发布自己的代币到BSC测试链
- 错误一:
Gas estimation failed X nt Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? Returned error: ["jsonrpc"."2.0" "error" "invalid opcode: opcode 0x5f not defined" "id" 5500127351776497}
因为版本采用的0.8.21
,改为0.8.19
该编译器将默认目标 EVM 版本切换为 Shanghai,
这意味着生成的字节码将包含 PUSH0 操作码。
如果您打算部署在主网以外的链上,
例如可能尚不支持 PUSH0 的 L2 链,请务必选择适当的 EVM 版本,
否则合约部署将失败
- 错误二:
creation of Standard_Token errored: Returned error: {"jsonrpc":"2.0","error":"[ethjs-query] while formatting outputs from RPC '{\"value\":{\"code\":-32603,\"data\":{\"code\":-32000,\"message\":\"transaction underpriced\"}}}'","id":8421776024947773}
预估的gas
太低了,弹出的小狐狸点击建议的网站
,选择高级
,设置5
起步
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
interface Token {
/// @param _owner The address from which the balance will be retrieved
/// @return balance the balance
function balanceOf(address _owner) external view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return success Whether the transfer was successful or not
function transfer(address _to, uint256 _value) external returns (bool success);
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return success Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) external returns (bool success);
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return success Whether the approval was successful or not
function approve(address _spender , uint256 _value) external returns (bool success);
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return remaining Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) external view returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
contract Standard_Token is Token {
uint256 constant private MAX_UINT256 = 2**256 - 1;
mapping (address => uint256) public balances;
mapping (address => mapping (address => uint256)) public allowed;
uint256 public totalSupply;
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; //fancy name: eg Simon Bucks
uint8 public decimals; //How many decimals to show.
string public symbol; //An identifier: eg SBX
constructor() {
balances[msg.sender] = 1000 * 10**18; // Give the creator all initial tokens
totalSupply = 1000 * 10**18; // Update total supply
name = "Custom Coin"; // Set the name for display purposes
decimals = 18; // Amount of decimals for display purposes
symbol = "CCN"; // Set the symbol for display purposes
}
function transfer(address _to, uint256 _value) public override returns (bool success) {
require(balances[msg.sender] >= _value, "token balance is lower than the value requested");
balances[msg.sender] -= _value;
balances[_to] += _value;
emit Transfer(msg.sender, _to, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public override returns (bool success) {
uint256 allowanceValue = allowed[_from][msg.sender];
require(balances[_from] >= _value && allowanceValue >= _value, "token balance or allowance is lower than amount requested");
balances[_to] += _value;
balances[_from] -= _value;
if (allowanceValue < MAX_UINT256) {
allowed[_from][msg.sender] -= _value;
}
emit Transfer(_from, _to, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function balanceOf(address _owner) public override view returns (uint256 balance) {
return balances[_owner];
}
function approve(address _spender, uint256 _value) public override returns (bool success) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value); //solhint-disable-line indent, no-unused-vars
return true;
}
function allowance(address _owner, address _spender) public override view returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
网友评论