Truffle快速入门

摘要：安装运行下载代码创建项目文件夹，运行有以下文件夹编写的智能合约可脚本化的部署文件测试文件的配置文件编译智能合约运行，编译结果会放在注此处用是因为在系统下存在命名冲突的问题。

运行npm install -g truffle

创建项目文件夹MetaCoin，运行truffle unbox metacoin:
有以下文件夹：

contracts/ solidity编写的智能合约

migrations/ 可脚本化的部署文件

test/ 测试文件

truffle.js Truffle的配置文件

运行truffle compile，编译结果会放在buildcontracts

PS D:WebProjMetaCoin> truffle.cmd compile
Compiling .contractsConvertLib.sol...
Compiling .contractsMetaCoin.sol...
Compiling .contractsMigrations.sol...
Writing artifacts to .uildcontracts

注：此处用truffle.cmd是因为在Windows系统下存在“命名冲突”的问题。

运行Truffle Develop：truffle develop，会给出10个账号和私钥供本地开发使用

PS D:WebProjMetaCoin> truffle.cmd develop
Truffle Develop started at http://127.0.0.1:9545/

Accounts:
(0) 0x627306090abab3a6e1400e9345bc60c78a8bef57
(1) 0xf17f52151ebef6c7334fad080c5704d77216b732
(2) 0xc5fdf4076b8f3a5357c5e395ab970b5b54098fef
(3) 0x821aea9a577a9b44299b9c15c88cf3087f3b5544
(4) 0x0d1d4e623d10f9fba5db95830f7d3839406c6af2
(5) 0x2932b7a2355d6fecc4b5c0b6bd44cc31df247a2e
(6) 0x2191ef87e392377ec08e7c08eb105ef5448eced5
(7) 0x0f4f2ac550a1b4e2280d04c21cea7ebd822934b5
(8) 0x6330a553fc93768f612722bb8c2ec78ac90b3bbc
(9) 0x5aeda56215b167893e80b4fe645ba6d5bab767de

Private Keys:
(0) c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3
(1) ae6ae8e5ccbfb04590405997ee2d52d2b330726137b875053c36d94e974d162f
(2) 0dbbe8e4ae425a6d2687f1a7e3ba17bc98c673636790f1b8ad91193c05875ef1
(3) c88b703fb08cbea894b6aeff5a544fb92e78a18e19814cd85da83b71f772aa6c
(4) 388c684f0ba1ef5017716adb5d21a053ea8e90277d0868337519f97bede61418
(5) 659cbb0e2411a44db63778987b1e22153c086a95eb6b18bdf89de078917abc63
(6) 82d052c865f5763aad42add438569276c00d3d88a2d062d36b2bae914d58b8c8
(7) aa3680d5d48a8283413f7a108367c7299ca73f553735860a87b08f39395618b7
(8) 0f62d96d6675f32685bbdb8ac13cda7c23436f63efbb9d07700d8669ff12b7c4
(9) 8d5366123cb560bb606379f90a0bfd4769eecc0557f1b362dcae9012b548b1e5

在Truffle Develop的运行环境下，命令行可以省略truffle，运行migrate，会显示交易的ID和部署的智能合约的地址

truffle(develop)> migrate
Using network "develop".

Running migration: 1_initial_migration.js
  Deploying Migrations...
  ... 0x7511b275f23246e33a6d237fe7fafe7d5dbaf6701fbf303261f537612d07d8ce
  Migrations: 0x8cdaf0cd259887258bc13a92c0a6da92698644c0
Saving successful migration to network...
  ... 0xd7bc86d31bee32fa3988f1c1eabce403a1b5d570340a3a9cdba53a472ee8c956
Saving artifacts...
Running migration: 2_deploy_contracts.js
  Deploying ConvertLib...
  ... 0xf1c4d6b2a2cb9794736126efb22b92c59639922b3c5148e865cad6ea718763bf
  ConvertLib: 0x345ca3e014aaf5dca488057592ee47305d9b3e10
  Linking ConvertLib to MetaCoin
  Deploying MetaCoin...
  ... 0x62e45f7449346fee74988af28dacca2d4a3f5c9f90a323fcdc5eecf8269d04db
  MetaCoin: 0xf25186b5081ff5ce73482ad761db0eb0d25abfbf
Saving successful migration to network...
  ... 0x059cf1bbc372b9348ce487de910358801bbbd1c89182853439bec0afaee6c7db
Saving artifacts..

GANACHE其实是一个有图形界面的Truffle Develop客户端

下载GANACHE

修改truffle.js的配置:

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "*"
    }
  }
};

启动GANACHE

在控制台输入truffle migrate

结果类似于上节相应的操作

点击“Transaction”按钮可以查看交易的详细过程。

查看账户0的metacoin的余额：

MetaCoin.deployed().then(function(instance){return instance.getBalance(web3.eth.accounts[0]);}).then(function(value){return value.toNumber()});

运行结果：

10000

查看账户0的metacoin的余额的ether价值：

MetaCoin.deployed().then(function(instance){return instance.getBalanceInEth(web3.eth.accounts[0]);}).then(function(value){return value.toNumber()});

运行结果：

20000

因为在这个例子中，一个metacoin值2个ether

从账户0转账500个metacoin给账户1

MetaCoin.deployed().then(function(instance){return instance.sendCoin(web3.eth.accounts[1], 500);});

运行结果：

{ tx: "0xa6c465de6c68c8fa29b1a7020006715d2749381421376d72ae1a1d2f6803a695",
  receipt:
   { transactionHash: "0xa6c465de6c68c8fa29b1a7020006715d2749381421376d72ae1a1d2f6803a695",
     transactionIndex: 0,
     blockHash: "0xaf22cbe2b46d253a7af9c5554a903d1923344a23992896093c3ba7faeb6de24e",
     blockNumber: 6,
     gasUsed: 51057,
     cumulativeGasUsed: 51057,
     contractAddress: null,
     logs: [ [Object] ],
     status: "0x01",
     logsBloom: "0x000000000000000000000000000000000100000000000000000000100000000000000000000000200000000000000000000000000
0000000000000000000000000000000000000001000000800000000000000000000000000008000000000000000000000000000000000000000000000000
0000000000000000010000000000000000000010000000000000000000000000000000000000000010000000002000000000000000000000000000000000
0000020000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000" },
  logs:
   [ { logIndex: 0,
       transactionIndex: 0,
       transactionHash: "0xa6c465de6c68c8fa29b1a7020006715d2749381421376d72ae1a1d2f6803a695",
       blockHash: "0xaf22cbe2b46d253a7af9c5554a903d1923344a23992896093c3ba7faeb6de24e",
       blockNumber: 6,
       address: "0xf25186b5081ff5ce73482ad761db0eb0d25abfbf",
       type: "mined",
       event: "Transfer",
       args: [Object] } ] }

查看账户1转账后的余额

MetaCoin.deployed().then(function(instance){return instance.getBalance(web3.eth.accounts[1]);}).then(function(value){return value.toNumber()});

运行结果：

500

查看账户0转账后的余额

MetaCoin.deployed().then(function(instance){return instance.getBalance(web3.eth.accounts[0]);}).then(function(value){return value.toNumber()});

运行结果：

9500