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交易项

这里演示如何通过 UKey Wallet Conflux Provider 发起交易、估算 Gas、只读调用合约，并配合 js-conflux-sdk 完成更复杂的链上交互。

发交易​

const txHash = await provider.request({
  method: "cfx_sendTransaction",
  requestParams: [
    {
      from: senderAddress,
      to: recipientAddress,
      value: "0x2386f26fc10000", // 示例 CFX 金额
      gas: "0x5208", // 数值参考片段：21000
    },
  ],
});

console.log("交易哈希:", txHash);

估算 Gas 后发送​

// 第一步先估算 gas
const gasEstimate = await provider.request({
  method: "cfx_estimateGasAndCollateral",
  requestParams: [
    {
      from: senderAddress,
      to: recipientAddress,
      value: "0x2386f26fc10000",
    },
  ],
});

// 按估算值发起发送
const txHash = await provider.request({
  method: "cfx_sendTransaction",
  requestParams: [
    {
      from: senderAddress,
      to: recipientAddress,
      value: "0x2386f26fc10000",
      gas: gasEstimate.gasLimit,
      storageLimit: gasEstimate.storageCollateralized,
    },
  ],
});

调用合约​

const callResult = await provider.request({
  method: "cfx_call",
  requestParams: [
    {
      to: contractAddress,
      data: encodedFunctionCall,
    },
    "latest_state",
  ],
});

console.log("调用结果:", callResult);

与 js-conflux-sdk 配合使用​

部署​

npm install js-conflux-sdk

连接 Provider​

import { Conflux } from "js-conflux-sdk";

const conflux = new Conflux({
  url: "https://main.confluxrpc.com",
  networkId: 1029,
});

// 调用方式如下 UKey Wallet provider 执行签名
conflux.provider = provider;

使用 SDK 发送交易​

// 构建并发送交易
const tx = await conflux.cfx.sendTransaction({
  from: senderAddress,
  to: recipientAddress,
  value: Conflux.Drip.fromCFX(1), // one CFX
});

console.log("构造出的交易:", tx);

// 等待链上确认
const receipt = await tx.executed();
console.log("交易收据:", receipt);

合约交互​

const contract = conflux.Contract({
  abi: contractABI,
  address: contractAddress,
});

// 执行读取
const callResult = await contract.someViewFunction().call();

// 执行写入
const tx = await contract.someWriteFunction(param1, param2).sendTransaction({
  from: senderAddress,
});

const receipt = await tx.executed();

处理异常​

try {
  const accounts = await provider.request({
    method: "cfx_requestAccounts",
  });
} catch (error) {
  if (error.code === 4001) {
    console.log("用户已拒绝本次请求");
  } else if (error.code === -32603) {
    console.log("Provider 内部错误");
  } else {
    console.error("执行报错:", error.message);
  }
}