38、以太坊Web3开发指南

以太坊Web3开发指南

1. 智能合约部署

在以太坊开发中，使用Geth控制台部署智能合约是一个关键步骤。首先，启动挖矿：

> miner.start()

接着，将Web3部署脚本粘贴到Geth控制台：

> var valuecheckerContract = web3.eth.contract([{"constant": false, 
"inputs": [{"name": "x","type": "uint8"}],"name": "Matcher","outputs":  
[{"name": "","type": "bool"}],"payable": false,"stateMutability":  
"nonpayable","type": "function"},{"anonymous": false,"inputs":  
[{"indexed": false,"name": "returnValue","type": "bool"}],"name":  
"valueEvent","type": "event"}]);

然后，运行包含智能合约字节码的脚本：

> var valuechecker = valuecheckerContract.new({
......      from: web3.eth.accounts[0], 
.....