交易哈希 : 0x97d713742eeb6479ae48ac8376aeb4d5397566a469153f8842698778036dd322

代码

const data = {
  WBNB: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c', //wbnb 
  to_PURCHASE: '0xe9e7cea3dedca5984780bafc599bd69add087d56',  // 代币合约地址
  factory: '0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73',  //PancakeSwap V2 factory
  router: '0x10ED43C718714eb63d5aA57B78B54704E256024E', //PancakeSwap V2 router
  recipient: '0xCFFFd9fa1B34B82C9883C854bb6A8f7C72Bcd8Dc', // 钱包地址
  AMOUNT_OF_WBNB: '0.0002',
  Slippage: '49', //in Percentage
  gasPrice: '5', //in gwei
  gasLimit: '3401676' //at least 21000
}

const bscMainnetUrl = 'https://bsc-dataseed.binance.org/'; //ankr or quiknode 
const privatekey = '私钥'; //without 0
const provider = new ethers.providers.JsonRpcProvider(bscMainnetUrl)
const wallet = new ethers.Wallet(privatekey);
const account = wallet.connect(provider);

const factory = new ethers.Contract(
  data.factory,
  ['function getPair(address tokenA, address tokenB) external view returns (address pair)'],
  account
);

const router = new ethers.Contract(
  data.router,
  [
    'function getAmountsOut(uint amountIn, address[] memory path) public view returns (uint[] memory amounts)',
    'function swapExactTokensForTokens(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts)'
  ],
  account
);

send()

async function  send() {
  const tokenIn = data.WBNB;
  const tokenOut = data.to_PURCHASE;

  const pairAddress = await factory.getPair(tokenIn, tokenOut);

  console.log(pairAddress);

  // 交易对 ERC20
  const pair = new ethers.Contract(pairAddress, ['event Mint(address indexed sender, uint amount0, uint amount1)', 'event Transfer(address indexed from, address indexed to, uint256 value)', 'event Approval(address indexed owner, address indexed spender, uint256 value)', 'event transactionHash(address owner)'], account);
  //We buy x amount of the new token for our wbnb
  const amountIn = ethers.utils.parseUnits(`${data.AMOUNT_OF_WBNB}`, 'ether');
  const amounts = await router.getAmountsOut(amountIn, [tokenIn, tokenOut]);

  //Our execution price will be a bit different, we need some flexbility
  const amountOutMin = amounts[1].sub(amounts[1].div(`${data.Slippage}`));
    const tx = await router.swapExactTokensForTokens(
      amountIn,
      amountOutMin,
      [tokenIn, tokenOut],
      data.recipient,
      Date.now() + 1000 * 60 * 10, //10 minutes
      {
        'gasLimit': data.gasLimit,
        'gasPrice': ethers.utils.parseUnits(`${data.gasPrice}`, 'gwei')
      });

    tx.wait().then((receipt) => {
      console.log('Transaction receipt');      console.log(receipt);
    }).catch((error) => {
      console.log("error", error)
    })

}

发现value一直是0