deploy.js调用Web3.js接口部署合约流程

最新推荐文章于 2023-06-08 11:00:30 发布

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最新推荐文章于 2023-06-08 11:00:30 发布

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分类专栏： substrate

本文链接：https://blog.youkuaiyun.com/yzpbright/article/details/119568832

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该博客介绍了如何通过deploy.js脚本利用Web3.js库来部署以太坊智能合约。首先，它设置Web3实例连接到本地以太坊节点。接着，定义了合约部署所需的账户信息、字节码和ABI。然后，创建合约实例，构造交易并用私钥签名，最后发送交易并等待收据，从而完成合约的部署。

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分析部署脚本deploy.js是如何调用Web3.js接口进行部署一个合约的：

//filename: deploy.js

const Web3 = require('web3');
const contractFile = require('./compile');

/*
   -- Define Provider & Variables --
*/
// Provider
const providerRPC = {
   development: 'http://localhost:8545',
};
const web3 = new Web3(providerRPC.development); //Change to correct network

// Variables
const account_from = {
   privateKey: 'YOUR-PRIVATE-KEY-HERE',
   address: 'PUBLIC-ADDRESS-OF-PK-HERE',
};
const bytecode = contractFile.evm.bytecode.object;
const abi = contractFile.abi;

/*
   -- Deploy Contract --
*/
const deploy = async () => {
   console.log(`Attempting to deploy from account ${account_from.address}`);

   // Create Contract Instance
   const incrementer = new web3.eth.Contract(abi);

   // Create Constructor Tx
   const incrementerTx = incrementer.deploy({
      data: bytecode,
      arguments: [5],
   });

   // Sign Transacation and Send
   const createTransaction = await web3.eth.accounts.signTransaction(
      {
         data: incrementerTx.encodeABI(),
         gas: await incrementerTx.estimateGas(),
      },
      account_from.privateKey
   );

   // Send Tx and Wait for Receipt
   const createReceipt = await web3.eth.sendSignedTransaction(
      createTransaction.rawTransaction
   );
   console.log(
      `Contract deployed at address: ${createReceipt.contractAddress}`
   );
};

deploy();