我有一个智能合约,其中我通过一个手动模拟某些数据的集合模拟一个事件:(我使用Remix)
[ "From", "to", "object", [ "rules1", "rules2"]], [[1, "data1"], [2, "data2"], [3, "data3"]]
这是我的代码:
pragma experimental "v0.5.0";
pragma experimental ABIEncoderV2;
contract StructContract {
struct Certificate{
uint id;
string data;
}
struct StructEvent {
string _from;
string _to;
string _object;
string[] _rules;
}
StructEvent structEvent;
Certificate[] certificate;
function setEvent(StructEvent eventS,Certificate[] eventC) public{
certificate.length=0;
structEvent = eventS;
for(uint i=0;i<(eventC.length);i++){
certificate.push(Certificate(eventC[i].id,eventC[i].data));
}
}
function getStruct() view public returns(StructEvent){
return(structEvent);
}
function getCertificate() view public returns(Certificate[]){
return(certificate);
}
function returnAllData() view public returns(StructEvent,Certificate[]){
return(structEvent,certificate);
}
}
完成此操作后,我希望将这些数据放入事务中,然后将其上载到区块链。然后,我必须在这些事务中获取数据以对其进行检查。
因此,我需要将数据放在区块链上,以解决此问题,我创建了以下代码:(我使用的是web3 1.0.0-beta.36)
function printTransaction(txHash) {
web3.eth.getTransaction(txHash, function (error, tx) {
if (tx != null) {
var inputData = tx.input;
try {
var myContract = new web3.eth.Contract(abi, tx.to);
var result = web3.eth.abi.decodeParameters(['tuple(string,string,string,string[])',
'tuple(uint,string)[]'], inputData.slice(10));
var data1 = result[0];
var data2 = result[1];
console.log("\n\n");
console.log("--- transactions ---");
console.log(" tx hash : " + tx.hash + "\n"
+ " nonce : " + tx.nonce + "\n"
+ " blockHash : " + tx.blockHash + "\n"
+ " blockNumber : " + tx.blockNumber + "\n"
+ " transactionIndex: " + tx.transactionIndex + "\n"
+ " from : " + tx.from + "\n"
+ " to : " + tx.to + "\n"
+ " value : " + tx.value + "\n"
+ " gasPrice : " + tx.gasPrice + "\n"
+ " gas : " + tx.gas + "\n"
+ " input : " + tx.input + "\n"
+ " decodeinput : " + "\n"
+ " Struct : " + data1 + "\n"
+ " Certificates : " + data2);
web3.eth.getAccounts(function (err, account) {
myContract.methods.setEvent(data1, data2).send({ from: account[0], gas: 3000000 }, function (err, resul) {
if (err) {
console.log("err");
} else {
console.log("\n\n");
console.log("--- data ---");
myContract.methods.returnAllData().call().then(console.log);
}
});
});
} catch (Error) { }
}
});
}
我决定要做的是在一个js文件中创建一种方法,该方法能够进行交易,解码与其中包含的数据相关的输入,并将该数据通过发送传递给我的智能合约将使用它。
我创建的这些方法代表正确的解决方案?还是我必须使用另一种方法,另一种方法来做到这一点?
谢谢。