免gas兑换
- 1.
- 2.
- 3.对 call_data 进行签名,获取r,s,v,rawTransaction等签名后的数据
- 4.
步骤 3 示例代码
const privateKey = ''; // private key
const transactionData = '{
gasLimit: 100000,
data: '0xaxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
chainId: 56,
to: '0x0000000000000xxxxx',
nonce: 50,
gasPrice: '3150000000'
}'
const account = web3.eth.accounts.privateKeyToAccount(privateKey);
const signedTx = await account.signTransaction(transactionData);
const r = signedTx.r;
const s = signedTx.s;
const v = signedTx.v;
const rawTransaction = signedTx.rawTransaction;
1. 接口调用：
https://{host}/gt/swap/v1/noGasSwap
2. 请求参数实例
参数 | 是否必须 | 说明 |
|---|---|---|
orderId | 是 | eg：5d3b383f-5b58-4a35-87b6-2de8d23a492e |
r | 是 | eg：0xxxxxxx |
s | 是 | eg：0xxxxxxx |
v | 是 | eg: 0xxx |
rawTransaction | 是 | eg: 0xxxxxxx |
3.请求参数示例
{
//订单号
"orderId": "5d3b383f-xxxx-xxxx-xxxx-2de8d23a492e",
"r": "0xxxx",
"s": "0xxxxx",
"v": "0xxx",
"rawTransaction": "0xxxxxxxxx"
}
4.返回结果示例
{
"orderId": "5d3b383f-xxxx-xxxx-xxxx-2de8d23a492e",
"transactionHash": "0xxxxxxxxxxxxxx"
}
5.返回参数说明
字段名称 | 字段 | 数据类型 | 备注 |
|---|---|---|---|
订单号 | orderId | String | 订单号 |
交易 hash | transactionHash | String | 交易 hash |
java代码示例
```java
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\n \"orderId\": \"5d3b383f-xxx-xxx-87b6-xxx\",\n \"r\": \"0xxxx\",\n \"s\": \"0xxxx\",\n \"v\": \"0xxxx\",\n \"rawTransaction\": \"0xxxx\"\n}");
Request request = new Request.Builder()
.url("https://www.swftc.info/gt/swap/v1/noGasSwap")
.method("POST", body)
.addHeader("Content-Type", "application/json")
.build();
Response response = client.newCall(request).execute();
```
curl示例
```powershell
curl --location 'https://www.swftc.info/gt/swap/v1/noGasSwap' \
--header 'Content-Type: application/json' \
--data '{
"orderId": "5d3b383f-xxx-xxx-87b6-xxx",
"r": "0xxxx",
"s": "0xxxx",
"v": "0xxxx",
"rawTransaction": "0xxxx"
}'
```
Last modified 3mo ago