truffle_rinkeby

使用truffle部署solidity智能合约到rinkeby 1、安装mist,创建帐号 2、获取eth,方法有几种，plus.google.com 上面分享一条动态，内容为rinkeby的 address，拿到该动态的地址复制到https://faucet.rinkeby.io/获取eth 3、启动geth: geth --rinkeby --rpc --rpcapi db,eth,net,web3,personal --rpcport 8545 --unlock 0x3B2249987b5db4821aE2105E6Ec083d5e161A4E0   稍等输入帐号密码，完成后，窗口不要关掉（aB123456） 4、使用truffle创建项目，如果没安装truffle,使用命令 npm install -g truffle 5、创建项目 $ mkdir hello-world $ cd hello-world $ truffle init 6、执行完后会有一个基本的项目骨架， truffle test 可以测试一下，项目是否创建成功 7、开始写我们自己的合约代码，先删掉些默认的文件 rm contracts/ConvertLib.sol contracts/MetaCoin.sol rm test/TestMetacoin.sol test/metacoin.js rm migrations/2_deploy_contracts.js 8、truffle create contract HelloWorld 9、添加下面代码 pragma solidity ^0.4.4;

contract HelloWorld { //Begin: state variables address private creator; address private lastCaller; string private message; uint private totalGas; //End: state variables

//Begin: constructor function HelloWorld() { /* We can use the special variable tx which gives us information about the current transaction.

  `tx.origin` returns the sender of the transaction.
  `tx.gasprice` returns how much we pay for the transaction
*/
creator = tx.origin;
totalGas = tx.gasprice;
message = 'hello world';

} //End: constructor

//Begin: getters function getMessage() constant returns(string) { return message; }

function getLastCaller() constant returns(address) { return lastCaller; }

function getCreator() constant returns(address) { return creator; }

function getTotalGas() constant returns(uint) { return totalGas; } //End: getters

//Being: setters function setMessage(string newMessage) { message = newMessage; lastCaller = tx.origin; totalGas += tx.gasprice; } //End: setters }

10、创建migration truffle create migration deploy_hello_world 文件内容如下 const HelloWorld = artifacts.require('HelloWorld') module.exports = function(deployer) { deployer.deploy(HelloWorld) }

11、修改truffle.js 添加rinkeby网络 module.exports = { networks: { development: { host: "localhost", port: 8545, network_id: "*" // Match any network id }, rinkeby: { host: "localhost", // Connect to geth on the specified port: 8545, from: "你的rinkeby地址", // default address to use for any transaction Truffle makes during migrations network_id: 4, gas: 4612388 // Gas limit used for deploys } } };

12、部署到rinkeby truffle migrate --network rinkeby 13、交互 $ let contract $ HelloWorld.deployed().then(instance => (contract = instance)); $ contract.getMessage()/contract.getMessage.call() //调用读方法 $ contract.setMessage('test',{from:'rinkeby地址'})