本地私有链

建立本地私有链

• 建立测试文件夹

  $ mkdir test_truffle_geth
  $ cd test_truffle_geth/
  

• 建立创世块（genesis.json即配置文件）

  sudo vim genesis.json
  

  {
    "config": {
      "chainId": 666,
      "homesteadBlock": 0,
      "eip150Block": 0,
      "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "eip155Block": 0,
      "eip158Block": 0,
      "byzantiumBlock": 0,
      "constantinopleBlock": 0,
      "petersburgBlock": 0,
      "istanbulBlock": 0,
      "ethash": {}
    },
    "nonce": "0x0",
    "timestamp": "0x5ddf8f3e",
    "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "gasLimit": "0x47b760",
    "difficulty": "0x00002",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x0000000000000000000000000000000000000000",
    "alloc": { },
    "number": "0x0",
    "gasUsed": "0x0",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
  }
  

• 初始化文件夹

  $ geth1 init ./genesis.json --datadir "./chain"
  

• 启动私有链

  geth1 --identity "mshk.top etherum" --rpcaddr 127.0.0.1 --rpc --rpcport "8545" --rpccorsdomain "*"  --maxpeers 2 --rpcapi "personal,eth,net,web3,debug" --networkid 100 --datadir "./chain" --nodiscover --allow-insecure-unlock --dev.period 1 console
  

• 创建账户开始挖矿

  # 创建帐号
  > personal.newAccount("123456")
  # 解锁
  > personal.unlockAccount(eth.accounts[0],"123456",15000)
  # 开始挖矿
  > miner.start(1)
  

测试私有链

还是拿之前测试的合约来运行

• 首先需要更改truffle-config.js文件：

  module.exports = {
    networks: {
      development: {
        host: "127.0.0.1",
        port: 8545,
        network_id: "*", // Match any network id
      }
    }
  };
  

  然后执行truffle migrate即可部署合约

  打开index.html

  

  测试通过