五、将智能合约部署到 Geth 1.7.2 私有链

操作脚本

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mkdir three
cd three
vi genesis.json

genesis.json的内容如下：

{
  "config": {
        "chainId": 10, 
        "homesteadBlock": 0,
        "eip155Block": 0,
        "eip158Block": 0
    },  
  "coinbase"   : "0x0000000000000000000000000000000000000000",
  "difficulty" : "0x20000",
  "extraData"  : "", 
  "gasLimit"   : "0x8000000",
  "nonce"      : "0x0000000000000042",
  "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
  "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
  "timestamp"  : "0x00",
  "alloc": {}
}

创建区块链

1	geth init ./genesis.json --datadir "./chain"

连接区块链，创建远程连接

geth \
  --identity "yudao.me etherum" \
  --rpcaddr 0.0.0.0 \
  --rpc \
  --rpcport 8545 \
  --maxpeers 2 \
  --rpcapi "db,eth,net,web3,debug" \
  --networkid 100 \
  --datadir "./chain" \
  --nodiscover

另起终端

geth attach ipc://home/guoqiang/blockchain/three/chain/geth.ipc
web3.personal.newAccount("123456")
personal.unlockAccount(eth.accounts[0], "123456", 15000)
miner.start(1)
acc0 = web3.eth.accounts[0]
web3.eth.getBalance(acc0)

通过https://www.bejson.com,压缩转义，将../two/build/contracts目录下的Hello_yudao_me.json中abi部分进行压缩后，如下代码

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yudao_abi=JSON.parse('[{\"constant\":true,\"inputs\":[{\"name\":\"name\",\"type\":\"string\"}],\"name\":\"print\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"say\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"}]')
yudao_bytecode="0x6060604052341561000f57600080fd5b6102488061001e6000396000f30060606040526004361061004c576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806311114af114610051578063954ab4b214610127575b600080fd5b341561005c57600080fd5b6100ac600480803590602001908201803590602001908080601f016020809104026020016040519081016040528093929190818152602001838380828437820191505050505050919050506101b5565b6040518080602001828103825283818151815260200191508051906020019080838360005b838110156100ec5780820151818401526020810190506100d1565b50505050905090810190601f1680156101195780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b341561013257600080fd5b61013a6101c5565b6040518080602001828103825283818151815260200191508051906020019080838360005b8381101561017a57808201518184015260208101905061015f565b50505050905090810190601f1680156101a75780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b6101bd610208565b819050919050565b6101cd610208565b6040805190810160405280600e81526020017f48656c6c6f206d73686b2e746f70000000000000000000000000000000000000815250905090565b6020604051908101604052806000815250905600a165627a7a7230582020589f9fd38871fc4097c360c32d1ec234f8f0c8b865bdc68937053b842dffd30029"
web3.eth.estimateGas({data: yudao_bytecode})

另终端部署合约，记得解锁账号

1	cd two, truffle migrate --reset

返回之前终端

yudao_Contract = web3.eth.contract(yudao_abi);
yudao_hello = yudao_Contract.new({from:acc0, data:yudao_bytecode, gas:300000}, function(e, contract){
    if(!e) {

      if(!contract.address) {
        console.log("Contract transaction send: TransactionHash: " + contract.transactionHash + " waiting to be mined...");

      } else {
        console.log("Contract mined! Address: " + contract.address);
        console.log(contract);
      }

    }
});
yudao_hello.say()
yudao_hello.print("Hello https://yudao.me")