I need to connect to private ethereum node with using ethereumj without ethereum.conf file. I need configure connect from code using Spring Framework.

2 Answers 2


It's working for me. May be it will help for some people.

public class EthereumAppConfig implements BeanPostProcessor {

    private static final List<String> ipList = new ArrayList<>();

    private static ConfigValue value(Object value) {
        return ConfigValueFactory.fromAnyRef(value);

    public Object postProcessBeforeInitialization(Object o, String s) throws BeansException {
        if (o instanceof SystemProperties)
            ((SystemProperties) o).overrideParams(getConfig());

        return o;

    public Object postProcessAfterInitialization(Object o, String s) throws BeansException {
        return o;

    private static Config getConfig() {
        List<Map<String, String>> peerActives = new ArrayList<>();

        Map<String, String> urls = new HashMap<>();

        urls.put("url", "enode://0");
        urls.put("url", "enode://1");
        urls.put("url", "enode://2");
        urls.put("url", "enode://4");

        return ConfigFactory.empty()
                .withValue("peer.discovery.enabled", value(true))
                .withValue("peer.discovery.external.ip", value(""))
                .withValue("peer.discovery.bind.ip", value(""))
                .withValue("peer.discovery.persist", value("false"))
                .withValue("peer.listen.port", value(00000))
                .withValue("peer.privateKey", value(Hex.toHexString(ECKey.fromPrivate(("0").getBytes()).getPrivKeyBytes())))
                .withValue("peer.networkId", value(76543))
                .withValue("sync.enabled", value(true))
                .withValue("genesis", value("genesis.json"))
                .withValue("database.dir", value("database"))
                .withValue("peer.discovery.ip.list", value(ipList))
                .withValue("peer.active", value(peerActives))
                .withValue("mine.start", value(true));


Please see the code that I've uploaded to Github which does exactly this :) It contains all the relevant config in the .conf file.

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