如何使用@solana-labs/web3.js发送USDC-SPL

npm init -y

npm install @solana/web3.js

const { Connection, Keypair, PublicKey, Transaction, sendAndConfirmTransaction } = require('@solana/web3.js');

// 连接到Solana网络
const connection = new Connection('https://api.mainnet-beta.solana.com');

// 定义发送者的私钥和接收方的地址
const senderPrivateKey = Uint8Array.from([YOUR_SENDER_PRIVATE_KEY]);
const receiverAddress = new PublicKey('YOUR_RECEIVER_ADDRESS');

// 定义USDC-SPL的合约地址和发送数量
const usdcMintAddress = new PublicKey('USDC_SPL_CONTRACT_ADDRESS');
const sendAmount = 1000000000; // 1 USDC-SPL

(async () => {
  // 创建发送者的Keypair
  const senderKeypair = Keypair.fromSecretKey(senderPrivateKey);

  // 获取发送者的余额和最新的区块
  const senderBalance = await connection.getBalance(senderKeypair.publicKey);
  const recentBlockhash = (await connection.getRecentBlockhash()).blockhash;

  // 创建交易
  const transaction = new Transaction()
    .add(
      // 添加USDC-SPL的转账指令
      Token.createTransferInstruction(
        TOKEN_PROGRAM_ID,
        usdcMintAddress,
        receiverAddress,
        senderKeypair.publicKey,
        [],
        sendAmount
      )
    )
    .setSigners(senderKeypair.publicKey);

  // 签名和发送交易
  const { blockhash } = await connection.getRecentBlockhash();
  transaction.recentBlockhash = blockhash;
  transaction.feePayer = senderKeypair.publicKey;
  const signedTransaction = await window.solana.signTransaction(transaction);
  const signature = await connection.sendRawTransaction(signedTransaction.serialize());

  // 等待交易确认
  await connection.confirmTransaction(signature);

  console.log('交易已发送:', signature);
})();

node send-usdc.js