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Ontology Java SDK User Guide

Version 0.7.0

数字存证

操作步骤

  • 1.初始化SDK
String ip = "http://127.0.0.1";
String restUrl = ip + ":" + "20384";
String rpcUrl = ip + ":" + "20386";
String wsUrl = ip + ":" + "20385";
OntSdk wm = OntSdk.getInstance();
wm.setRpc(rpcUrl);
wm.setRestful(restUrl);
wm.setDefaultConnect(wm.getRestful());
wm.openWalletFile("RecordTxDemo.json");
wm.setCodeAddress("803ca638069742da4b6871fe3d7f78718eeee78a");

Note: codeAddress是存证合约地址。

    1. 将数据保存到链上
String res = ontSdk.getRecordTx().sendPut("TA9WXpq7GNAc2D6gX9NZtCdybRq8ehGUxw","passwordtest","key","value");

Note: key表示存到链上数据value的key，以后可以根据key获得存的数据value。

    1. 根据key从链上获得数据
String res = ontSdk.getRecordTx().sendGet("TA9WXpq7GNAc2D6gX9NZtCdybRq8ehGUxw","passwordtest","key");
    1. 返回值说明
{"Data":{"Algrithem":"SM2","Hash":"","Text":"value","Signature":""},"CAkey":"","SeqNo":"","Timestamp":0}

Note: Algrithem:加密算法名，Hash:存证hash，Text:存的内容，Signature:对存证hash做的签名，CAkey:发起者身份标志，SeqNo:交易流水号，Timestamp:外部时间戳