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這篇文章主要介紹“以太坊智能合約部署與交互的方法是什么”，在日常操作中，相信很多人在以太坊智能合約部署與交互的方法是什么問(wèn)題上存在疑惑，小編查閱了各式資料，整理出簡(jiǎn)單好用的操作方法，希望對(duì)大家解答”以太坊智能合約部署與交互的方法是什么”的疑惑有所幫助！接下來(lái)，請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧！
啟動(dòng)容器來(lái)執(zhí)行g(shù)eth命令
root@ubu-blockchain2:~# docker run -i blockchain101/ethereum-geth:1.6.5 geth attach http://45.32.252.88:8201Welcome to the Geth JavaScript console!instance: Geth/01/v1.6.5-stable/linux-amd64/go1.8 coinbase: 0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a at block: 6064 (Wed, 02 Aug 2017 01:13:50 UTC) datadir: /ethcluster/779977/data/01 modules: admin:1.0 eth:1.0 net:1.0 rpc:1.0 web3:1.0
查看我們的賬戶和余額
eth.getBalance(eth.accounts[0])11000000000000000000eth.getBalance(eth.accounts[1])0eth.accounts[0]"0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a"> eth.accounts[1]"0xe82e2f0a5abd8774767b9751659976f9c4f59181"
發(fā)起一筆交易
eth.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:web3.toWei(3,'ether')})
"0x0075da712d26aea17d6647035107f509e13eaf3d113c1577db14d4cc4216caec"查看交易細(xì)節(jié)
> eth.getTransaction("0x0075da712d26aea17d6647035107f509e13eaf3d113c1577db14d4cc4216caec")
{
blockHash: "0x3115703894dc6015c96ef4de3e5615f416498ca1f985902b38cd70e27dab8871", blockNumber: 1250, from: "0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a", gas: 90000, gasPrice: 18000000000, hash: "0x0075da712d26aea17d6647035107f509e13eaf3d113c1577db14d4cc4216caec", input: "0x", nonce: 0, r: "0x2aef2c1fa03a0fa4172d21e3383d8c0431d45ec855b9d16efdd5eb2de90c414c", s: "0xc4d530fb7902bf509fe56bfbea4861bf6cc16791afc9c9103c1a18f77407d1f", to: "0xe82e2f0a5abd8774767b9751659976f9c4f59181", transactionIndex: 0, v: "0x17cdb6", value: 3000000000000000000 }
> eth.getBalance(eth.accounts[1])
3000000000000000000驗(yàn)證用戶0的余額
> eth.getBalance(eth.accounts[0])7999622000000000000
編寫一個(gè)簡(jiǎn)單的合約
contract Sample {uint public value;
function Sample(uint v){value=v;
}
function set(uint v){value=v;
}
function get() constant returns (uint){return value;
}
}在remix網(wǎng)頁(yè)編譯得到ABI接口和合約的二進(jìn)制代碼、
abi=[{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"v","type":"uint256"}],"name":"set","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"v","type":"uint256"}],"payable":false,"type":"constructor"}]
[{
constant: true,
inputs: [],
name: "value",
outputs: [{
name: "",
type: "uint256"}],
payable: false,
type: "function"}, {
constant: false,
inputs: [{
name: "v",
type: "uint256"}],
name: "set",
outputs: [],
payable: false,
type: "function"}, {
constant: true,
inputs: [],
name: "get",
outputs: [{
name: "",
type: "uint256"}],
payable: false,
type: "function"}, {
inputs: [{
name: "v",
type: "uint256"}],
payable: false,
type: "constructor"}]需要使用eth.contract來(lái)定義一個(gè)合約類
> sample=eth.contract(abi)
{
abi: [{
constant: true,
inputs: [],
name: "value",
outputs: [{...}],
payable: false, type: "function"
}, {
constant: false,
inputs: [{...}],
name: "set",
outputs: [],
payable: false, type: "function"
}, {
constant: true,
inputs: [],
name: "get",
outputs: [{...}],
payable: false, type: "function"
}, {
inputs: [{...}],
payable: false, type: "constructor"
}],
eth: {
accounts: ["0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a", "0xe82e2f0a5abd8774767b9751659976f9c4f59181"],
blockNumber: 6225,
coinbase: "0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a",
compile: {
lll: function(),
serpent: function(),
solidity: function()},
defaultAccount: undefined,
defaultBlock: "latest",
gasPrice: 18000000000,
hashrate: 0,
mining: false,
pendingTransactions: [],
protocolVersion: "0x3f",
syncing: false,
call: function(),
contract: function(abi),
estimateGas: function(),
filter: function(fil, callback),
getAccounts: function(callback),
getBalance: function(),
getBlock: function(),
getBlockNumber: function(callback),
getBlockTransactionCount: function(),
getBlockUncleCount: function(),
getCode: function(),
getCoinbase: function(callback),
getCompilers: function(),
getGasPrice: function(callback),
getHashrate: function(callback),
getMining: function(callback),
getPendingTransactions: function(callback),
getProtocolVersion: function(callback),
getRawTransaction: function(),
getRawTransactionFromBlock: function(),
getStorageAt: function(),
getSyncing: function(callback),
getTransaction: function(),
getTransactionCount: function(),
getTransactionFromBlock: function(),
getTransactionReceipt: function(),
getUncle: function(),
getWork: function(),
iban: function(iban),
icapNamereg: function(),
isSyncing: function(callback),
namereg: function(),
resend: function(),
sendIBANTransaction: function(),
sendRawTransaction: function(),
sendTransaction: function(),
sign: function(),
signTransaction: function(),
submitTransaction: function(),
submitWork: function()
},
at: function(address, callback),
getData: function(),
new: function()}合約的二進(jìn)制代碼賦值給SampleHEX方便使用
SampleHEX="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"
把合約代碼部署上鏈
> thesample=sample.new(1,{from:eth.accounts[0],data:SampleHEX,gas:3000000})
{
abi: [{
constant: true,
inputs: [],
name: "value",
outputs: [{...}],
payable: false,
type: "function"
}, {
constant: false,
inputs: [{...}],
name: "set",
outputs: [],
payable: false,
type: "function"
}, {
constant: true,
inputs: [],
name: "get",
outputs: [{...}],
payable: false,
type: "function"
}, {
inputs: [{...}],
payable: false,
type: "constructor"
}],
address: undefined,
transactionHash: "0xee74bcb4461c9712ec9aca96a5a3a4c3c64be1213854d519fc8e5432b554f7a1"}查看交易細(xì)節(jié)
> samplerecpt=eth.getTransactionReceipt("0xee74bcb4461c9712ec9aca96a5a3a4c3c64be1213854d519fc8e5432b554f7a1")
{
blockHash: "0xddba16545af882835fb9a69a0e5f3b9287c61664837d5ea0068b38575cb665c5",
blockNumber: 6246,
contractAddress: "0x7504fa9d64ab290844b82660d43b310f8fba0276",
cumulativeGasUsed: 141836, from: "0x4c57e7e9c2f728046ddc6e96052056a241bdbd0a",
gasUsed: 141836,
logs: [],
logsBloom: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
root: "0xd1093ecaca9cc0d10e82a533a15feccedf7ff5c79fb3ebd9366ec0b35dbef478", to: null,
transactionHash: "0xee74bcb4461c9712ec9aca96a5a3a4c3c64be1213854d519fc8e5432b554f7a1",
transactionIndex: 0}合約命名
> samplecontract=sample.at("0x7504fa9d64ab290844b82660d43b310f8fba0276")
{
abi: [{
constant: true,
inputs: [],
name: "value",
outputs: [{...}],
payable: false,
type: "function"
}, {
constant: false,
inputs: [{...}],
name: "set",
outputs: [],
payable: false,
type: "function"
}, {
constant: true,
inputs: [],
name: "get",
outputs: [{...}],
payable: false,
type: "function"
}, {
inputs: [{...}],
payable: false,
type: "constructor"
}],
address: "0x7504fa9d64ab290844b82660d43b310f8fba0276",
transactionHash: null,
allEvents: function(),
get: function(),
set: function(),
value: function()
}合約查看功能函數(shù)get（）,然后調(diào)用set()函數(shù)，再get()查看時(shí)已經(jīng)改變了
samplecontract.get.call()1> samplecontract.set.sendTransaction(9, {from:eth.accounts[0], gas:3000000})"0x822ee6fb4caceb7e844c533f7f3bc57806f7cb3676fb3066eb848cca46b2f38a"> samplecontract.get.call()9我們?cè)俅蜷_(kāi)一個(gè)終端，打開(kāi)cluster1的peer02的控制臺(tái)，直接at到上一個(gè)終端部署的智能合約地址并進(jìn)行set操作
root@ubu-blockchain2:~/ethereum-docker/ethereum-docker/ethereum-testnet-docker/dockercomposefiles# docker run -i blockchain101/ethereum-geth:1.6.5 geth attach http://45.32.252.88:9201Welcome to the Geth JavaScript console!
> abi=[{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"v","type":"uint256"}],"name":"set","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"v","type":"uint256"}],"payable":false,"type":"constructor"}]
> sample=eth.contract(abi)SampleHEX="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"直接把合約地址賦值并進(jìn)行set操作
samplecontract=sample.at("0x7504fa9d64ab290844b82660d43b310f8fba0276")
> samplecontract.get.call()9簡(jiǎn)單的方法來(lái)了。智能合約的部署需要編譯，這里用在線編譯：
https://ethereum.github.io/browser-solidity/#version=soljson-v0.4.14+commit.c2215d46.js
修改編譯好的abi和對(duì)象名稱：
這里在網(wǎng)上找了個(gè)代幣的只能合約，可以進(jìn)行充值、轉(zhuǎn)賬和查詢，issue 函數(shù)可以向充值以太到合約賬戶，transfer 函數(shù)可以向其他賬號(hào)發(fā)送token，getBalance 函數(shù)可以獲取某個(gè)賬號(hào)的token余額，代碼如下：
pragma solidity ^0.4.2;
contract Token {
address issuer;
mapping (address => uint) balances;
event Issue(address account, uint amount);
event Transfer(address from, address to,uint amount); function Token() {
issuer = msg.sender;
} function issue(address account, uintamount) { if (msg.sender != issuer) throw;
balances[account] += amount;
} function transfer(address to, uint amount){ if (balances[msg.sender] < amount)throw;
balances[msg.sender] -= amount;
balances[to] += amount;
Transfer(msg.sender, to, amount);
} function getBalance(address account)constant returns (uint) { return balances[account];
}
}修改編譯好的gas和對(duì)象名稱：
varbrowser_untitled_sol_tokenContract =web3.eth.contract([{"constant":false,"inputs":[{"name":"account","type":"address"},{"name":"amount","type":"uint256"}],"name":"issue","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"amount","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"account","type":"address"}],"name":"getBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[],"payable":false,"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"account","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"Issue","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"from","type":"address"},{"indexed":false,"name":"to","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"Transfer","type":"event"}]);var token =browser_untitled_sol_tokenContract.new(
{
from: web3.eth.accounts[0],
data:'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',
gas: '4300000'
}, function (e, contract){
console.log(e, contract);if (typeof contract.address !=='undefined') {
console.log('Contract mined! address:' + contract.address + ' transactionHash: ' + contract.transactionHash);
}
})此時(shí)輸入合約部署的實(shí)例a_demotypes, 可以看到a_demotypes的詳情。
控制臺(tái)調(diào)用
> a_demotypes
{
abi: [{
constant: false,
inputs: [{...}],
name: "f",
outputs: [{...}],
payable: false,
type: "function"
}],
address: "0x54ed7a5f5a63ddada3bfe83b3e632adabaa5fc2f",
transactionHash: "0x69cde62bcd6458e14f40497f4840f422911d63f5dea2b3a9833e6810db64a1c9",
allEvents: function(),
f: function()
}這里重點(diǎn)就是address表示的是合約的地址，你會(huì)發(fā)現(xiàn)這個(gè)和賬號(hào)的信息結(jié)果一樣，其實(shí)你也可以把這個(gè)合約地址看做是一個(gè)賬號(hào)地址，后面我們外部調(diào)用到的就是這個(gè)合約地址。
充值token.issue.sendTransaction(eth.accounts[0],100, {from: eth.accounts[0]});
發(fā)送 tokentoken.transfer(eth.accounts[1], 30, {from:eth.accounts[0]})
查看余額token.getBalance()
控制臺(tái)調(diào)用就不多說(shuō)，和Java對(duì)象調(diào)用一樣，直接調(diào)用即可外部接口與智能合約交互
以太坊對(duì)外提供的有很多接口JSON RPC接口，web3接口，這里我們用JSON RPC接口。
合約交互的原理
合約的交互都是一次交易，而我們要做的就是把要調(diào)用的方法和參數(shù)按照api規(guī)定的以參數(shù)的形式向區(qū)塊請(qǐng)求一次交易，ethereum接收到我們的請(qǐng)求后通過(guò)解析傳遞的參數(shù)來(lái)執(zhí)行相關(guān)的合約代碼。
RPC接口給我們提供了倆個(gè)方法：eth_sendTransaction和eth_call。
eth_sendTransaction Createsnew message call transaction or a contract creation, if the data field containscode. ParametersObject - The transaction objectfrom: DATA, 20 Bytes - The address the transaction is send from.to: DATA, 20 Bytes - (optional when creating new contract) The address the transaction is directed to. gas: QUANTITY - (optional, default: 90000) Integer of the gas provided for the transaction execution. It will return unused gas. gasPrice: QUANTITY - (optional, default: To-Be-Determined) Integer of the gasPrice used for each paid gas value: QUANTITY - (optional) Integer of the value send with this transaction data: DATA - The compiled code of a contract OR the hash of the invoked method signature and encoded parameters. For details see Ethereum Contract ABI nonce: QUANTITY - (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce.
可以看到，如果我們創(chuàng)建的為合約時(shí)，我們只需要from,to(文檔上寫的是可選的，但是實(shí)際操作中沒(méi)有to為null的話合約不能正常執(zhí)行，建議還是加上，這個(gè)值就是前面我們部署合約后生成的合約address),data。Data的屬性的值具體可以看Contract ABI。這里大概說(shuō)下：
Data的值相對(duì)來(lái)說(shuō)不是固定的，具體怎么生成與合約的參數(shù)類型，參數(shù)數(shù)量都有關(guān)聯(lián)。這里我們以部署的token合約的三個(gè)方法為例：
充值issue (address account, uint amount)
這個(gè)方法有倆個(gè)參數(shù)，address充值賬號(hào)，uint充值數(shù)量。
根據(jù)Contract ABI，data值應(yīng)該為方法名的sha3的前8個(gè)字節(jié)+參數(shù)的64字節(jié)，不夠前面補(bǔ)充為0。
這里方法名并不是issue (address account, uint amount)而是issue(address,uint256)的sha3值。
web3.sha3("issue(address,uint256)")"0x867904b44b606800f6f10498e11292d04ea19bfc7fe4bc0f1695aa516381f73d"我們往第一個(gè)賬號(hào)充值10，這里的數(shù)據(jù)不是以太幣，而是我們自己創(chuàng)建的代幣。
eth.accounts[0]"0x0cc9684af605bae10de801218321c1336bb62946"
將10轉(zhuǎn)換為16進(jìn)制為
000000000000000000000000000000000000000000000000000000000000000a
那么data的數(shù)據(jù)為：
0x867904b4000000000000000000000000fdf57e81872562a6112656f961944ce821fdf7eb000000000000000000000000000000000000000000000000000000000000000a
那么最后我們調(diào)用eth_sendTransaction方法傳遞參數(shù)JSON對(duì)象為：
{
from:0xfdf57e81872562a6112656f961944ce821fdf7eb, to:0x7fe133950fc010ce41322d88f64f1918b9abb3a3, data: 0x867904b4000000000000000000000000fdf57e81872562a6112656f961944ce821fdf7eb000000000000000000000000000000000000000000000000000000000000000a }返回：此交易的hash值,此時(shí)該交易還沒(méi)有執(zhí)行，只是創(chuàng)建，還需要礦工通過(guò)挖礦才能完成。
調(diào)用接口方法：
JsonRpcHttpClient client = newJsonRpcHttpClient(new URL(“http://127.0.0.1:8545”));Object result = client.invoke(methodName,params, Object.class);
通過(guò)控制臺(tái)查看第一個(gè)賬號(hào)已有代幣：
token.getbalance(eth.accounts[0])
執(zhí)行調(diào)用接口代碼。返回交易hash值：
0x2013764d1c3fea680f9015353497aa5f9f8d61580a3bd0524b3613b34329c095
此時(shí)控制臺(tái)輸入：
交易和充值一樣，需要注意的是代幣轉(zhuǎn)出賬號(hào)為from屬性的值，代幣轉(zhuǎn)入賬號(hào)為data屬性里的值，to對(duì)應(yīng)的是合約地址。
eth_call
Executes anew message call immediately without creating a transaction on the block chain. Parameters Object - The transaction call objectfrom: DATA, 20 Bytes - (optional) The address the transaction is sent from.to: DATA, 20 Bytes - The address the transaction is directed to. gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions. gasPrice: QUANTITY - (optional) Integer of the gasPrice used for each paid gas value: QUANTITY - (optional) Integer of the value send with this transactiondata: DATA - (optional) Hash of the method signature and encoded parameters. For details seeEthereum Contract ABI QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter
這個(gè)方法返回一條信息給我們，相當(dāng)于數(shù)據(jù)庫(kù)的查詢功能，參數(shù)也是三個(gè)，from,to,data，數(shù)據(jù)格式都是一樣的。
查詢getBalance(address account)
查詢方法hash碼：
web3.sha3("getBalance(address)")"0xf8b2cb4f3943230388faeee074f1503714bff212640051caba01411868d14ae3"查詢我們上一步充值的賬號(hào)，那么傳遞的參數(shù)data為：
0xf8b2cb4f000000000000000000000000fdf57e81872562a6112656f961944ce821fdf7eb
eth_call方法最后參數(shù)為：
{
from: 0xfdf57e81872562a6112656f961944ce821fdf7eb, to:0x7fe133950fc010ce41322d88f64f1918b9abb3a3, data:0xf8b2cb4f000000000000000000000000fdf57e81872562a6112656f961944ce821fdf7eb }注意，這個(gè)方法需要倆參數(shù)，處理一個(gè)JSONobject外，還有一個(gè)字符串參數(shù)，這倆可以為“”或者”latest”, “earliest” or “pending”
調(diào)用接口返回一個(gè)16進(jìn)制字符串：
0x0000000000000000000000000000000000000000000000000000000000000071就是該賬號(hào)的代幣數(shù)量，轉(zhuǎn)換為十進(jìn)制為：113，與控制查詢一致。
這就是一個(gè)智能合約的交互過(guò)程。是不是很簡(jiǎn)單啊。
到此，關(guān)于“以太坊智能合約部署與交互的方法是什么”的學(xué)習(xí)就結(jié)束了，希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí)，快去試試吧！若想繼續(xù)學(xué)習(xí)更多相關(guān)知識(shí)，請(qǐng)繼續(xù)關(guān)注億速云網(wǎng)站，小編會(huì)繼續(xù)努力為大家?guī)?lái)更多實(shí)用的文章！
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