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Deploy

Web3 SDK 支持通過合約實例(而非底層事務)與智能合約進行交互。

導入 web3@kaiachain/web3js-ext 軟件包,在 web3 上添加 kaia 功能

定義發件人地址私人密鑰

使用指定的 kairos 測試網 URL 設置提供程序。 web3js 中的提供者是訪問區塊鏈數據的只讀抽象。

此外,您還可以將提供商 URL 從 kairos 更改為 quicknode

使用web3.eth.accounts.privateKeyToAccount將發件人的私人密鑰轉換為一個賬戶

定義要部署的編譯合同字節碼

定義合同 Abi,可以從編譯後的 solidity 代碼中獲取

使用 Web3.eth.Contract創建合同實例,並定義 contractAbi

對部署合同所需的數據進行編碼

Create a transaction object with data is the encoded contract bytecode, from: senderAddress is sender's wallet address

使用 signTransaction發送人的賬戶上籤署交易

將已簽署的交易發送到網絡並等待接收

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

❯ java smartContractDeploy.java
signedTx 0x476a6257353fc48dfd1bad5090026f065345c5ef0dbce85434c372b6d5817e75
receipt {
blockHash: '0x476295f949db32245fa433878bef56b5e2282aee46c8c2ec72a90bca64a9864a',
blockNumber: 148743465n,
contractAddress: '0xa0ca0d72ce4be89ccdaf4f3ed18313392523f903',
cumulativeGasUsed: 673526n,
effectiveGasPrice: 25000000000n,
from: '0x24e8efd18d65bcb6b3ba15a4698c0b0d69d13ff7',
gasUsed: 280644n,
logs: [],
logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
status: 1n,
transactionHash: '0x476a6257353fc48dfd1bad5090026f065345c5ef0dbce85434c372b6d5817e75',
transactionIndex: 2n,
type: 2n
}

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