web3j区块链上链代码

timelessmemoryli

于 2020-07-22 11:22:37 发布

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分类专栏： java 区块链以太坊文章标签：区块链

本文链接：https://blog.youkuaiyun.com/u014788227/article/details/107508930

本文介绍如何利用web3j库进行区块链交互，首先确保安装了geth，接着通过代码展示如何进行上链操作。

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首先需要安装geth

以下为代码

private static final String URL = "http://localhost:8000";

    public static Web3j initWeb3j() {
        return Web3j.build(getService());
    }

    private static HttpService getService(){
        return new HttpService(URL);
    }

    /**
     * 创建账户
     * @param pwd
     * @throws Exception
     */
    public static void createAccount(String pwd) throws Exception {

        Bip39Wallet wallet = WalletUtils.generateBip39Wallet(pwd, new File("C:\\Users\\Administrator\\Desktop\\keystore\\"));

        Credentials credentials = WalletUtils.loadBip39Credentials(pwd, wallet.getMnemonic());

        //钱包地址 0x23f984a40d187d6c97b387b5436492023cceb12c
        String address = credentials.getAddress();
        System.out.println(address);
        //钱包私钥 89662c6e15987af2e26617a004b4b03ad57d477313352437acafdee61fc36660
        String privateKey = credentials.getEcKeyPair().getPrivateKey().toString(16);
        System.out.print