开源工具和语言
一、brewMacOS包管理器
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
二、Solidity以太坊智能合约语言
brew install solidity
备注：安装时间可能有点长，请耐心等待… 备注：安装时间可能有点长，请耐心等待… 备注：安装时间可能有点长，请耐心等待…
如果碰见下面的错误，请移步：http://blog.csdn.net/Sico2Sico/article/details/71082130
The GitHub credentials in the macOS keychain may be invalid.
Clear them with:
printf "protocol=https\nhost=github.com\n" | git credential-osxkeychain erase
Or create a personal access token:
https://github.com/settings/tokens/new?scopes=gist,public_repo&description=Homebrew
三、geth运行以太坊节点
liyuechun:Downloads yuechunli$ cd go-ethereum-1.5.9
liyuechun:go-ethereum-1.5.9 yuechunli$ pwd
/Users/liyuechun/Downloads/go-ethereum-1.5.9
liyuechun:go-ethereum-1.5.9 yuechunli$ make geth
建立私链
1. 创建一个文件夹来存储你的私链数据
liyuechun:1015 yuechunli$ mkdir privchain
liyuechun:1015 yuechunli$ pwd
/Users/liyuechun/Desktop/1015
liyuechun:1015 yuechunli$ ls
privchain
liyuechun:1015 yuechunli$
2. 使用geth来加载
geth --rpc --rpcaddr 127.0.0.1 --rpcport 8545 --dev --datadir privchain
执行上面的命令，你应该能看到下面的信息：
INFO [10-15 03:14:50] IPC endpoint opened: /Users/liyuechun/Desktop/1015/privchain/geth.ipc INFO [10-15 03:14:50] HTTP endpoint opened: http://127.0.0.1:8545
如果你切换到
privchain文件夹里面，你会看到geth, geth.ipc, 和 keystore。liyuechun:1015 yuechunli$ cd privchain/
liyuechun:privchain yuechunli$ ls
geth geth.ipc keystore
liyuechun:privchain yuechunli$
- 保持节点的运行，不要关闭终端，重新打开一个终端，使用
geth attach连接节点，并且打开geth console
liyuechun:privchain yuechunli$ geth attach ipc:/Users/liyuechun/Desktop/1015/privchain/geth.ipc
Welcome to the Geth JavaScript console!
instance: Geth/v1.7.1-stable-05101641/darwin-amd64/go1.9.1
modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 shh:1.0 txpool:1.0 web3:1.0
>
3. 相关api命令
查看账户
> personal.listAccounts
[]
>
创建账户
> personal.newAccount('liyuechun')
"0xb6d7d842e7dc9016fa6900a183b2be26fc90b2d8"
>
PS：里面的
liyuechun是你账户的密码，输入你自己喜欢的密码。
查看账户
> personal.listAccounts
["0xb6d7d842e7dc9016fa6900a183b2be26fc90b2d8"]
>
4. web3命令
> web3.eth.coinbase
"0xb6d7d842e7dc9016fa6900a183b2be26fc90b2d8"
>
5. 编写智能合约代码
pragma solidity ^0.4.4;
contract test {
function multiply(uint a) returns(uint d){
return a * 7;
}
}
6. 获取智能合约字节码和abi
代码拷贝到https://remix.ethereum.org，编译，然后拷贝字节码。
6060604052341561000f57600080fd5b5b60ab8061001e6000396000f30060606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029
{
"contract_name": "test",
"abi": [
{
"constant": false,
"inputs": [
{
"name": "a",
"type": "uint256"
}
],
"name": "multiply",
"outputs": [
{
"name": "d",
"type": "uint256"
}
],
"payable": false,
"type": "function"
}
],
"unlinked_binary": "0x60606040523415600e57600080fd5b5b60978061001d6000396000f300606060405263ffffffff7c0100000000000000000000000000000000000000000000000000000000600035041663c6888fa18114603c575b600080fd5b3415604657600080fd5b604f6004356061565b60405190815260200160405180910390f35b600781025b9190505600a165627a7a723058203da73c4161a1751d52899e2da724076a62a935cb5e7ed4b29f7f49560675ab8d0029",
"networks": {},
"schema_version": "0.0.5",
"updated_at": 1508016118593
}
7. 在bejson中转义成字符串
{\"contract_name\":\"test\",\"abi\":[{\"constant\":false,\"inputs\":[{\"name\":\"a\",\"type\":\"uint256\"}],\"name\":\"multiply\",\"outputs\":[{\"name\":\"d\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"}],\"unlinked_binary\":\"0x60606040523415600e57600080fd5b5b60978061001d6000396000f300606060405263ffffffff7c0100000000000000000000000000000000000000000000000000000000600035041663c6888fa18114603c575b600080fd5b3415604657600080fd5b604f6004356061565b60405190815260200160405180910390f35b600781025b9190505600a165627a7a723058203da73c4161a1751d52899e2da724076a62a935cb5e7ed4b29f7f49560675ab8d0029\",\"networks\":{},\"schema_version\":\"0.0.5\",\"updated_at\":1508016118593}
7. 通过abi创建合约对象
> var contractInfo = JSON.parse('{\"contract_name\":\"test\",\"abi\":[{\"constant\":false,\"inputs\":[{\"name\":\"a\",\"type\":\"uint256\"}],\"name\":\"multiply\",\"outputs\":[{\"name\":\"d\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"}],\"unlinked_binary\":\"0x60606040523415600e57600080fd5b5b60978061001d6000396000f300606060405263ffffffff7c0100000000000000000000000000000000000000000000000000000000600035041663c6888fa18114603c575b600080fd5b3415604657600080fd5b604f6004356061565b60405190815260200160405180910390f35b600781025b9190505600a165627a7a723058203da73c4161a1751d52899e2da724076a62a935cb5e7ed4b29f7f49560675ab8d0029\",\"networks\":{},\"schema_version\":\"0.0.5\",\"updated_at\":1508016118593}')
> myContract = web3.eth.contract(contractInfo.abi)
{
abi: [{
constant: false,
inputs: [{...}],
name: "multiply",
outputs: [{...}],
payable: false,
type: "function"
}],
eth: {
accounts: ["0x2abf46d8b0d940cdeedd55872bc0648add40227d"],
blockNumber: 384,
coinbase: "0x2abf46d8b0d940cdeedd55872bc0648add40227d",
compile: {
lll: function(),
serpent: function(),
solidity: function()
},
defaultAccount: undefined,
defaultBlock: "latest",
gasPrice: 0,
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()
}
8. 检查coinbase账号余额
> account1 = web3.eth.coinbase
"0x2abf46d8b0d940cdeedd55872bc0648add40227d"
> web3.eth.getBalance(account1)
0
>
如果余额大于0，继续，否则，开始挖矿。
> miner.start();
null
>
挖矿过程中，切换到节点终端，你会发现一直在挖矿。
如果你觉得差不多了，可以运行下面的命令停止挖矿。
miner.stop();
9. 停止挖矿，并且查余额
> miner.start();
null
> miner.stop();
true
> web3.eth.getBalance(account1)
1.152e+21
>
10. 解锁coinbase账号，我们通过coinbase账号来付费部署合约
liyuechun: 换成你的密码。> personal.unlockAccount(account1, 'liyuechun')
true
>
11. 预估手续费
> bytecode = "6060604052341561000f57600080fd5b5b60ab8061001e6000396000f30060606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029"
"6060604052341561000f57600080fd5b5b60ab8061001e6000396000f30060606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029"
> web3.eth.estimateGas({data: bytecode})
Error: invalid argument 0: json: cannot unmarshal hex string without 0x prefix into Go struct field CallArgs.data of type hexutil.Bytes
at web3.js:3104:20
at web3.js:6191:15
at web3.js:5004:36
at :1:1
> bytecode = "0x6060604052341561000f57600080fd5b5b60ab8061001e6000396000f30060606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029"
"0x6060604052341561000f57600080fd5b5b60ab8061001e6000396000f30060606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029"
> web3.eth.estimateGas({data: bytecode})
98391
>
备注：字节码前面需要添加
0x。手续费大概为98391wei。12. 部署合约，为了方便理解，设置一个回调函数
> contractInstance = myContract.new({data: bytecode gas: 1000000, from: account1}, function(e, contract){
if(!e){
if(!contract.address){
console.log("Contract transaction send: Transaction Hash: "+contract.transactionHash+" waiting to be mined...");
}else{
console.log("Contract mined! Address: "+contract.address);
console.log(contract);
}
}else{
console.log(e)
}
})
Contract transaction send: Transaction Hash: 0x5e2aebbf400d71a32e807dc3f11f1053b6ee3b2a81435ed8ace2fa54eebb9f3d waiting to be mined...
{
abi: [{
constant: false,
inputs: [{...}],
name: "multiply",
outputs: [{...}],
payable: false,
type: "function"
}],
address: undefined,
transactionHash: "0x5e2aebbf400d71a32e807dc3f11f1053b6ee3b2a81435ed8ace2fa54eebb9f3d"
}
>
13. 你的合约等待挖矿，开始挖矿，等一会儿，停止
> miner.start()
null
> Contract mined! Address: 0xbf8b24283f2516360d3a4ba1db0df78ae74689db
[object Object]
> miner.stop()
true
>
14. 检查合约是否部署成功
> eth.getCode(contractInstance.address)
"0x60606040526000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063c6888fa114603d575b600080fd5b3415604757600080fd5b605b60048080359060200190919050506071565b6040518082815260200191505060405180910390f35b60006007820290505b9190505600a165627a7a7230582067d7c851e14e862886b6f53dad6825135557fb3a4b691350c94ea5b80605f6770029"
>
15. 调用合约方法
> contractInstance.multiply.call(6)
42
>
PS： 这里添加
call的原因是因为multiply函数没有添加constant。pragma solidity ^0.4.4;
contract test {
function multiply(uint a) returns(uint d){
return a * 7;
}
}
Over Game!!!!
