使用TronWeb执行TRC20 USDT转账失败（交易回滚）求助

尝试通过TronWeb进行TRC20标准USDT转账，已获取交易ID，但始终无法触发智能合约。实现代码如下：

const TronWeb = require('tronweb');

// Create a TRON instance
const tronWeb = new TronWeb({
  fullHost: 'https://api.trongrid.io', // Use the TRON full node URL
});

// Function to send USDT TRC20 tokens
async function sendUsdt(addressTo, amount, privateKey) {
  try {
    // Convert the amount to SUN
    const amountSun = tronWeb.toSun(amount.toString());

    // Get the contract address of USDT TRC20 token
    const usdtContractAddress = 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t'; // USDT TRC20 contract address

    // Get the address associated with the private key
    const ownerAddress = tronWeb.address.fromPrivateKey(privateKey);

    // Create the transfer transaction data
    const transferData = await tronWeb.transactionBuilder.triggerSmartContract(
      usdtContractAddress,
      'transfer',
      {
        _to: addressTo,
        _value: amountSun
      },
      [],
      ownerAddress // Set the owner_address parameter
    );
    transferData.transaction.fee = fee;

    // Sign the transaction
    const signedTransaction = await tronWeb.trx.sign(
      transferData.transaction,
      privateKey
    );

    // Broadcast the transaction
    const receipt = await tronWeb.trx.sendRawTransaction(
      signedTransaction
    );

    console.log('Transaction receipt:', receipt);
  } catch (error) {
    console.error('Failed to send USDT:', error);
  }
}

// Usage: Call the sendUsdt function with the recipient's address, amount, and private key
const recipientAddress = 'TRECIPENT';
const amount = 10; // Amount of USDT to send
const privateKey = 'MY_PRIV_KEY'; // Set your private key here
const fee = 100000; // Fee value in SUN

sendUsdt(recipientAddress, amount, privateKey,fee);

交易ID：e76d76d8898e7418cdb558573e90a3cc7b28e94da245df3990aa46f7d4fecc88

问题分析与修复方案 #

1. 函数参数不匹配 #

调用sendUsdt时传入了4个参数，但函数定义仅接收3个，导致fee变量在函数内部未定义。TronWeb会自动计算合规手续费，无需手动设置，直接删除transferData.transaction.fee = fee该行即可。

2. TRC20转账参数格式错误 #

triggerSmartContract调用transfer方法时，参数必须按照TRON ABI规范以数组形式传递，而非对象。USDT的transfer方法签名为transfer(address,uint256)，且USDT是6位小数，不能用TRX的toSun转换，需自行计算最小单位（amount * 10**6）。

3. 地址格式校验 #

确保recipientAddress是正确的Base58格式TRON地址，避免拼写错误。

修复后的完整代码 #

const TronWeb = require('tronweb');

const tronWeb = new TronWeb({
  fullHost: 'https://api.trongrid.io',
});

async function sendUsdt(addressTo, amount, privateKey) {
  try {
    // USDT最小单位转换（6位小数）
    const amountUsdtUnit = Math.round(amount * 10**6).toString();
    const usdtContractAddress = 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t';
    const ownerAddress = tronWeb.address.fromPrivateKey(privateKey);

    // 正确构造智能合约调用参数
    const transferData = await tronWeb.transactionBuilder.triggerSmartContract(
      usdtContractAddress,
      'transfer',
      {}, // 空配置项
      [
        { type: 'address', value: addressTo },
        { type: 'uint256', value: amountUsdtUnit }
      ],
      ownerAddress
    );

    // 签名并广播交易
    const signedTransaction = await tronWeb.trx.sign(transferData.transaction, privateKey);
    const receipt = await tronWeb.trx.sendRawTransaction(signedTransaction);

    console.log('Transaction receipt:', receipt);
  } catch (error) {
    console.error('Failed to send USDT:', error);
  }
}

// 调用示例（替换为实际参数）
const recipientAddress = 'TRECIPENT';
const amount = 10;
const privateKey = 'MY_PRIV_KEY';

sendUsdt(recipientAddress, amount, privateKey);

额外检查项 #

• 确认发送地址有足够TRX支付手续费（至少0.01 TRX）
• 确认发送地址USDT余额≥转账金额
• 通过交易ID查看详情时，contractResult为["0x0"]表示合约执行成功

内容的提问来源于stack exchange，提问作者erenA