1. 依赖导入
<dependency>
<groupId>org.web3j</groupId>
<artifactId>core</artifactId>
<!--<systemPath>${project.basedir}/src/main/webapp/WEB-INF/lib/core-3.4.0.jar</systemPath>-->
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.web3j</groupId>
<artifactId>crypto</artifactId>
<version>RELEASE</version>
</dependency>
<!-- 用于助记词加密工具 -->
<dependency>
<groupId>io.github.novacrypto</groupId>
<artifactId>BIP32derivation</artifactId>
<version>0.0.2</version>
</dependency>
<dependency>
<groupId>io.github.novacrypto</groupId>
<artifactId>BIP39</artifactId>
<version>0.1.9</version>
</dependency>
<dependency>
<groupId>io.github.novacrypto</groupId>
<artifactId>BIP44</artifactId>
<version>0.0.3</version>
</dependency>
<dependency>
<groupId>org.bitcoinj</groupId>
<artifactId>bitcoinj-core</artifactId>
<version>0.14.6</version>
<scope>compile</scope>
</dependency>
2.创建钱包
钱包可以创建助记词或非助记词钱包；钱包创建在以太坊地址上会生成八个路径上的不同钱包地址；这里选择"m/44'/60'/0'/0/0"；也是市面上大部分钱包所选择的：
/**
*生成的keyStore文本的存储位置
*/
@Value("${wallet.keyStore.path}")
private String filePath;
/**
* 通用的以太坊基于bip44协议的助记词路径 （imtoken jaxx Metamask myetherwallet）
*/
private static String ETH_TYPE = "m/44'/60'/0'/0/0";
private static SecureRandom secureRandom = new SecureRandom();
生成无助记词钱包：
/**
* 生成eth钱包 保存对应的keyStore(无助记词方式)
* @param password
* @return
* @throws NoSuchAlgorithmException
* @throws NoSuchProviderException
* @throws InvalidAlgorithmParameterException
* @throws CipherException
* @throws IOException
*/
public String createWallet(String password) throws NoSuchAlgorithmException, NoSuchProviderException,
InvalidAlgorithmParameterException, CipherException, IOException {
File file = new File(filePath);
String fileName = WalletUtils.generateFullNewWalletFile(password, file);
System.out.println(fileName);
return fileName;
}
