已部署的合约事件侦听不起作用-解网

问：

是什么原因导致我无法从币安智能链（BNB）测试网和 Aurora 测试网上部署的合约接收事件，即使在尝试了不同的节点之后？如何解决此问题并确保我已正确连接到完全同步的节点，并且合约中的事件发射器函数正常工作？另外，我在哪里可以找到订阅这些网络和平台上的活动的相关文档？

const Web3 = require('web3');

const url = 'wss://testnet.aurora.dev';
const web3 = new Web3(url);
const jsonContract = require('./Social.json');

const contractAddress = '0xf439CC546784AB129e3Bf7205F2763b4D042d02F';
const abi = jsonContract.abi;

const contract = new web3.eth.Contract(abi, contractAddress);



console.log(web3.utils.sha3('NewPublication(address,uint256,bytes32,string,string)'))


async function listenForEvent() {
    const subscription = web3.eth.subscribe('logs', {
        address: contractAddress,
        topics: [web3.utils.sha3('NewPublication(address,uint256,bytes32,string,string)')]
    }, function (error, result) {
        if (!error) {
            console.log(result);
        } else {
            console.error(error);
        }
    }).on("changed", log =>{
        console.log('changed');
    })

    await subscription.on('data', log => {
        console.log(log);
    });

    subscription.on('error', error => console.log(error));
}

listenForEvent();


async function getPastEvents() {
    const events = await contract.getPastEvents('NewPublication', {
        fromBlock: 0,
        toBlock: 'latest'
    });

    console.log(events);
}

getPastEvents();

getPastEvents 在同一合约中按预期工作

[
  {
    removed: false,
    logIndex: 0,
    transactionIndex: 0,
    transactionHash: '0x762b686ce78f968860ca7e3d2aa4254b5dfe85245d559dc96dc7640087b76a9e',
    blockHash: '0x044ae30b0cd99173fc5e2858151b5ef00a02f6e8c36675064f32688eae6839f1',
    blockNumber: 125941567,
    address: '0xf439CC546784AB129e3Bf7205F2763b4D042d02F',
    id: 'log_21ab5939',
    returnValues: Result {
      '0': '0x57a77F5F7bB971e7207ca4AeF93Dc3B6d2dEf89d',
      '1': '10000000000',
      '2': '0x4eca8631a30e9265a9d321b42d471f6e7f1768dbc11c4d2a97af53a3c5b8b584',
      '3': 'Hello',
      '4': 'this is my first test on aurora test net',
      sender: '0x57a77F5F7bB971e7207ca4AeF93Dc3B6d2dEf89d',
      amount: '10000000000',
      id: '0x4eca8631a30e9265a9d321b42d471f6e7f1768dbc11c4d2a97af53a3c5b8b584',
      title: 'Hello',
      body: 'this is my first test on aurora test net'
    },
    event: 'NewPublication',
    signature: '0x2abd08dfb4ff7a2a5d8e630ea1515e3a0b843830a6fc26e209683f66acb70537',
    raw: {
      data: '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',
      topics: [Array]
    }
  }
]

节点.js 事件智能合约 web3js

var options = {
    reconnect: {
        auto: true,
        delay: 5000, // ms
        maxAttempts: 5,
        onTimeout: false
    },
    address: contractAddress,
    topics: [
        web3.utils.sha3('NewPublication(address,uint256,bytes32,string,string)')
    ],
    fromBlock: 0,
    toBlock: 'latest'
};

2 - 使用 await 调用 web3.eth.subscribe

await web3.eth.subscribe('logs', options, function (error, result) {
    console.log(" ************ SUBSCRIBE **********************************")
    if (!error) {
        console.log(result);
    } else {
        console.error(error);
    }
}).on("changed", log => {
    console.log(" ************ CHANGED **********************************")
    console.log('changed');
}).on('data', log => {
    console.log(" ************ DATA **********************************")
    console.log(log);
}).on('error', error => {
    console.log(" ************ ERROR **********************************")
    console.log(error)
}).on("connected", log => {
        console.log(" ************ CONNECTED **********************************")
        console.log(log);
    })

上一个：执行哪些事件循环阶段事件发射器回调？

下一个：无法使用以太币捕获所有事件

已部署的合约事件侦听不起作用

Deployed contract event listening not working

评论