区块链技术 之 以太坊(ethereum)开发环境安装

先访问github上go语言开发客户端网址：

https://github.com/ethereum/go-ethereum

安装ethereum

https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum

在MAC上安装

brew tap ethereum/ethereum

brew install ethereum

dogiant@bogon : /usr/local $brew tap ethereum/ethereum
Updating Homebrew...
==> Tapping ethereum/ethereum
Cloning into '/usr/local/Homebrew/Library/Taps/ethereum/homebrew-ethereum'...
remote: Counting objects: 6, done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 6 (delta 1), reused 1 (delta 0), pack-reused 0
Unpacking objects: 100% (6/6), done.
Checking connectivity... done.
Tapped 3 formulae (31 files, 33.9K)
dogiant@bogon : /usr/local $brew install ethereum
==> Installing ethereum from ethereum/ethereum
==> Installing dependencies for ethereum/ethereum/ethereum: go
==> Installing ethereum/ethereum/ethereum dependency: go
==> Downloading https://homebrew.bintray.com/bottles/go-1.7.4_1.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==> Pouring go-1.7.4_1.el_capitan.bottle.tar.gz
==> Caveats
As of go 1.2, a valid GOPATH is required to use the `go get` command:
  https://golang.org/doc/code.html#GOPATH

You may wish to add the GOROOT-based install location to your PATH:
  export PATH=$PATH:/usr/local/opt/go/libexec/bin
==> Summary
�  /usr/local/Cellar/go/1.7.4_1: 6,438 files, 250.7M
==> Installing ethereum/ethereum/ethereum
==> Cloning https://github.com/ethereum/go-ethereum.git
Cloning into '/Users/dogiant/Library/Caches/Homebrew/ethereum--git'...
remote: Counting objects: 2737, done.
remote: Compressing objects: 100% (2066/2066), done.
remote: Total 2737 (delta 963), reused 1654 (delta 553), pack-reused 0
Receiving objects: 100% (2737/2737), 14.91 MiB | 112.00 KiB/s, done.
Resolving deltas: 100% (963/963), done.
Checking connectivity... done.
Note: checking out 'ff07d54843ea7ed9997c420d216b4c007f9c80c3'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b

Checking out files: 100% (2487/2487), done.
==> Checking out tag v1.5.5
==> go env
==> make all
==> Caveats
To have launchd start ethereum/ethereum/ethereum now and restart at login:
  brew services start ethereum/ethereum/ethereum
==> Summary
�  /usr/local/Cellar/ethereum/1.5.5: 9 files, 47.7M, built in 5 minutes 30 seconds

安装完毕后

geth -h

列出当前的用户

geth account list 

显示空

dogiant@bogon : ~/ethereum/workspace $geth --datadir "~/ethdev" --dev
I1228 15:16:46.907316 cmd/utils/flags.go:615] WARNING: No etherbase set and no accounts found as default
I1228 15:16:46.907493 ethdb/database.go:83] Allotted 128MB cache and 1024 file handles to /Users/dogiant/ethdev/geth/chaindata
I1228 15:16:46.911765 ethdb/database.go:176] closed db:/Users/dogiant/ethdev/geth/chaindata
I1228 15:16:46.912892 node/node.go:176] instance: Geth/v1.5.5-stable-ff07d548/darwin/go1.7.4
I1228 15:16:46.912925 ethdb/database.go:83] Allotted 128MB cache and 1024 file handles to /Users/dogiant/ethdev/geth/chaindata
I1228 15:16:46.935109 eth/backend.go:280] Successfully wrote custom genesis block: e5be92145a301820111f91866566e3e99ee344d155569e4556a39bc71238f3bc
I1228 15:16:46.935127 eth/backend.go:299] ethash used in test mode
I1228 15:16:46.935536 eth/db_upgrade.go:346] upgrading db log bloom bins
I1228 15:16:46.935580 eth/db_upgrade.go:354] upgrade completed in 48.143µs
I1228 15:16:46.935601 eth/backend.go:191] Protocol Versions: [63 62], Network Id: 1
I1228 15:16:46.935744 eth/backend.go:219] Chain config: {ChainID: 1 Homestead: 1150000 DAO: 1920000 DAOSupport: true EIP150: 2463000 EIP155: 2675000 EIP158: 2675000}
I1228 15:16:46.935983 core/blockchain.go:219] Last header: #0 [e5be9214…] TD=131072
I1228 15:16:46.935998 core/blockchain.go:220] Last block: #0 [e5be9214…] TD=131072
I1228 15:16:46.936007 core/blockchain.go:221] Fast block: #0 [e5be9214…] TD=131072
I1228 15:16:46.936626 p2p/server.go:342] Starting Server
I1228 15:16:49.127910 p2p/discover/udp.go:227] Listening, enode://05399f51a43805c17f82e5016d5969d14b3092018cae87eec77ed52291d66c50c7d7bf024d953b0afcccd44c717f17aaf251b897d770054205ea268b49a3050b@10.0.37.126:58049
I1228 15:16:49.128111 whisper/whisperv2/whisper.go:176] Whisper started
I1228 15:16:49.128115 p2p/server.go:610] Listening on [::]:55739
I1228 15:16:49.129641 node/node.go:341] IPC endpoint opened: /Users/dogiant/ethdev/geth.ipc

dogiant@dubiaoqideMBP : ~ $geth --dev console 2>> file_to_log_output
Welcome to the Geth JavaScript console!

instance: Geth/v1.5.5-stable-ff07d548/darwin/go1.7.4
 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

> eth.accounts
[]
> personal.newAccount('123456')
"0x556d64ecb09b5df590a2ab842b53a8041e3961b4"
> eth.accounts
[ "0x556d64ecb09b5df590a2ab842b53a8041e3961b4" ]
> eth.accounts
[ "0x556d64ecb09b5df590a2ab842b53a8041e3961b4" ]
> personal.newAccount('123456')
"0xb0945a303834ff763695e21ed8acbe80aefee9bb"
> eth.accounts
[ "0x556d64ecb09b5df590a2ab842b53a8041e3961b4" , "0xb0945a303834ff763695e21ed8acbe80aefee9bb" ]
>

dogiant@dubiaoqideMBP : ~ $geth --dev account list
Account #0: {556d64ecb09b5df590a2ab842b53a8041e3961b4} /var/folders/jy/q2f6pdjn6p11ytfx0xk8yp7m0000gn/T/ethereum_dev_mode/keystore/UTC--2016-12-28T07-20-52.337017793Z--556d64ecb09b5df590a2ab842b53a8041e3961b4
Account #1: {b0945a303834ff763695e21ed8acbe80aefee9bb} /var/folders/jy/q2f6pdjn6p11ytfx0xk8yp7m0000gn/T/ethereum_dev_mode/keystore/UTC--2016-12-28T07-25-51.683157537Z—b0945a303834ff763695e21ed8acbe80aefee9bb

---

> user1 = eth.accounts[0]
"0x556d64ecb09b5df590a2ab842b53a8041e3961b4"
> user2 = eth.accounts[1]
"0xb0945a303834ff763695e21ed8acbe80aefee9bb"
> user1
"0x556d64ecb09b5df590a2ab842b53a8041e3961b4"
> user2
"0xb0945a303834ff763695e21ed8acbe80aefee9bb"
> eth.getBalance(user1)
0
> eth.getBalance(user2)
0
> eth.blockNumber
0
> miner.start()
true
> eth.getBalance(user1)
390000000000000000000

> eth.getBalance(user2)
0
> miner.stop()
true
> eth.blockNumber
99
> eth.getBalance(user1)
495000000000000000000
> eth.getBalance(user2)
0
> eth.sendTransaction({from:user1,to:user2,value:web3.toWei(3,"ether")})
Error: account is locked
    at web3.js:3119:20
    at web3.js:6023:15
    at web3.js:4995:36
    at :1:1

> personal.unlockAccount("0x556d64ecb09b5df590a2ab842b53a8041e3961b4","123456")

true
> eth.sendTransaction({from:user1,to:user2,value:web3.toWei(3,"ether")})
"0x39d604a1df899f6c80ce33279abe88aec28b6d97f83e2dda5f062dd3c099fcf3"
> eth.getBalance(user2)
0
> miner.start()
true
> miner.stop()
true
> eth.getBalance(user2)
3000000000000000000
> 

问题1：一开始用get account list总是看不到新建的用户，后来考虑是开发控制台创建的用户要跟开发一致 加了 —dev后看到正常显示账号

看日志以太币转账，转账后需要挖矿确认