node.js本地安装和Truffle安装
node.js安装
1. NodeJS
的下载地址：
http://nodejs.cn/download/ win64.zip
2.
在
path
环境变量中
,
添加
nodejs
路径
3. node h
获取各种参数信息
4. node test.js
可以执行当前目录的
test.js
文件
使用淘宝 NPM 镜像安装cnpm
$ npm install -g cnpm --registry=https://registry.npm.taobao.org
加快安装truffle
Truffle介绍与开发环境搭建
- 内置智能合约编译、链接、开发和二进制管理
- 快速开发的自动化合约测试
- 脚本、可扩展性部署和迁移框架
- 为合约通讯提供交互式平台
- 在Truffle的环境中执行外部的运行脚本
// -g为全局变脸安装，会主动安装到node.js文件夹下面
$cnpm install -g truffle
truffle的使用文档链接http://truffleframework.com/docs
开启truffle
进入cmd，truffle init 时候要在一个空白文件夹
//在profiles里面创建demo
下载使用Atom https://atom.io/
下载插件 进入到Setting 里面的install
1: autocomplete-solidity 代码自动补全
2：language-ethereum 支持高亮
3：linter-solium
4.linter-solidity 代码错误检查
有些可能安装不了，可以进入github下载zip文件再解压到C：/User/huanggang/.atom/package.
然后再进入cmd，使用cnpm install 就可以了。
Powershell的使用
Powershell
是
vista
就出现了
,
用来代替
CMD
的
. Powershell
是
cmd
的超集，换句话说，
cmd
能做的事情，
Powershell
都能做。
win+r；将cmd换成powershell。。。。但是我的win10好像不能够进入开发者模式
Truffle 命令
首先进入到项目的目录，
//进入到开发者模式
>truffle develop
//执行完上面命令，会出现9个账户和私钥
>compile //编译，atom会出现buildwenjian
>deploy //部署
//常用命令
build Execute build pipeline (if configuration present)
compile Compile contract source files
config Set user-level configuration options
console Run a console with contract abstractions and commands
available
create Helper to create new contracts, migrations and tests
debug Interactively debug any transaction on the blockchain
(experimental)
deploy (alias for migrate)
develop Open a console with a local development blockchain
exec Execute a JS module within this Truffle environment
help List all commands or provide information about a specific
command
init Initialize new and empty Ethereum project
install Install a package from the Ethereum Package Registry
migrate Run migrations to deploy contracts
networks Show addresses for deployed contracts on each network
obtain Fetch and cache a specified compiler
opcode Print the compiled opcodes for a given contract
publish Publish a package to the Ethereum Package Registry
run Run a third-party command
test Run JavaScript and Solidity tests
unbox Download a Truffle Box, a pre-built Truffle project
version Show version number and exit
watch Watch filesystem for changes and rebuild the project
automatically
See more at http://truffleframework.com/docsWeb3.js
//web3中文文档，使用方式都在文档当中
http://cw.hubwiz.com/card/c/web3.js-1.0/1/2/9/ //新文档
https://web3.tryblockchain.org/Web3.js-api-refrence.html //旧文档
web3.eth.getAccounts()
[
'0xF403C41247461bAa730d01A137bF162f4a5017a7',
'0x39be9593b363be46cDa1fE5aD1D2D75266fC2407',
'0x2A3132C7B50c93cdaD819c144781ed26E2778923',
'0xDa9feF73d080F4aEb29592e8716393e33a4EF266',
'0x4fdEa3A6Cd070475e53d6bD7B3d4CC7CF3C9f260',
'0x32cf15CAd668321B564a4BFe267D34c8a0179694',
'0x8eB5f3be5ACAF382a94f6070455Fb9c73E47606b',
'0xad15971e404a92C5923C2a880ea66EaF35524Db0',
'0xf5d0a4FA670F0F8a3ed942795231bf203D140b3d',
'0xa393d733E8b7087cA737003410cf87225C904D49'
] web3.eth.sendTransaction({from:'0xF403C41247461bAa730d01A137bF162f4a5017a7',to:'0x39be9593b363be46cDa1fE5aD1D2D75266fC2407',value:'1000000'})truffle(develop)> web3.eth.getBalance( '0xf403c41247461baa730d01a137bf162f4a5017a7');
'99999915999998999990'
truffle(develop)> web3.eth.getBalance('0x39be9593b363be46cda1fe5ad1d2d75266fc2407')
'100000000000001000010'web3调用智能合约
1.进入项目目录
>truffle develop
2.编译，部署
>compile
>deploy //得使用合约的地址contract address
Deploying 'Mycontract'
----------------------
> transaction hash: 0x133a140cc4166fffb1360a89712182283513332c6a37d56c3db732a946b829ea
> Blocks: 0 Seconds: 0
> contract address: 0xCDAc9842125f7399bE0492d9f4B40AC69a62b34E
> block number: 5
> block timestamp: 1573567067
> account: 0xF403C41247461bAa730d01A137bF162f4a5017a7
> balance: 99.99172593999899999
> gas used: 103739
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00207478 ETH
3.将atom中的json压缩成一行
https://www.sojson.com/yasuoyihang.html //使用压缩网址
var abi=[{"constant":false,"inputs":[{"internalType":"uint256","name":"x","type":"uint256"},{"internalType":"uint256","name":"y","type":"uint256"}],"name":"Cal","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"}];
定义地址：truffle(develop)> var address="0x6E8253010690046EBc9F48F574Bf83E0d1b53A66"
合约部署：truffle(develop)>var myContract=new web3.eth.Contract(abi,address);
调用方法：truffle(develop)> myContract.methods.myFunction().call();
'2'
// web3.js
var MyContract = new web3.eth.contract(abi, address);
MyContract.methods.myFunction().call()
.then(console.log);
> "Hello!%"unbox项目演示与改造
官方提供了很多基于
truffle
与
react
整合的
dmoe,
我们只需要在官方
Demo
基础上搭
建自己的项目即可
,
官方地址：
http://truffleframework.com/boxes/
从官方下载unbox项目 //这不是一个完整的DAPP只是一个开始
//在node。js中，每个项目都有一个package。json，此类文件类似maven的pom.xml此文件定义了项目所需要的各种配置，和当前项目依赖的资源
//name：定义项目名称，version：定义当前项目的版本
//main:定义当前加载的入口，truffle。js就是truffle框架的核心配置文件
//scripts：制定了当前脚本命令的缩写，npm run dev --》nom run lite-serve
//devDependencies：定义当前项目开发时需要依赖模块(都存储在node_modules)
{
"name": "tutorialtoken",
"version": "1.0.0",
"description": "",
"main": "truffle.js",
"directories": {
"test": "test"
},
"scripts": {
"dev": "lite-server",
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"devDependencies": {
"lite-server": "^2.3.0"
}
}
Zeppelinsolidity搭建标准代币
下载此文件
[C:\Program Files\solidity\demo03]$ cnpm install zeppelin-solidity
鈭?Installed 1 packages
鈭?Linked 0 latest versions
鈭?Run 0 scripts
deprecate zeppelin-solidity@* This package has been renamed to openzeppelin-solidity. Please update your dependency, or you will no longer receive updates.
鈭?All packages installed (1 packages installed from npm registry, used 2s(network 2s), speed 41.34kB/s, json 1(2.89kB), tarball 61.43kB)
pragma solidity >=0.4.21 <0.6.0;
/* import "zeppelin‐solidity/contracts/token/ERC20/StandardToken.sol"; */
import 'zeppelin-solidity/contracts/token/ERC20/StandardToken.sol';
contract TutorialToken is StandardToken {
//代币名称
string public name = "TutorialToken";
//代笔标志
string public symbol = "TT";
/* uint8 public decimals = 2; */ //代笔单位
//指定代币发布数量
uint public INITIAL_SUPPLY = 12000;
//构造函数
constructor() public {
// 继承于父类 BasicToken的属性
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
}
}
//编译
>compile
//部署
>deploy
//重新进入cmd 项目目录下面
>npm run dev
建立Package.json配置文件
https://www.trufflesuite.com/tutorials/robust-smart-contracts-with-openzeppelin