以太坊–部署智能合约到Ganache
以太坊(Ethereum) – 部署智能合约到Ganache
接下来，我们将编译好的智能合约部署到本地的Ganache区块链网络。步骤如下：
更新项目的配置文件，修改网络配置连接到本地区块链网络(Ganache)。
创建迁移脚本，告诉Truffle如何部署智能合约。
运行新创建的迁移脚本，部署智能合约。
1. 更新配置文件
更新项目的配置文件，修改网络配置连接到本地区块链网络(Ganache)。
打开位于项目根目录下的
truffle-config.js文件，修改内容如下：
truffle-config.js文件，修改内容如下：
module.exports = {
networks: {
development: {
host: "127.0.0.1",
port: 7545,
network_id: "*" // Match any network id
}
},
solc: {
optimizer: {
enabled: true,
runs: 200
}
}
}
这些网络配置，包括ip地址、端口等，应该与Ganache的网络配置匹配：
2. 创建迁移脚本
接下来，我们将在
migrations目录中创建迁移脚本，告诉Truffle如何部署智能合约，在该目录中创建文件
2_deploy_contracts.js。
migrations目录中创建迁移脚本，告诉Truffle如何部署智能合约，在该目录中创建文件
2_deploy_contracts.js。
注意，在migrations目录中所有文件都有编号，作用是让Truffle知道执行它们的顺序。
2_deploy_contracts.js文件内容如下：
var MyContract = artifacts.require("./MyContract.sol");
module.exports = function(deployer) {
deployer.deploy(MyContract);
};
上面的代码中：
首先，require了创建的合约，并将其分配给一个名为“MyContract”的变量。
接着，将合约加入部署清单，运行迁移命令时合约将被部署。
3. 执行迁移命令
现在让我们从命令行执行迁移命令， 部署智能合约。
$ truffle migrate
执行详情如下：
G:\qikegu\ethereum\mydapp>truffle migrate
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
Starting migrations...
======================
> Network name: 'development'
> Network id: 5777
> Block gas limit: 0x6691b7
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
> transaction hash: 0xe62fb8a27c9ccc894562fbd7a7797526ad9323ab67a44516ae342642bf4ffcc6
> Blocks: 0 Seconds: 0
> contract address: 0x168A7247B58786edd259502948f5Bf9449C863AD
> block number: 1
> block timestamp: 1568189958
> account: 0x29920e756f41F8e691aE0b12D417C19204371E91
> balance: 99.99477214
> gas used: 261393
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00522786 ETH
> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.00522786 ETH
2_deploy_contracts.js
=====================
Deploying 'MyContract'
----------------------
> transaction hash: 0xe9dcef6f70332e476684e8f93ab96969af53920555161054f1f4bcc6277116fb
> Blocks: 0 Seconds: 0
> contract address: 0x4D3CFaF8457CEA76c0409f989f9870115B4d2d82
> block number: 3
> block timestamp: 1568189959
> account: 0x29920e756f41F8e691aE0b12D417C19204371E91
> balance: 99.98804272
> gas used: 294448
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00588896 ETH
> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.00588896 ETH
Summary
=======
> Total deployments: 2
> final cost: 0.01111682 ETH
receipt:
{ transactionHash:
'0x83be6ef86fe542b3c94ae1dd5f2e04570c199d6b2e7997af60f3d91cda9259ec',
transactionIndex: 0,
blockHash:
'0x6e58c2c77b5998004b8a8c66760ca923814865307c69f1c779673cc2cbca06bc',
blockNumber: 5,
from: '0x29920e756f41f8e691ae0b12d417c19204371e91',
to: '0x4d3cfaf8457cea76c0409f989f9870115b4d2d82',
gasUsed: 33501,
cumulativeGasUsed: 33501,
contractAddress: null,
logs: [],
status: true,
logsBloom:
'0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
v: '0x1c',
r:
'0xdaf1578a7987ec5d4e7d25c4b66f570d97f880b783d3403b54fa7eb30b1ab836',
s:
'0x4024f2b26bab6277cc86da9727a9bccc1ba7832773b9c2781b265f8dd87df46f',
rawLogs: [] },
logs: [] }
可以看到，我们已经将智能合约成功部署到本地的Ganache区块链网络。