使用 web3.js 和 Node.js 部署帶參數的合約
我嘗試部署 ERC721 合約。來自OpenZeppelin。
我的合約建構子需要兩個輸入字元串欄位。
constructor(string _name, string _symbol) public { name_ = _name; symbol_ = _symbol; // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(InterfaceId_ERC721Enumerable); _registerInterface(InterfaceId_ERC721Metadata); }
但是,當我部署合約時,它告訴我設置的參數必須是 HEX 編碼的數據。
這是我收到的錯誤消息:
/Users/amos_mac/721_server/node_modules/solc/soljson.js:1 (function (exports, require, module, __filename, __dirname) { var Module;if(!Module)Module=(typeof Module!=="undefined"?Module:null)||{};var moduleOverrides={};for(var key in Module){if(Module.hasOwnProperty(key)){moduleOverrides[key]=Module[key]}}var ENVIRONMENT_IS_WEB=typeof window==="object";var ENVIRONMENT_IS_WORKER=typeof importScripts==="function";var ENVIRONMENT_IS_NODE=typeof process==="object"&&typeof require==="function"&&!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_WORKER;var ENVIRONMENT_IS_SHELL=!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_NODE&&!ENVIRONMENT_IS_WORKER;if(ENVIRONMENT_IS_NODE){if(!Module["print"])Module["print"]=function print(x){process["stdout"].write(x+"\n")};if(!Module["printErr"])Module["printErr"]=function printErr(x){process["stderr"].write(x+"\n")};var nodeFS=require("fs");var nodePath=require("path");Module["read"]=function read(filename,binary){filename=nodePath["normalize"](filename);var ret=nodeFS["readFileSync"](filename);if(!
Error: The data field must be HEX encoded data.
所以我使用
web3.utils.asciiToHex()
了,但它沒有幫助。這是我部署合約的程式碼:
MyToken.deploy({ arguments: [[web3.utils.asciiToHex('Top 10 Students')],[web3.utils.asciiToHex('Top10')]] }).send({ from: address, gasPrice: gasPrice, gas: gas + 500000 }).then((instance) => { console.log("Contract mined at " + instance.options.address); });
請幫忙!非常感謝!
檢查我的程式碼後,我意識到我在我的字節碼中添加了額外的“0x”。這就是導致錯誤的原因。
web3.eth.Contract.deploy 的文件指出,您必須提供已編譯智能合約的字節碼以及參數:
MyToken.deploy({ data: '0x[INSERT THE BYTECODE HERE]', // You can omit the asciiToHex calls, as the contstructor takes strings. // Web3 will do the conversion for you. arguments: ['Top 10 Students','Top10'] }).send({ from: address, gasPrice: gasPrice, gas: gas + 500000 }).then((instance) => { console.log("Contract mined at " + instance.options.address); });