XRP瑞波币JAVA接入
前言：看一看瑞波币的白皮书资料https://developers.ripple.com/basic-data-types.html。再开始接入钱包。
另一篇XRP离线签名文章(https://blog.csdn.net/liu1765686161/article/details/83347534)
注意点：
1，瑞波币货币金额【XRP的数量表示为字符串。（XRP的精度相当于64位整数，但JSON整数限制为32位，因此如果以JSON整数表示，XRP可能会溢出。）XRP在“drop”中正式指定，相当于0.000001（1每个XRP的百万分之一。因此，要在JSON文档中表示1.0 XRP，您可以编写："1000000"】
2，日期格式。博主是通过日期来保存用户交易记录处理进度的。有人用的是marker保存进度。
3，用户充值地址。博主通过在主地址上加用户id（address_userId）。告知用户充值地址。用户充值时需主动处理地址。在备注中写入userId。
private String getUrl = "https://data.ripple.com";
private String postUrl = "https://s1.ripple.com:51234";
private String address = "";
private String password = "";
private Logger log = Log.get();
private final static String RESULT = "result";
private final static String SUCCESS = "success";
private final static String TES_SUCCESS = "tesSUCCESS";
private final static String METHOD_GET_TRANSACTION = "/v2/accounts/{0}/transactions";
private final static String METHOD_GET_BALANCE = "/v2/accounts/{0}/balances";
private final static String METHOD_POST_SIGN = "sign";
private final static String METHOD_POST_SUBMIT = "submit";1.在线签名（建议离线签名）
public String sign(String toAddress,Double value){
//瑞波币余额存储加六位长度
value = BigDecimalUtil.mul(value, 1000000);
Integer vInteger = BigDecimal.valueOf(value).intValue();
JSONObject txJson = new JSONObject();
txJson.put("Account", address);
txJson.put("Amount", vInteger.toString());
txJson.put("Destination", toAddress);
txJson.put("TransactionType", "Payment");
txJson.put("DestinationTag", "1");
HashMap params = new HashMap();
params.put("secret", password);
params.put("tx_json", txJson);
params.put("offline", false);
//签名
JSONObject json = doRequest(METHOD_POST_SIGN, params);
if (!isError(json)) {
JSONObject result = json.getJSONObject(RESULT);
if (result != null) {
if (SUCCESS.equals(result.getString("status"))) {
return result.getString("tx_blob");
}
}
}
return null;
} 2.发送
public String send(String toAddress,double value){
String txBlob = this.sign(toAddress, value);
if (StringUtils.isEmpty(txBlob)) {
log.error("签名失败:{}",toAddress);
return null;
}
HashMap params = new HashMap();
params.put("tx_blob", txBlob);
//签名
JSONObject json = doRequest(METHOD_POST_SUBMIT, params);
if (!isError(json)) {
JSONObject result = json.getJSONObject(RESULT);
if (result != null) {
if (TES_SUCCESS.equals(result.getString("engine_result"))) {
String hash = result.getJSONObject("tx_json").getString("hash");
if (!StringUtils.isEmpty(hash)) {
log.info("转账成功：toAddress:{},value:{},hash:{}",toAddress,value,hash);
return hash;
}else {
log.error("转账失败：toAddress:{},value:{},hash:{}",toAddress,value,hash);
}
}
}
}
return null;
} 3.XRP查询余额
public double getBalance(){
HashMap params = new HashMap();
params.put("currency", CoinConstant.COIN_XRP);
String re = HttpUtil.jsonGet(getUrl + MessageFormat.format(METHOD_GET_BALANCE, address), params);
log.info("获取XRP余额:{}",re);
if(!StringUtils.isEmpty(re)){
JSONObject json = JSON.parseObject(re);
if (SUCCESS.equals(json.getString(RESULT))) {
JSONArray array = json.getJSONArray("balances");
if (array != null && array.size() > 0) {
//总余额
double balance = array.getJSONObject(0).getDoubleValue("value");
if (balance >= 20) {
//可用余额 xrp会冻结20个币
return BigDecimalUtil.sub(balance, 20);
}
}
}
}
return 0.00;
} 4.处理用户交易记录
public Long parseTransaction(String startTm) {
HashMap params = new HashMap();
if (!StringUtils.isEmpty(startTm)) {
//记录时间格式目前XRP精确到秒
Date d = new Date(BigDecimalUtil.longAdd(Long.parseLong(startTm), 1000L));
params.put("start", DateUtil.dateToString(d, "yyyy-MM-dd'T'HH:mm:ss"));
}
params.put("result", "tesSUCCESS");
params.put("type", "Payment");
params.put("limit", "100");
String re = HttpUtil.jsonGet(getUrl + MessageFormat.format(METHOD_GET_TRANSACTION, address), params);
if(!StringUtils.isEmpty(re)){
JSONObject json = JSON.parseObject(re);
if (SUCCESS.equals(json.getString(RESULT))) {
// marker = json.getString("marker");
JSONArray transactions = json.getJSONArray("transactions");
if (transactions != null && transactions.size() > 0) {
for (Object object : transactions) {
JSONObject transaction = (JSONObject)object;
String hash = transaction.getString("hash");
String dateString = transaction.getString("date");
Date date =DateUtil.getStringToDate(dateString,"yyyy-MM-dd'T'HH:mm:ss");
JSONObject tx = transaction.getJSONObject("tx");
String destinationTag = tx.getString("DestinationTag");
if (StringUtils.isEmpty(destinationTag)) {
log.info("非用户充值记录");
return date.getTime();
}
String to = tx.getString("Destination");
if (!address.equals(to)) {
log.info("非用户充值记录,地址不一致");
return date.getTime();
}
//根据tag查找用户ID
/*UserEntity user = userService.getUserById(Integer.parseInt(destinationTag));
if (user == null) {
log.info("用户不存在：{}",destinationTag);
return date.getTime();
}*/
//double amount = tx.getDoubleValue("Amount");
//处理传入的支付交易的正确方法是使用的delivered_amount元数据字段，而不是Amount场
double amount = transaction.getJSONObject("meta").getDoubleValue("delivered_amount");
if (amount > 0 ) {
amount = BigDecimalUtil.div(amount, 1000000, 6);
}else {
log.error("交易金额异常：{}",amount);
return date.getTime();
}
//UserCoinRecordEntity record = new UserCoinRecordEntity();
/*record.setCoinType(CoinConstant.COIN_XRP);
record.setAddress(to+"_"+destinationTag);
record.setTxid(hash);
record.setUserId(user.getUserId());*/
try {
//添加充值记录;
return date.getTime();
}catch (DuplicateKeyException e){
log.error("eos hash:{} userid:{} coin:{} 这个区块已经处理了",hash,"XRP");
return null;
}
}
}
}
}
return null;
} 5.请求封装
private JSONObject doRequest(String method,Object... params){
JSONObject param = new JSONObject();
param.put("id",System.currentTimeMillis()+"");
param.put("jsonrpc","2.0");
param.put("method",method);
if(params != null){
param.put("params",params);
}
String creb = Base64.encodeBase64String((address+":"+password).getBytes());
Map headers = new HashMap<>(2);
headers.put("Authorization","Basic "+creb);
String resp = "";
try{
resp = HttpUtil.jsonPost(postUrl,headers,param.toJSONString());
}catch (Exception e){
log.info(e.getMessage());
if (e instanceof IOException){
resp = "{}";
}
}
log.info(resp);
return JSON.parseObject(resp);
} 处理用户充值：定时任务扫描
/**
* XRP处理
*/
private void xrpJob(){
//获取数据库保存的记录处理进度（日期）
String startTm = coinParseService.getBlockHeight(CoinConstant.COIN_XRP);
log.info("XRP当前处理进度：{}",startTm);
Long start = coinXrpService.parseTransaction(startTm);
if (!StringUtils.isEmpty(start)) {
log.info("xrp执行完毕");
coinParseService.updateBlockRecord(CoinConstant.COIN_XRP, start.toString());
}
}希望能帮到大家，欢迎大家一起分享。
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