oex-web3 v1.3.1
安装及引用:
npm i oex-web3 -S
import * as oex from 'oex-web3';
根据rpc功能划分了不同的域:
- oex.account.*: 包括查看账户、资产等功能
- oex.dpos.*: 包括查看竞选、出块节点信息以及dpos共识相关信息等功能
- oex.oex.*: 包括查看区块、交易信息以及签名、发送交易等功能
- oex.fee.*: 包括查看不同账户手续费的功能
- oex.miner.*: 包括启动挖矿、停止挖矿、设置coinbase等功能
- oex.p2p.*: 包括增加、删除节点等功能
- oex.txpool.*: 包括获取txpool信息以及设置gas price等功能
- oex.utils.*: 包括rlp编码、合约payload编码等功能
- oex.action.*: 包括发送各种交易的接口
demo1:设置节点信息、查看账户信息
节点rpc默认是htp://127.0.0.1:8545,如不是,必须先设置好节点信息,才可进行后续操作
import * as oex from 'oex-web3';
const nodeInfo = 'htp://127.0.0.1:8545';
oex.utils.setProvider(nodeInfo); //设置节点rpc信息
try {
const accountInfo = await oex.account.getAccountByName('oex.admin');
...
} catch (error) {
console(error);
}
demo2: 发送多签名交易
import * as oex from 'oex-web3';
// 交易完整结构体:{chainId, gasAssetId, gasPrice, actions:{actionType, accountName, nonce, gasLimit, toAccountName, assetId, amount, payload, remark}} // 其中chainId, gasAssetId, nonce, payload 以及 remark这几个参数如果不传,sdk会根据实际情况自动填充 txInfo = {...} signInfo1 = await oex.oex.signTx(txInfo, privateKey1); //获取第一个签名 signInfo2 = await oex.oex.signTx(txInfo, privateKey2); //获取第二个签名 multiSignInfos = [{signInfo1, 0}, {signInfo2, 1}]; parentIndex = 0; // 签名级别,如果为0,表示是自己账号签名,如果为1,表示父账号签名,如果为2,表示父父账号签名 oex.oex.sendSeniorSigTransaction(txInfo, multiSignInfos, 0).then(txHash => {...}).catch(error => {...}); // 发送多签名交易
demo3: 发送单签名交易
import * as oex from 'oex-web3';
txInfo = {...} signInfo1 = await oex.oex.signTx(txInfo, privateKey1, 0); oex.oex.sendSingleSigTransaction(txInfo, signInfo1).then(txHash => {...}).catch(error => {...});
demo4: 合约方法调用
- 合约代码:
contract hello { string greeting;
function hello(string _greeting) public {
greeting = _greeting;
}
function say() constant public returns (string) {
return greeting;
}
}
- sdk调用方式
import * as oex from 'oex-web3';
// 调用合约的hello方法 const payload = oex.utils.getContractPayload('hello', 'string', 'oex blockchain'); //payload会填入txInfo中 const txInfo = {...} // 构造合约交易对象 signInfo1 = await oex.oex.signTx(txInfo, privateKey1); oex.oex.sendSingleSigTransaction(txInfo, signInfo1, 0).then(txHash => {...}).catch(error => {...});
// 调用合约的say方法,由于say是一个constant类型的方法,只需要从链上读取数据,因此不需要发送交易,只要调用rpc中的call方法即可获得结果 const payload = oex.utils.getContractPayload('say', [], []); const callInfo = {actionType:0, from:'youraccount', to: 'contractAccountName', assetId:0, gas:100000, gasPrice:10, value:100, data:payload, remark:''}; oex.oex.call(callInfo, 'latest').then(result=>{...});
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