import org.apache.james.mime4j.stream.MimeTokenStream; //导入依赖的package包/类
private int receivedHeaderCount(MailData data) throws IOException,
        MimeException {
    int count = 0;
    MimeTokenStream stream = new MimeTokenStream();
    stream.parse(data.getInputStream());
    for (EntityState state = stream.getState(); state != EntityState.T_END_OF_STREAM; state =
            stream.next()) {
        switch (state) {
        case T_FIELD:
            if ("Received".equalsIgnoreCase(stream.getField().getName()))
                count++;
            break;
        case T_END_HEADER:
            stream.stop();
            break;
        }
    }
    return count;
}
 

import org.apache.james.mime4j.stream.MimeTokenStream; //导入依赖的package包/类
@Override
public Message parseMessage(final InputStream is)
        throws IOException
{
    try
    {
        final MessageImpl message = new MessageImpl();
        final DecodeMonitor mon = DecodeMonitor.SILENT;
        final BodyDescriptorBuilder bdb = new DefaultBodyDescriptorBuilder(null, LenientFieldParser.getParser(), mon);
        final MimeTokenStream tokenStream = new MimeTokenStream(new MimeConfig(), mon, bdb);
        final MimeStreamParser parser = new MimeStreamParser(tokenStream);

        tokenStream.setRecursionMode(RecursionMode.M_NO_RECURSE);

        parser.setContentHandler(new MimeUIEntityBuilder(message, new BasicBodyFactory()));
        parser.setContentDecoding(true);
        parser.parse(is);

        return message;
    }
    catch (final MimeException e)
    {
        throw new MimeIOException(e);
    }
}