智能合約部署失敗 PowerShell

這裡是初學者的智能合約開發人員。這是我的智能合約：

pragma solidity ^0.5.16;
contract Ballot {

   struct Voter {
       uint weight;
       bool voted;
       uint8 vote;
      // address delegate;
   }
   struct Proposal {
       uint voteCount; // could add other data about proposal
   }

   address chairperson;
   mapping(address => Voter) voters;
   Proposal[] proposals;


   /// Create a new ballot with $(_numProposals) different proposals.
   constructor(uint8 _numProposals) public {
       chairperson = msg.sender;
       voters[chairperson].weight = 2;
       proposals.length = _numProposals; 
   }

   /// Give $(toVoter) the right to vote on this ballot.
   /// May only be called by $(chairperson).
   function register(address toVoter) public {
       if (msg.sender != chairperson || voters[toVoter].voted) return;
       voters[toVoter].weight = 1;
       voters[toVoter].voted = false;
   }

   /// Give a single vote to proposal $(toProposal).
   function vote(uint8 toProposal) public {
       Voter storage sender = voters[msg.sender];
       if (sender.voted || toProposal >= proposals.length) return;
       sender.voted = true;
       sender.vote = toProposal;
       proposals[toProposal].voteCount += sender.weight;
   }

   function winningProposal() public view returns (uint8 _winningProposal,uint wvc) {
       uint256 winningVoteCount = 0;
       for (uint8 prop = 0; prop < proposals.length; prop++)
           if (proposals[prop].voteCount > winningVoteCount) {
               winningVoteCount = proposals[prop].voteCount;
               _winningProposal = prop;
               wvc=winningVoteCount;
           }
   }     
}

在使用 Truffle compile 進行編譯時，我沒有收到任何錯誤，如下所示：

Compiling your contracts...
===========================

   > Compiling .\contracts\Ballot.sol
   > Compiling .\contracts\Migrations.sol
   > Artifacts written to C:\Users\Aaryamann\Desktop\simpleAddress\build\contracts
   > Compiled successfully using:
      - solc: 0.5.16+commit.9c3226ce.Emscripten.clang

但是，當我使用truffle migrate --reset這種情況時：

Compiling your contracts...
===========================

   > Compiling .\contracts\Ballot.sol
   > Compiling .\contracts\Migrations.sol
   > Artifacts written to C:\Users\Aaryamann\Desktop\simpleAddress\build\contracts
   > Compiled successfully using:
      - solc: 0.5.16+commit.9c3226ce.Emscripten.clang



Starting migrations...
======================

   > Network name:    'development'
   > Network id:      5777
   > Block gas limit: 0x6691b7


1_initial_migration.js
======================

      Replacing 'Migrations'
      ----------------------
      > transaction hash:    0xee307d9e6aa87830ba37b60d5e5a5fc0de67ed6f307f23a86bf9fea715b4ecc0
      > Blocks: 0            Seconds: 0
      > contract address:    0xFd69eD8A7425792183a50B2433E5260efC68ad16
      > block number:        1
      > block timestamp:     1586275003
      > account:             0xe266322C7F15539244BCcF0Ac2e8C0918fc9d5D7
      > balance:             99.9967165
      > gas used:            164175
      > gas price:           20 gwei
      > value sent:          0 ETH
      > total cost:          0.0032835 ETH


      > Saving migration to chain.
      > Saving artifacts
      -------------------------------------
      > Total cost:           0.0032835 ETH


2_deploy_contracts.js
=====================



    Deploying 'Ballot'
      ------------------

   Error:  *** Deployment Failed ***

   "Ballot" -- Invalid number of parameters for "undefined". Got 0 expected 1!.

       at C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\deployer\src\deployment.js:364:1
       at processTicksAndRejections (internal/process/task_queues.js:97:5)
       at Migration._deploy (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\migration.js:70:1)
       at Migration._load (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\migration.js:57:1)
       at Migration.run (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\migration.js:167:1)
       at Object.runMigrations (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\index.js:148:1)
       at Object.runFrom (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\index.js:110:1)
       at Object.runAll (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\index.js:114:1)
       at Object.run (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\migrate\index.js:79:1)
       at runMigrations (C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\core\lib\commands\migrate.js:253:1)
       at C:\Users\Aaryamann\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\core\lib\commands\migrate.js:218:1
   Truffle v5.1.20 (core: 5.1.20)
   Node v13.12.0

它在 PowerShell 上執行。

程式碼本身很好，因此編譯成功。但是，當您嘗試在2_deploy_contracts.js中部署合約時，會出現錯誤。

您的合約需要一個建構子參數uint8 _numProposals，您需要在2_deploy_contracts.js中提供該參數。所以不是像deployer.deploy(A)你需要的東西，比如論點deployer.deploy(A, 8)在哪裡。8

您可以在此處閱讀有關 Truffle 的建構子參數語法的更多資訊：https ://www.trufflesuite.com/docs/truffle/getting-started/running-migrations#deployer-deploy-contract-args-options-

引用自：https://ethereum.stackexchange.com/questions/82249