package.json
配置文件信息
{
"name": "test-mascara",
"version": "1.0.0",
"description": "",
"main": "main.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"dependencies": {
"ejs": "^2.6.1",
"ethjs": "^0.4.0",
"events": "^3.0.0",
"express": "^4.16.4",
"metamascara": "^2.2.1",
"path": "^0.12.7",
"solc": "^0.4.25",
"web3": "^1.0.0-beta.36"
}
}
mascara.js
调用metamascara
const metamask = require('metamascara');
const Web3 = require('web3');
const fs = require("fs"); const ethereumProvider = metamask.createDefaultProvider(); global.web3 = new Web3(ethereumProvider);
console.log(web3); var miner = '0x7DdaD6a67544efB0c51808c77009a7B98Cc81630';//这个是本人添加在wallet.metamask.io线上钱包的一个账号
web3.eth.getBalance(miner) //得到了它在Rinkeby上的余额,说明它连接的是Rinkeby的测试网站
.then(console.log); var mydata = web3.utils.sha3('i want to be your friend');
// console.log(mydata);
web3.eth.sendTransaction({//会弹出窗口
from: '0x7DdaD6a67544efB0c51808c77009a7B98Cc81630',
to: '0x3B896Fb3e31fC9B91921d19B8C7271d1c3af5B35',
value: '',
data:mydata
})
.on('transactionHash', function(hash){
console.log(hash);
})
.on('receipt', function(receipt){
console.log(receipt);
})
.on('confirmation', function(confirmationNumber, receipt){
console.log(confirmationNumber);
})
.on('error', console.error);
main.js
设置dapp server服务器
const express = require('express');
const app = new express();
const ejs = require('ejs');
const path = require('path');
app.set('views',path.join(__dirname,'views'));
app.engine('.html',ejs.__express);
app.set('view engine','html'); app.use(express.static(path.join(__dirname,'public')));//放mascara-bundle.js var server = app.listen(,function(){
var host = server.address().address;
var port = server.address().port;
console.log("应用实例,访问地址为 %s:%s",host,port);
}); app.get('/', function(req, res){
res.render('index');
});
views/index.html
<!doctype html> <html lang="en">
<head>
<meta charset="utf-8">
<span style="white-space:pre"></span>
<link href="http://www.lituanmin.com/favicon.ico" rel="icon" type="image/x-icon" />
<title>MetaMask ZeroClient Example</title>
</head> <body>
<p>访问网页后鼠标随意点击一下页面就能够弹出确认窗口了</p>
<script src="/mascara-bundle.js"></script>
</body>
</html>
首先调用browserify mascara.js > public/mascara-bundle.js
得到mascara-bundle.js文件
然后在终端运行node main.js,打开server服务器
接着就能够在浏览器访问网址了http://localhost:8081
⚠️在访问该浏览器时我登录了页面版的metamask钱包,否则访问不到相应的账户信息,因为账户是上锁的
这时候点击一下页面就有窗口弹出了
wallet.metamask.io这个线上钱包默认连接的是rinkeby测试网络
这时候如果我将网页版的钱包的信息该成主网版本:
那么再运行的时候就是在主网上运行了:
然后点击confirm后,可以看见,该交易失败: