以太坊联盟链quorum搭建（二）
本篇文章介绍通过truffle来部署智能合约。
1、首先需要有一个联盟链quorum的环境，如上篇文章所示。
2、部署合约，这里介绍两种方法，一是教程里的使用solc编译，获取编译后的abi和bytecode，然后在geth控制台里部署；第二种方法是使用truffle直接部署。
下面分别介绍：
（1）使用solc编译
智能合约文件：simplestorage.sol
pragma solidity ^0.4.15;
contract simplestorage {
uint public storedData;
function simplestorage(uint initVal) public {
storedData = initVal;
}
function set(uint x) public {
storedData = x;
}
function get() constant public returns(uint retVal) {
return storedData;
}
}编译：
solcjs --bin --abi simplestorage.sol会生成两个文件： simplestorage_sol_simplestorage.abi 和 simplestorage_sol_simplestorage.bin分别是abi和bytecode，在部署时会用到。（或者使用在线编译器remix，更加方便）
然后进入geth客户端（第一个节点）：
geth attach qdata/dd1/geth.ipc然后在部署合约和调用合约：
> var abi = [{"constant":true,"inputs":[],"name":"storedData","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"x","type":"uint256"}],"name":"set","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"retVal","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"initVal","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]
undefined
> var bytecode = "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"
undefined
> var simpleContract = web3.eth.contract(abi);
undefined
> simpleContract.new(42, {from:web3.eth.accounts[0], data: bytecode, gas: 0x47b760, privateFor: ["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]})
{
abi: [{
constant: true,
inputs: [],
name: "storedData",
outputs: [{...}],
payable: false,
stateMutability: "view",
type: "function"
}, {
constant: false,
inputs: [{...}],
name: "set",
outputs: [],
payable: false,
stateMutability: "nonpayable",
type: "function"
}, {
constant: true,
inputs: [],
name: "get",
outputs: [{...}],
payable: false,
stateMutability: "view",
type: "function"
}, {
inputs: [{...}],
payable: false,
stateMutability: "nonpayable",
type: "constructor"
}],
address: undefined,
transactionHash: "0x5c7fc60d8370bed6eb14e3f776365f77806eda9653e6a3f682827f68e056c0f8"
}部署成功，其中simpleContract.new中
privateFor: ["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]}INFO [06-07|19:57:38] Submitted contract creation fullhash=0x5c7fc60d8370bed6eb14e3f776365f77806eda9653e6a3f682827f68e056c0f8 to=0x4D3bfd7821E237fFE84209d8E638f9f309865b87to后面的地址就是合约的地址，
> var private = eth.contract(abi).at("0x4D3bfd7821E237fFE84209d8E638f9f309865b87")
undefined
> private.get()
42然后节点2调用合约，同样需要地址和abi来加载合约，执行结果：
> private.get()
0节点7执行合约：
> private.get()
42> private.set(65656, {from:eth.coinbase, privateFor:["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]})
"0xb42a5483ef98f6a7b3dc35d7ffaaf0170360de63fb7d14c8514532906fb10395"
> private.get()
65656同样在节点2和节点7获取修改的值，结果分别为0和65656
到此，部署和调用智能合约结束。
（2）下面介绍使用truffle来部署智能合约(这里使用truffle主要是编译和部署合约)
新建一个目录test，然后进入目录初始化一个truffle项目：
truffle init
然后在contracts目录中编写智能合约：
pragma solidity ^0.4.15;
contract simplestorage {
uint public storedData;
function simplestorage(uint initVal) public {
storedData = initVal;
}
function set(uint x) public {
storedData = x;
}
function get() constant public returns(uint retVal) {
return storedData;
}
}在test目录下编译合约：
truffle compile
部署合约：
在migrations文件夹里添加新的部署文件：
2_deploy_simplestorage.js
var simple_storage = artifacts.require("SimpleStorage");
module.exports = function(deployer) {
deployer.deploy(simple_storage, 123, {privateFor:["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]});
};修改truffle.js文件：
module.exports = {
networks: {
development: {
host: "localhost",
port: 22000,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
second_node: {
host: "localhost",
port: 22001,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
third_node: {
host: "localhost",
port: 22002,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
forth_node: {
host: "localhost",
port:22003,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
fifth_node:{
host: "localhost",
port: 22004,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
sixth_node: {
host: "localhost",
port: 22005,
network_id: "*",
gas: 4600000,
gasPrice: 0
},
seventh_node: {
host: "localhost",
port: 22006,
network_id: "*",
gas: 4600000,
gasPrice: 0
}
}
};在test目录下执行命令：truffle migrate --network development --reset
>truffle migrate --network development --reset
Running migration: 1_initial_migration.js
Replacing Migrations...
... 0x3d22b37608222c33cf2485bbcd746f46979e76e2c31f1be96571098a958f230f
Migrations: 0xd9d64b7dc034fafdba5dc2902875a67b5d586420
Saving successful migration to network...
... 0x7b6d86cadb782c0e41a35f6ebd64dd4650ccb7a7a11f6b07e63df6fcaba2311e
Saving artifacts...
Running migration: 2_deploy_simplestorage.js
Replacing simplestorage...
... 0x43ad5af6cf9276a78febde309b7f214af988797d62fb9ecc71f7a879cbbc6306
simplestorage: 0x938781b9796aea6376e40ca158f67fa89d5d8a18
Saving successful migration to network...
... 0xb9dce27942015a3a93b0f6475cc3ef59b1bc82405b90faaaa4053e8eeb835886
Saving artifacts...其中倒数第四行中是合约的地址。
3、进入geth控制台
geth attach qdata/dd1/geth.ipc
合约地址和abi加载合约，再调用。这里就和上面方法一样了，不再重复。