ASCII)) {
            return Utf8Reader.readUtf8(buf, byteLen);
        } else if (charset.equals(StandardCharsets.UTF_8)) {
            try {
                return Utf8Reader.readUtf8(buf.duplicate(), (int) (byteLen * 1.4));
            } catch (IndexOutOfBoundsException e) {
                // try again with 3 bytes per char
                return Utf8Reader.readUtf8(buf, byteLen * 3);
            }
        } else {
            return byteBuffersToString(buf.nioBuffers(), charset);
        }
    }