[英]Uncaught (in promise) Error while opening and doing transaction on private ethereum blockchain using web3 and go-ethereum
我正在嘗試使用web3js將React應用程序與以太坊集成。
事件Onsubmit將執行以下操作:1.創建一個帳戶。 2.打開帳戶。 3.使用創建的帳戶批准智能合約。
這是我的代碼
import React, { Component } from 'react';
import './App.css';
import web3 from './web3';
....
class App extends Component {
constructor(props){
super(props);
this.state = {requester : '', receiver:'', balance: '', message:''};
}
async componentDidMount(){
const requester = await auth.methods.requester().call();
const receiver = await auth.methods.receiver().call();
const approvers = await auth.methods.approvers(0).call();
const balance = await web3.eth.getBalance(auth.options.address);
this.setState({requester,receiver,balance});
}
onSubmit = async (event)=>{
event.preventDefault();
console.log('Approving the smart contract ..... Mining in process ! ');
var pass = "xxxxxxx"
var newaccount = web3.eth.personal.newAccount(pass);
var promise1 = Promise.resolve(newaccount);
promise1.then(function(value) {
var accountnumber = value;
console.log(accountnumber);
web3.eth.personal.unlockAccount(accountnumber,pass, 1500);
auth.methods.approve().send({gas: '1000000',from: accountnumber});
console.log('Smart Contract approved ! ');
});
};
正在創建帳戶,但是在進行交易時,我收到以下錯誤。
批准智能合約.....正在開采! App.js:57
0x98f76b2673d545F55c0ff1e961f15EF0a7DfBaD3
App.js:71個智能合約
批准! errors.js:29未捕獲(承諾)錯誤:返回錯誤:需要身份驗證:密碼或在XMLHttpRequest.request.onreadystatechange(index.js:103)的index.js:125在Object.ErrorResponse(errors.js:29)解鎖)XMLHttpRequest._onHttpResponseEnd(xml-http-request.js:459)的XMLHttpRequest._setReadyState(xml-http-request.js:288)的XMLHttpRequestEventTarget.dispatchEvent(xml-http-request-event-target.js:50)在push ../ node_modules / stream-http / lib / response.js.exports.IncomingMessage中。 (xml-http-request.js:413),位於push ../ node_modules / stream-http / lib / response.js.exports.IncomingMessage.emit(events.js:139),位於endReadableNT(_stream_read.js:1030), afterTickTwo(index.js:31)位於Item.push ../ node_modules / process / browser.js.Item.run(browser.js:167)在排水隊列(browser.js:131)ErrorResponse @ errors.js:29(匿名)@ index.js:125 request.onreadystatechange @ index.js:103 XMLHttpRequestEventTarget.dispatchEvent @ xml-http-request-event-target.js:50 XMLHttpRequest._setReadyState @ xml-http-request.js:288 XMLHttpRequest._onHttpResponseEnd @ xml-http-request.js:459(匿名)@ xml-http-request.js:413發出@ events.js:139 endReadableNT @ _stream_visible.js:1030 afterTickTwo @ index.js:31 push ../ node_modules /進程/瀏覽器.js.Item.run @瀏覽器.js:167排水隊列@瀏覽器.js:131 setTimeout(異步)_fireError @ index.js:72 sendTxCallback @ index.js:465(匿名)@ index.js:125請求.onreadystatechange @ index.js:103 XMLHttpRequestEventTarget.dispatchEvent @ xml -http-request-event-target.js:50 XMLHttpRequest._setReadyState @ xml-http-request.js:288 XMLHttpRequest._onHttpResponseEnd @ xml-http-request.js:459(匿名)@ xml-http-request.js: 413發出@ events.js:139 endReadableNT @ _stream_read.js:1030 afterTickTwo @ index.js:31 push ../ node_modules / process / browser.js.Item.run @ browser.js:167排水隊列@ browser.js:131 setTimeout(異步)runTimeout @ browser.js:43 push ../ node_modules / process / browser.js.process.nextTick @ browser.js:156 nextTick @ index.js:30也許ReadMore @ _stream_visible.js:521 addChunk @ _stream_可讀。 js:300可讀AddChunk @ _stream_read.js:278 push ../ node_modules / ready-stream / lib / _stream_visible.js.Readable.push @ _stream_visible.js:242(匿名)@ response.js:47寫@ response.js: 44
編輯:更改代碼以捕獲錯誤
web3.eth.personal.unlockAccount(accountnumber,pass, 1500, function(err, result){
if(err){
alert("Error"+ err);
return;}
alert("Account Opening: "+ result);});
.....
auth.methods.approve().send({gas: '1000000',from: accountnumber}, function(err, result){
if(err){
alert("Error"+ err);
return;}
alert("Account address: "+ result);
console.log('Smart Contract approved ! ');});
web3.eth.personal.unlockAccount
返回“ true”,但是auth.methods.approve
仍然給我錯誤。
因此,在對代碼進行了一些重大更改之后,我能夠通過react應用程序上的onSubmit事件執行以下操作。
這是代碼
onSubmit = async (event)=>{
event.preventDefault();
console.log('Approving the smart contract ..... Mining in process ! ');
var pass = "passsword1"
var newaccount = web3.eth.personal.newAccount(pass);
var promise1 = Promise.resolve(newaccount);
promise1.then(function(value) {
var accountnumber = value;
console.log(accountnumber);
web3.eth.personal.unlockAccount('0x197022acd263e8be0f6b65b10d1e5cdbaa244c17',"*****", 1500, function(err, result){
if(err){
alert("Error"+ err);
return;
}else {
alert("Parent Opening: "+ result);
web3.eth.sendTransaction({
from: "0x197022acd263e8be0f6b65b10d1e5cdbaa244c17",
to: accountnumber,
value: '100000000000000000',
}, function(err, transactionHash) {
if (err) {
console.log(err);
} else {
web3.eth.personal.unlockAccount(accountnumber,pass, 1500, function(err, result){
if(err){
alert("Error"+ err);
return;
}else{
console.log(web3.eth.getBalance(accountnumber));
alert("Child Opening: "+ result);
auth.methods.approve().send({gas: '20000000',from: accountnumber}, function(err, result){
if(err){
alert("Error"+ err);
return;
}else{
console.log("Account address: "+ result);
console.log('Smart Contract approved ! ');
}
});
}
});
}
});
}
});
};
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