（Windows）Geth命令行操作智能合约笔记

准备工作：

1.编译器 solc

2.Geth

3.区块数据存储位置变更（windows ，非必要）

4.合约（诸如： A 、B ）

备注：

solc 我是用的本地node.js 安装的solcjs 。网络版的时常大姨妈。

对应的编译命令：

solcjs --bin question.sol // 二进制

solcjs --abi question.sol // abi

---

Geth 需要在系统环境变量中

开始干活：

1.打开任意位置命令行

2. 配置私链可参考翻译

geth init init.json

{
	"nonce": "0x0000000000000042",
	"mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
	"difficulty": "0x20000",
	"alloc": {},
	"coinbase": "0x0000000000000000000000000000000000000000",
	"timestamp": "0x00",
	"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
	"extraData": "blossom",
	"gasLimit": "0xffffffff"
}

-- 并将日志打入指定文件 -- 2这里可能代表模式表示后台运行日志？

geth console 2>> D:/EthereumData/Ethereum/devnet/logs/geth.log --dev --rpc

这时候就进入geth的console了

3.合约这里用的是上面的 A （我把 question 属性类型改成 bytes了之前的是String）

pragma solidity ^0.4.0;
contract Questions {

  //global variables that aren't in a struct
  mapping(address => uint) public answers; //integer where 0 means hasn't answered, 1 means yes, 2 means no
  bytes question;
  address asker;
  uint trues;
  uint falses;

  /// __init__
  function questions(bytes _question) public {
    asker = msg.sender;
question = _question;
  }

  //We need a way to validate whether or not they've answered before.
  //The default of a mapping is 
  function answerQuestion (bool _answer) public {
    if (answers[msg.sender] == 0 && _answer) { //haven't answered yet
      answers[msg.sender] = 1; //they vote true
      trues += 1;
}
    else if (answers[msg.sender] == 0 && !_answer) {
      answers[msg.sender] = 2; //falsity
      falses += 1;
    }
    else if (answers[msg.sender] == 2 && _answer) { // false switching to true
      answers[msg.sender] = 1; //true
      trues += 1;
      falses -= 1;
        }
    else if (answers[msg.sender] == 1 && !_answer) { // true switching to false
      answers[msg.sender] = 2; //falsity
      trues -= 1;
      falses += 1;
    }
  }

  function getQuestion() public constant returns (bytes, uint, uint, uint) {
    return (question, trues, falses, answers[msg.sender]);
      }
}

对应的abi 为：

[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"answers","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_question","type":"bytes"}],"name":"questions","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getQuestion","outputs":[{"name":"","type":"bytes"},{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_answer","type":"bool"}],"name":"answerQuestion","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

对应的bin为

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

4.定义合约

abi=[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"answers","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_question","type":"bytes"}],"name":"questions","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getQuestion","outputs":[{"name":"","type":"bytes"},{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_answer","type":"bool"}],"name":"answerQuestion","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

contractQ=eth.contract(abi)

5.解锁账户

personal.unlockAccount(eth.coinbase)

默认私链的coinbase 是有点钱的，默认密码为空直接回车就行了

6.创建并发起合约

transQ=contractQ.new({from:eth.coinbase,data:'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',gas:'4700000'})

data内容就是合约的二进制bin

这时候日志里会有条记录

这时候等待矿工挖矿就行了

7.查询合约发布情况

transReceipt=eth.getTransactionReceipt(transQ.transactionHash)

status 0x1 表示成功 0x0 表示失败 contractAddress就是合约地址

8.通过合约地址获取合约对象

entityQ = contractQ.at(transReceipt.contractAddress)

9.调用合约的查询方法getQuestion()

entityQ.getQuestion()

第一次调用question属性应该为空字节0x 其他都是0

10.通过交易transaction调用合约方法questions

txSend=eth.sendTransaction({"from": eth.coinbase, "to": transReceipt.contractAddress, "data": "0xa869765a00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000014697320636f6e747261637420737563636573733f000000000000000000000000"})

这里说明下简单说下data数据的组成，比较复杂。。0x后面开始

前4个字节--即前8位为方法+参数类型的sha3值 questions(bytes)的前八位

后面参数根据参数类型是否是动态或者静态做不同处理。动态的先搞个占位符，然后填具体内容。静态的直接填写就行了详见文档

note:

这东西自己搞比较累，不如直接调用方法将结果返回出来。。

获取到合约对象，选择对应的方法questions,调用getData,填写参数会直接生成需要的data 二进制参数

entityQ.questions.getData("is contract success?")

11.查询交易情况

eth.getTransaction(txSend)

12.查询合约的getQuestion()检查是否变化

entityQ.getQuestion()

这里question属性已经变了，内容就是"is contract success?"的16进制内容。

这表示合约已经调用成功。。

参考文献：

end

（Windows）Geth命令行操作智能合约笔记

猜你喜欢