本页面使用机器翻译自英语，可能包含错误或不清楚的语言。如需最准确的信息，请参阅英文原文。由于更新频繁，部分内容可能与英文原文有出入。请加入我们在 Crowdin 上的努力，帮助我们改进本页面的翻译。 (Crowdin translation page, Contributing guide)

Deploy

Web3 SDK 支持通过合约实例（而非底层事务）与智能合约进行交互。

导入 web3 和 @kaiachain/web3js-ext 软件包，在 web3 上添加 kaia 功能

定义发件人地址和私人密钥

使用指定的 kairos 测试网 URL 设置提供程序。 web3js 中的提供者是访问区块链数据的只读抽象。

此外，您还可以将提供商 URL 从 kairos 更改为 quicknode

使用web3.eth.accounts.privateKeyToAccount将发件人的私人密钥转换为一个账户

定义要部署的编译合同字节码

定义合同 Abi，可以从编译后的 solidity 代码中获取

使用 Web3.eth.Contract创建合同实例，并定义 contractAbi

对部署合同所需的数据进行编码

创建交易对象，其中 data 是编码后的合约字节码，from: senderAddress 是发送方的钱包地址

使用 signTransaction 在发送人的账户上签署交易

将已签署的交易发送到网络并等待接收

smartContractDeploy.js

const { Web3 } = require("@kaiachain/web3js-ext");

const senderAddr = "0x24e8efd18d65bcb6b3ba15a4698c0b0d69d13ff7";

const senderPriv = "0x4a72b3d09c3d5e28e8652e0111f9c4ce252e8299aad95bb219a38eb0a3f4da49";

const provider = new Web3.providers.HttpProvider("https://public-en-kairos.node.kaia.io");

const web3 = new Web3(provider);

const senderAccount = web3.eth.accounts.privateKeyToAccount(senderPriv);

/* compiled in remix.ethereum.org (compiler: 0.8.18, optimizer: false)

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.13;

contract Counter {

uint256 public number;

event SetNumber(uint256 number);

constructor(uint256 initNumber) {

number = initNumber;

}

function setNumber(uint256 newNumber) public {

number = newNumber;

emit SetNumber(number);

}

function increment() public {

number++;

emit SetNumber(number);

}

}

*/

const bytecode = "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";

const contractAbi = JSON.parse('[{"inputs":[{"internalType":"uint256","name":"initNumber","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"number","type":"uint256"}],"name":"SetNumber","type":"event"},{"inputs":[],"name":"increment","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"number","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newNumber","type":"uint256"}],"name":"setNumber","outputs":[],"stateMutability":"nonpayable","type":"function"}]');

async function main() {

const contract = new web3.eth.Contract(contractAbi);

const data = contract.deploy({

data: bytecode,

arguments: [100],

}).encodeABI();

const tx = {

from: senderAddr,

data: data,

};

const signResult = await senderAccount.signTransaction(tx);

console.log("signedTx", signResult.transactionHash);

const receipt = await web3.eth.sendSignedTransaction(signResult.rawTransaction);

console.log("receipt", receipt);

}

main();

output

´ js SmartContractDeploy.js

signedTx 0x07b3209f1e56484f9a61885b25ddb398668b6d423ca98fea5004f1a1b87d1532

receipt {

blockHash：'0x8a5cde9fd5b5f8dba974b4d5207cdb728a7e07cc9f595ef8e6284f1681a45e8b',

blockNumber: 148742566n,

contractAddress：0xbb1e6520d31d7d046e993a436e0f9c054ac37efb',

cumulativeGasUsed：130317n,

effectiveGasPrice: 25000000000n,

from: '0xa2a8854b1802d8cd5de631e690817c253d6a9153',

gasUsed：130317n,

logs：[],

logsBloom：'0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',

status：1n,

transactionHash: '0x07b3209f1e56484f9a61885b25ddb398668b6d423ca98fea5004f1a1b87d1532',

transactionIndex：0n,

type：0n

}