JAVA接入web3j demo源码

import org.web3j.protocol.Web3j; import org.web3j.protocol.admin.Admin; import org.web3j.protocol.admin.methods.response.NewAccountIdentifier; import org.web3j.protocol.core.DefaultBlockParameter; import org.web3j.protocol.core.DefaultBlockParameterNumber; import org.web3j.protocol.core.methods.response.EthGetBalance; import java.math.BigInteger; import java.util.HashMap; import java.util.List; import java.util.Map; public class Account { private static Web3j web3j = Web3JClient.getClient(); private static Admin admin = Web3JClient.getAdmin(); public List<String> getAccountlist(){ try{ return admin.personalListAccounts().send().getAccountIds(); }catch (Exception e){ e.printStackTrace(); } return null; } public String createAccount(String password){ try { NewAccountIdentifier newAccountIdentifier = admin.personalNewAccount(password).send(); if(newAccountIdentifier!=null){ String accountId = newAccountIdentifier.getAccountId(); // admin.personalSetAccountName(accountId,accountName); // admin. // // Map<String,Object> account = new HashMap<String,Object>(); // account.put(accountId,accountInfo); // parity.personalSetAccountMeta(accountId,account);account return accountId; } } catch (Exception e) { e.printStackTrace(); } return null; } // public PersonalAccountsInfo.AccountsInfo getAccountInfo(String accountId){ // // try{ // PersonalAccountsInfo personalAccountsInfo = parity.personalAccountsInfo().send(); // // return personalAccountsInfo.getAccountsInfo().get(accountId); // }catch (Exception e){ // e.printStackTrace(); // } // return null; // } public BigInteger getBalance(String accountId){ try { DefaultBlockParameter defaultBlockParameter = new DefaultBlockParameterNumber(web3j.ethBlockNumber().send().getBlockNumber()); EthGetBalance ethGetBalance = web3j.ethGetBalance(accountId,defaultBlockParameter).send(); if(ethGetBalance!=null){ return ethGetBalance.getBalance(); } }catch (Exception e){ e.printStackTrace(); } return null; } }