The Java client of Ethernet square uses __java

preparatory workWe have installed the Ethernet square client or the etheric square cluster installation JDK8 development environment, WEB3J needs in the Java 8 environment to run Introducing Jar Packs

<dependency>
  <groupId>org.web3j</groupId>
  <artifactId>core</artifactId>
  <version>2.2.1</version>
</dependency>

Connect the Ethernet square client

using the WEB3J API connection

public class Web3jclient {

    private static String IP = "HTTP://IP address: 8545/";

    Private Web3jclient () {}

    private volatile static web3j web3j;

    public static web3j Getclient () {
        if (web3j==null) {
            synchronized (web3jclient.class) {
                if (web3j==null) {
                    web3j = web3j.build (new Httpservice (IP));
                }
            }
        Return web3j
    }
}

using the Parity API connection

public class Parityclient {

    private static String IP = "HTTP://IP address: 8545/";

    Private Parityclient () {}

    private static class clientholder{
        private static final Parity Parity = Parity.build ( New Httpservice (IP));

    public static final  Parity getparity () {return
        clientholder.parity
    }
}

Account Operation

1. Create Account Pojo

public class AccountInfo {

    private String userName;

    Private String phone;

    Private String address;

    Private String School;

    Public String GetUserName () {return
        userName;
    }

    public void Setusername (String userName) {
        this.username = userName;
    }

    Public String Getphone () {return
        phone;
    }

    public void Setphone (String phone) {
        this.phone = phone;
    }

    Public String getaddress () {return address
        ;
    }

    public void setaddress (String address) {
        this.address = address;
    }

    Public String Getschool () {return
        school;
    }

    public void Setschool (String school) {
        this.school = school;
    }
}

2. Account related operation

public class Account {private static Parity Parity = Parityclient.getparity ();

    private static web3j web3j = Web3jclient.getclient ();
     /** * "Life *" like this * "like" * Also * It's not the "Same" with you @Author LZH * */Public list<string> getaccountlist () {try{return Parity.personallistaccount
        S (). Send (). Getaccountids ();
        }catch (Exception e) {e.printstacktrace ();
    return null;
            public string CreateAccount (string accountname,string password,accountinfo accountinfo) {try {
            Newaccountidentifier newaccountidentifier = parity.personalnewaccount (password). Send ();
                if (newaccountidentifier!=null) {String AccountId = Newaccountidentifier.getaccountid ();

                Parity.personalsetaccountname (Accountid,accountname); map<string,object> account = new hashmap<string,object>();
                Account.put (Accountid,accountinfo);

                Parity.personalsetaccountmeta (Accountid,account);
            return accountid;
        } catch (Exception e) {e.printstacktrace ();
    return null; Public Personalaccountsinfo.accountsinfo Getaccountinfo (String accountid) {try{Personalaccoun

            Tsinfo personalaccountsinfo = Parity.personalaccountsinfo (). Send ();
        Return Personalaccountsinfo.getaccountsinfo (). get (AccountId);
        }catch (Exception e) {e.printstacktrace ();
    return null; Public BigInteger getbalance (String accountid) {try {defaultblockparameter Defaultblockparamet
            ER = new Defaultblockparameternumber (58);
            Ethgetbalance ethgetbalance = parity.ethgetbalance (accountid,defaultblockparameter). Send ();
       if (ethgetbalance!=null) {return ethgetbalance.getbalance ();     }}catch (Exception e) {e.printstacktrace ();
    return null; }
}

Account Test

public class Accounttest {public static void main (String args[]) {getbalance ();
        public static void GetBalance () {Account account = new account ();
        BigInteger ba = account.getbalance ("0xcee1086eabd4cac10f6658eeffcdc66ad7565450");
    System.out.print (BA);
        public static void Queryaccount () {Account account = new account ();
        list<string> accounts = account.getaccountlist ();
        for (String accountid:accounts) {System.out.println (accountid);
            } public void CreateAccount () {Account account = new account ();
            AccountInfo accountinfo = new AccountInfo ();
            Accountinfo.setphone ("229787499");
            Accountinfo.setaddress ("World Ning Mansion");
            Accountinfo.setschool ("Buaa");
            Accountinfo.setusername ("Lzh");
            String AccountId = Account.createaccount ("Lzh", "123456", AccountInfo); SYSTEM.OUT.PRINTLN ("Registered account success:" +accountid);
Personalaccountsinfo.accountsinfo accountsinfo = Account.getaccountinfo ("0xad7bbca86e02e503076b06931e05938e51e4
9fb9 ");
    System.out.println (Accountsinfo.tostring ()); }
}

Transaction Operations

public class Trade {private static final Logger Logger = Loggerfactory.getlogger (Trade.class);

    private static BigInteger nonce = new BigInteger ("0");

    private static BigInteger Gasprice = new BigInteger ("1");

    private static BigInteger Gaslimit = new BigInteger ("50");

    Private Parity Parity = Parityclient.getparity (); public boolean trasfer (String accountid,string passsword,string toaccountid, BigDecimal amount) {Transaction tr
        Ansaction = Transaction.createethertransaction (Accountid,null,null,null,toaccountid,amount.tobiginteger ()); try{ethsendtransaction ethsendtransaction =parity.personalsignandsendtransaction (Transaction,passsword). Send (
            );
                if (ethsendtransaction!=null) {String Tradehash = Ethsendtransaction.gettransactionhash ();
            Logger.info ("account: [{}] Transfer to account: [{}], transaction hash:[{}]", Accountid,toaccountid,tradehash); }}catch (Exception e) {logger.error ("account: [{}]Trading Failure! ", accountid,e;
    return false; }

}

Trading Test

public class Tradetest {public

    static void Main (String args[]) {
        Trade Trade = new Trade ();
        Trade.trasfer ("Hash code for Account A", "abc123", "hash code for Account B", new BigDecimal);
    }

other

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