用everitoken新建FungibleToken到转移FungibleToken的例子

首先上代码：

 public static void main(String[] args) throws ApiResponseException {// Init test netPrivateKey privateKey = PrivateKey.randomPrivateKey();PublicKey publicKey = privateKey.toPublicKey();NetParams netParams = new TestNetNetParams();// get node info for building the transactionNodeInfo nodeInfo = (new Info()).request(RequestParams.of(netParams));String FTName = getRandomString(5);int id=129;NewFungibleAction newFungibleAction=NewFungibleAction.of(Symbol.of(id,5),FTName,publicKey.toString(),JSONObject.parseObject("{\"name\":\"issue\",\"threshold\":1,\"authorizers\":[{\"ref\":\"[A]"+" "+publicKey.toString()+"\",\""+"weight\":"+"1}]}"),JSONObject.parseObject("{\"name\":\"manage\",\"threshold\":1,\"authorizers\":[{\"ref\":\"[A]"+" "+publicKey.toString()+"\",\""+"weight\":"+"1}]}"),"10000.00000 S#"+id);KeyProvider provider = KeyProvider.of(privateKey.toWif());try{TransactionService transactionService1 = TransactionService.of(netParams);TransactionConfiguration trxConfiguration = TransactionConfiguration.of(nodeInfo,1000000,publicKey);TransactionData NewFT =transactionService1.push(trxConfiguration,Arrays.asList(newFungibleAction),false,provider);System.out.println(NewFT.getTrxId());}catch (ApiResponseException ex){System.out.println(ex.getRaw());}//issue this FungibleIssueFungibleAction issueFungibleAction = IssueFungibleAction.of("100.00000 S#"+id,publicKey.toString(), "test from java");try {TransactionService transactionService = TransactionService.of(netParams);TransactionConfiguration trxConfig = TransactionConfiguration.of(nodeInfo, 1000000,PublicKey.of(publicKey.toString()));TransactionData txData = transactionService.push(trxConfig, Arrays.asList(issueFungibleAction), false,provider);System.out.println(txData.getTrxId());} catch (ApiResponseException ex) {System.out.println(ex.getRaw());}//transfer the FungibleTokenTransferFungibleAction transferFungibleAction = TransferFungibleAction.of("1.00000 S#"+id,publicKey.toString(),"EVT8aNw4NTvjBL1XR6hgy4zcA9jzh1JLjMuAw85mSbW68vYzw2f9H", "test java");// Init transaction service with net parametersTransactionService transactionService = TransactionService.of(netParams);KeyProvider keyProvider = KeyProvider.of(privateKey.toWif());try {// Construct transaction configurationTransactionConfiguration trxConfig1 = TransactionConfiguration.of(nodeInfo, 100000, PublicKey.of(publicKey.toString()), false, null);TransactionData push = transactionService.push(trxConfig1, Arrays.asList(transferFungibleAction), false,KeyProvider.of(privateKey.toWif()));System.out.println(JSON.toJSONString(push));}catch (ApiResponseException ex){System.out.println(nodeInfo);}}public static String getRandomString(int length){String str="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";Random random=new Random();StringBuffer sb=new StringBuffer();for(int i=0;i<length;i++){int number=random.nextInt(62);sb.append(str.charAt(number));}return sb.toString();}

然后便是解释一下这个代码：

首先开始的

这里是新建一个私钥并把私钥转换成公钥的操作，相当于建立了一个可以新建Token的账户

这里是网络方面的配置，更加直白一点的说是选择一个节点

everitoken有十多个节点分布在世界各地，其中包含一个测试节点，像这里我们选择的就是测试节点（不要钱）

另外这里就是获取这个节点的信息，几乎所有的动作都需要节点的信息

接下来就是新建FungibleToken了（）以下简称FT

NewFungibleAction newFungibleAction=NewFungibleAction.of(Symbol.of(id,5),FTName,publicKey.toString(),JSONObject.parseObject("{\"name\":\"issue\",\"threshold\":1,\"authorizers\":[{\"ref\":\"[A]"+" "+publicKey.toString()+"\",\""+"weight\":"+"1}]}"),JSONObject.parseObject("{\"name\":\"manage\",\"threshold\":1,\"authorizers\":[{\"ref\":\"[A]"+" "+publicKey.toString()+"\",\""+"weight\":"+"1}]}"),"10000.00000 S#"+id);

这里就是构造一个Action这个Action就是新建一个FT，配置一个新建FT的动作，里面的格式需要正确，可以发现这里格式有点难看清楚我把格式单独拿出来一下：

{"name":"Action","threshold":num(int),"authorizers":[{"ref":"[A] publicKey","weight":num(int)}]}

其中Action可以是issue或者manage

配置好这个FT和动作之后我们就需要把他发送到everitoken那里了

     KeyProvider provider = KeyProvider.of(privateKey.toWif());try{TransactionService transactionService1 = TransactionService.of(netParams);TransactionConfiguration trxConfiguration = TransactionConfiguration.of(nodeInfo,1000000,publicKey);TransactionData NewFT =transactionService1.push(trxConfiguration,Arrays.asList(newFungibleAction),false,provider);System.out.println(NewFT.getTrxId());}catch (ApiResponseException ex){System.out.println(ex.getRaw());}

首先KeyProvider是新建一个私钥提供者，因为在everitoken上每个Action都需要签名

然后便是建立一个TransactionService类的对象，这个对象负责之后的push操作，即把newFungibleAction给push到everitoken上

之后配置trx

然后push

一般按照这个步骤就可以完成一个Action和everitoken的互动

到这里就已经完成了新建FT了

接着如果要交易还需要issue该FT才能进行交易，我们这里issue到刚刚创建的那个人的地址

issue操作大同小异：

//issue this FungibleIssueFungibleAction issueFungibleAction = IssueFungibleAction.of("100.00000 S#"+id,publicKey.toString(), "test from java");try {TransactionService transactionService = TransactionService.of(netParams);TransactionConfiguration trxConfig = TransactionConfiguration.of(nodeInfo, 1000000,PublicKey.of(publicKey.toString()));TransactionData txData = transactionService.push(trxConfig, Arrays.asList(issueFungibleAction), false,provider);System.out.println(txData.getTrxId());} catch (ApiResponseException ex) {System.out.println(ex.getRaw());}

首先创建一个Action

然后按照刚刚的步骤

Service->Configuration->push

的方式完成该动作

这里要提的一个是100.00000

这里的小数点后面的“0”的个数就是我们创建FT时候Symbol里面的precesion（精度）的值否则会报错

然后就是交易了

TransferFungibleAction transferFungibleAction = TransferFungibleAction.of("1.00000 S#"+id,publicKey.toString(),"EVT8aNw4NTvjBL1XR6hgy4zcA9jzh1JLjMuAw85mSbW68vYzw2f9H", "test java");TransactionService transactionService = TransactionService.of(netParams);KeyProvider keyProvider = KeyProvider.of(privateKey.toWif());try {TransactionConfiguration trxConfig1 = TransactionConfiguration.of(nodeInfo, 100000,PublicKey.of(publicKey.toString()), false, null);TransactionData push = transactionService.push(trxConfig1, Arrays.asList(transferFungibleAction), false,KeyProvider.of(privateKey.toWif()));System.out.println(JSON.toJSONString(push));}catch (ApiResponseException ex){System.out.println(nodeInfo);}

这里那一串数字是Demo里面提供的交易的对象我不知道卖给谁就直接用Demo里面提供的对象了

可以发现还是老套路：

新建一个Action

然后KeyProvider

Service->Configuration->push