一、以太坊交易获取
通常以两种方式获得以太坊交易：getTransaction、getTransactionReceipt web3.eth.getTransaction:
{
blockHash: '0x61b488038c4e08298b4970a50a07cd795bad6e84bd82f280fb1227b0ab4eb19c', blockNumber: 17835097, from: '0xF73d8f5BFb7f03b0AF375b1b5cF6581C367890e8', gas: 36922, gasPrice: '10000000000', hash: '0xb2e675f13b895e159d8a14ad39dae9ff90d043e459a1341481e196b1bcea98b6', input: '0x40c10f190000000000000000000000009c97efb29a3d453af239d133e867bf4c647a313c00000000000000000000000000000000000004ee2d6d415b85acef8100000000', nonce: 405, to: '0x20948400E68434010cFcfC978b66CFa656629D9b', transactionIndex: 7, value: '0', type: 0, v: '0xe6', r: '0x546e3662631e683574d098506604dda2ae13d1f10da6a25d60e462acb29f28b9', s: '0x548db669b21310288ace2e5a7557df78c3de83a037092de2328d65cad8ed8188' } web3.eth.getTransactionReceipt:
{
blockHash: '0x61b488038c4e08298b4970a50a07cd795bad6e84bd82f280fb1227b0ab4eb19c', blockNumber: 17835097, contractAddress: null, cumulativeGasUsed: 753442, from: '0xf73d8f5bfb7f03b0af375b1b5cf6581c367890e8', gasUsed: 36922, logs: [ {
address: '0x20948400E68434010cFcfC978b66CFa656629D9b', topics: [Array], data: '0x00000000000000000000000000000000000004ee2d6d415b85acef8100000000', blockNumber: 17835097, transactionHash: '0xb2e675f13b895e159d8a14ad39dae9ff90d043e459a134148e196b1bcea98b6',
transactionIndex: 7,
blockHash: '0x61b488038c4e08298b4970a50a07cd795bad6e84bd82f280fb1227b0ab4eb19c',
logIndex: 11,
removed: false,
id: 'log_b7283928'
}
],
logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000408000000000000000000000000000000000000000000000000020000000000000000000800004000000000000000000010000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000002000000000000000800000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000',
status: true,
to: '0x20948400e68434010cfcfc978b66cfa656629d9b',
transactionHash: '0xb2e675f13b895e159d8a14ad39dae9ff90d043e459a1341481e196b1bcea98b6',
transactionIndex: 7,
type: '0x0'
}
二、使用abi-parser解析input和logs
abi-parser 是一个用于解析ethereum/web3 日志、事件和方法的 NodeJS/JS 库。
安装
npm i abi-parser
实例
const AbiParser = require('abi-parser');
const abiParser = new AbiParser();
// Add the abis
const testABI1 = [
{
"inputs":[
{
"type":"address",
"name":""
}
],
"constant":true,
"name":"isInstantiation",
"payable":false,
"outputs":[
{
"type":"bool",
"name":""
}
],
"type":"function"
},
{
"inputs":[
{
"type":"address[]",
"name":"_owners"
},
{
"type":"uint256",
"name":"_required"
},
{
"type":"uint256",
"name":"_dailyLimit"
}
],
"constant":false,
"name":"create",
"payable":false,
"outputs":[
{
"type":"address",
"name":"wallet"
}
],
"type":"function"
},
{
"inputs":[
{
"type":"address",
"name":""
},
{
"type":"uint256",
"name":""
}
],
"constant":true,
"name":"instantiations",
"payable":false,
"outputs":[
{
"type":"address",
"name":""
}
],
"type":"function"
},
{
"inputs":[
{
"type":"address",
"name":"creator"
}
],
"constant":true,
"name":"getInstantiationCount",
"payable":false,
"outputs":[
{
"type":"uint256",
"name":""
}
],
"type":"function"
},
{
"inputs":[
{
"indexed":false,
"type":"address",
"name":"sender"
},
{
"indexed":false,
"type":"address",
"name":"instantiation"
}
],
"type":"event",
"name":"ContractInstantiation",
"anonymous":false
}
]
const testABI2 = [
{
"anonymous":false,
"inputs":[
{
"indexed":true,
"internalType":"address",
"name":"from",
"type":"address"
},
{
"indexed":true,
"internalType":"address",
"name":"to",
"type":"address"
},
{
"indexed":false,
"internalType":"uint256",
"name":"value",
"type":"uint256"
}
],
"name":"Transfer",
"type":"event"
}
];
abiParser.addABI(testABI1);
abiParser.addABI(testABI2);
// Decode an encoded method
const testMethod = "0x53d9d91000000000000000000000000000000000000000000000000000000000000000
6000000000000000000000000000000000000000000000000000000000000000010000000
0000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000002000000000000000000000000a
6d9c5f7d4de3cef51ad3b7235d79ccc95114de5000000000000000000000000a6d9c5f7d4
de3cef51ad3b7235d79ccc95114daa";
const decodedMethod = abiParser.decodeMethod(testMethod, true);
console.log('Decoded Method:', decodedMethod);
//Decode an encoded log
const testLog = {
"address":"0x8076C74C5e3F5852037F31Ff0093Eeb8c8ADd8D3",
"topics":[
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000ff3dd404afba451328de089424c74685bf0a43c9",
"0x0000000000000000000000008591aa322b6ce54a781b025a594fcf5b0cc20d22"
],
"data":"0x000000000000000000000000000000000000000000000000005af314c8ef9900",
"blockNumber":11951393,
"transactionHash":"0x7a125d37e18a3f37924970a08f0449a82be1cf15fabdf7631dbdc221330fba41",
"transactionIndex":67,
"blockHash":"0x5a0837ffcd732c23974878d70e4e3742299b34e05f1e1e4c14cf12fd5b4431ef",
"logIndex":155,
"removed":false,
"id":"log_bd721dfd"
};
const decodedLog = abiParser.decodeLog(testLog, true);
console.log('Decoded Log:', decodedLog);