如何通过“@solana/web3.js”和“@solana/sol-钱包-适配器”传输自定义SPL令牌
如何通过“@solana/web3.js”和“@solana/sol-钱包-适配器”传输自定义SPL令牌
提问于 2021-12-04 08:41:35
我试图转移一个自定义SPL令牌与solana-钱包适配器。然而，我很难拿到钱包的密匙/签下交易。
我已经查看了编写传输代码的这些答案，但是我需要让签名者和我很难弄清楚solana钱包适配器是如何使用的：
这些例子硬编码秘密密钥，因为我使用钱包扩展，这是不可能的。
根据https://github.com/solana-labs/wallet-adapter/issues/120上的这个问题，您需要：
- 创建@solana/web3.js事务对象并向其添加说明
- 用钱包签交易
- 通过连接发送事务
但是我很难找到关于如何做第一步和第二步的例子或文档。
const SendTransaction: React.FC<Props> = ({ children }) => {
const { connection } = useConnection()
const { publicKey, sendTransaction } = useWallet()
const onSendSPLTransaction = useCallback(
async (toPubkey: string, amount: number) => {
if (!toPubkey || !amount) return
const toastId = toast.loading('Processing transaction...')
try {
if (!publicKey) throw new WalletNotConnectedError()
const toPublicKey = new PublicKey(toPubkey)
const mint = new PublicKey('Mint address')
const payer = '????' // how to get this Signer
const token = new Token(connection, mint, TOKEN_PROGRAM_ID, payer)
const fromTokenAccount = await token.getOrCreateAssociatedAccountInfo(publicKey)
const toTokenAccount = await token.getOrCreateAssociatedAccountInfo(toPublicKey)
const transaction = new Transaction().add(
Token.createTransferInstruction(
TOKEN_PROGRAM_ID,
fromTokenAccount.address,
toTokenAccount.address,
publicKey,
[],
0
)
)
const signature = await sendTransaction(transaction, connection)
const response = await connection.confirmTransaction(signature, 'processed')
console.log('response', response)
toast.success('Transaction sent', {
id: toastId,
})
} catch (error) {
toast.error(`Transaction failed: ${error.message}`, {
id: toastId,
})
}
},
[publicKey, sendTransaction, connection]
)
return <>{children(onSendSPLTransaction)}</>
}Stack Overflow用户
发布于 2022-10-04 04:29:36
以上回答有两个问题。
- 首先，当我们可以使用内置的函数“@solana/钱包-适配器”、“@solana/spl-token”和“@solana/web3.js”时，我们需要编写大量的自定义代码。
- 第二，如果接收者帐户不存在，用户将被任何连接的钱包收取两次费用。第一次将收取创建帐户的费用，第二次将收取转移spl令牌的费用。此外，它还打开钱包审批模式两次，这将再次对用户不利。
下面的代码传输1 USDC(USDC是solana块链上的spl令牌之一)。
import React from 'react';
import {
WalletNotConnectedError,
SignerWalletAdapterProps
} from '@solana/wallet-adapter-base';
import { useConnection, useWallet } from '@solana/wallet-adapter-react';
import {
createTransferInstruction,
createAssociatedTokenAccountInstruction,
getAssociatedTokenAddress,
getAccount
} from '@solana/spl-token';
import {
PublicKey,
Transaction,
Connection,
TransactionInstruction
} from '@solana/web3.js';
export const configureAndSendCurrentTransaction = async (
transaction: Transaction,
connection: Connection,
feePayer: PublicKey,
signTransaction: SignerWalletAdapterProps['signTransaction']
) => {
const blockHash = await connection.getLatestBlockhash();
transaction.feePayer = feePayer;
transaction.recentBlockhash = blockHash.blockhash;
const signed = await signTransaction(transaction);
const signature = await connection.sendRawTransaction(signed.serialize());
await connection.confirmTransaction({
blockhash: blockHash.blockhash,
lastValidBlockHeight: blockHash.lastValidBlockHeight,
signature
});
return signature;
};
const SendSolanaSplTokens: React.FC = () => {
const { connection } = useConnection();
const { publicKey, signTransaction } = useWallet();
const handlePayment = async () => {
try {
if (!publicKey || !signTransaction) {
throw new WalletNotConnectedError();
}
const mintToken = new PublicKey(
'4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU'
); // 4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU is USDC token address on solana devnet
const recipientAddress = new PublicKey(
'token receiver solana account address'
);
const transactionInstructions: TransactionInstruction[] = [];
const associatedTokenFrom = await getAssociatedTokenAddress(
mintToken,
publicKey
);
const fromAccount = await getAccount(connection, associatedTokenFrom);
const associatedTokenTo = await getAssociatedTokenAddress(
mintToken,
recipientAddress
);
if (!(await connection.getAccountInfo(associatedTokenTo))) {
transactionInstructions.push(
createAssociatedTokenAccountInstruction(
publicKey,
associatedTokenTo,
recipientAddress,
mintToken
)
);
}
transactionInstructions.push(
createTransferInstruction(
fromAccount.address, // source
associatedTokenTo, // dest
publicKey,
1000000 // transfer 1 USDC, USDC on solana devnet has 6 decimal
)
);
const transaction = new Transaction().add(...transactionInstructions);
const signature = await configureAndSendCurrentTransaction(
transaction,
connection,
publicKey,
signTransaction
);
// signature is transaction address, you can confirm your transaction on 'https://explorer.solana.com/?cluster=devnet'
} catch (error) {}
};
return <button onClick={handlePayment}>Transfer spl token</button>;
};
export default SendSolanaSplTokens;页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/70224185
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