如何使用ethers.js的JsonRpcProvider广播已签名交易？

请问有什么方法可以将已签名的交易（TX）广播至区块链网络？我在JsonRpcProvider实例中未找到任何含send的方法。以下是我的代码片段：

export async function signAndBroadcast(address, rawTransaction, jrpcUrl, key) {
    const provider = new ethers.JsonRpcProvider(jrpcUrl)
    expect( await checkBalance(address, provider)).toBe(true)
    // Initialize a new Wallet instance
    const wallet = new ethers.Wallet(key, provider);
    // Parse the raw transaction
    const tx = ethers.Transaction.from(rawTransaction);
    tx.nonce = await provider.getTransactionCount(wallet.address)
    const { name, chainId } = await provider.getNetwork()
    tx.chainId = chainId
    tx.value = ethers.parseUnits('32', 'ether')
    tx.gasLimit = 1000000
    tx.gasPrice = undefined
    tx.type = 2
    // Sign the transaction
    const signedTransaction = await wallet.signTransaction(tx);
    console.log("TX signed: " + signedTransaction)
    // Send the signed transaction
    const transactionResponse = await provider.sendTransaction(signedTransaction) // no function sendTransaction

    transactionResponse
        .then((transactionResponse) => {
            console.log('Transaction broadcasted, transaction hash:', transactionResponse.hash);
        })
        .catch((error) => {
            console.error('Error:', error);
        }).finally(() => {
            console.log('Finished')
        });
}

解决方案 #

问题出在调用的方法名上，JsonRpcProvider并没有sendTransaction方法，广播已签名交易需要使用**broadcastTransaction**方法。

以下是修正后的TypeScript代码：

console.log("Sign TX")
// Initialize a new Wallet instance
const wallet = new ethers.Wallet(pk, provider);
// Parse the raw transaction
const tx = ethers.Transaction.from(serializeTx);    
tx.nonce = await provider.getTransactionCount(wallet.address)
const { name, chainId } = await provider.getNetwork()
tx.chainId = chainId
tx.value = ethers.parseUnits('32', 'ether')
tx.gasLimit = 1000000
tx.gasPrice = undefined
tx.type = 2
// Sign the transaction
const signedTransaction = await wallet.signTransaction(tx);
console.log(" >>> TX signed: " + signedTransaction);
expect(signedTransaction).not.toBe("");

console.log("Broadcast TX");
const transactionResponse = await provider.broadcastTransaction(signedTransaction);
const txHash = transactionResponse.hash
console.log("TxHash => ", txHash);

内容的提问来源于stack exchange，提问作者27P