运行Solidity合同导致“ENOENT:no such file or directory”错误

问题描述 投票:0回答:3

我正在练习在Solidity中编写智能合约并运行下面的代码导致没有这样的文件或目录错误。

错误:ENOENT:没有这样的文件或目录,打开'C:\ kickstart \ ethereum \ build:Campaign.json'

这是一个Kickstarter类型的合同,有多个参与者和一个经理(合同的所有者)。用户可以捐款。经理是唯一能够提取资金的人,但该类型的行动需要其他用户的许可。

 **Campaign.sol**
    pragma solidity ^0.4.20;

contract CampaignFactory {
    address[] public deployedCampaigns;


    function createCampaign(uint minimum) public {
     address newCampaign = new Campaign(minimum, msg.sender);
     deployedCampaigns.push(newCampaign);
    }

    function getDeployedCampaigns() public view returns(address []) {
        return deployedCampaigns;
    }

}
contract Campaign {
    struct Request {
        string description;
        uint value;
        address recipient;
        bool complete;
        uint approvalCount;
        mapping(address => bool) approvals;
            }

Request[] public requests;
address public manager;

uint public minimumContribution;
//address[] public approvers; mapping has a constant time lookup
mapping(address => bool) public approvers;
uint public approversCount;

modifier restricted() {
    require(msg.sender == manager);
    _;
}

constructor (uint minimum, address creator) public {
    manager = creator;
    minimumContribution = minimum;
}

function contribute() public payable {
    require(msg.value > minimumContribution);

  approvers[msg.sender] = true;  
  approversCount++;

}

function createRequest(string description, uint value, address recipient) public restricted {
    Request memory newRequest = Request({
        description: description,
        value:value,
        recipient: recipient,
        complete: false,
        approvalCount:0
    });

    requests.push(newRequest);
     }

     function approveRequest(uint index) public {
         Request storage request = requests[index];

         require (approvers [msg.sender]);
         require(!request.approvals[msg.sender]);

         request.approvals[msg.sender] = true;
         request.approvalCount++;



     }

     function finalizeRequest(uint index) public restricted {
     Request storage request = requests[index];

     require(!request.complete);
     request.complete = true;

     }
 }

**compile.js**
const path = require("path");
const solc = require("solc");
//file system on local compuiter
const fs = require("fs-extra");

const buildPath = path.resolve(__dirname, "build");
// file removal in fs-extra version
fs.removeSync(buildPath);
//path to the file
const campaignPath = path.resolve(__dirname, "contracts", "Campaign.sol");
//get a content of file
const source = fs.readFileSync(campaignPath, "utf8");
// output from the compiler
const output = solc.compile(source, 1).contracts;

for (let contract in output) {
  fs.outputJsonSync(
    path.resolve(buildPath, contract + ".json"),
    output[contract]
  );
}
solidity smartcontracts enoent
3个回答
0
投票

回答你的问题:Campain.json位于build文件夹中,包含Campaign合约所有实例的输出。

我能够通过执行以下步骤来修复错误:

  • 完全删除项目中的node_modules文件夹
  • 运行npm cache clean --force命令
  • 运行npm安装

请找到以下项目的链接:https://github.com/StephenGrider/EthereumCasts


0
投票

如果要确保正确配置了compile.js文件,请添加“console.log(solc.compile(source,1));”在for循环之前检查输出。

关于这个问题,您可以使用path.resolve(build Path,contract.replace(':','')+'。json')替换:path.resolve(build Path,contract +'。json'),

希望这可以帮助 !


0
投票

我遇到了同样的问题。问题是Windows不满意文件名中包含特殊字符,在这种情况下是冒号“:”字符。

因此,在输出结果时删除冒号,如下所示:

for (let contract in output) {
  fs.outputJSONSync(
    path.resolve(buildPath, contract.replace(':', '') + ".json"),
    output[contract]
  );
}
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