今天在搞用开放的第三方api来做查询BTC USDT等操作
用到了resttemplate 但是usdt的搞了很久的403 但是用postman直接访问第三方可以
原来是因为resttemplate要升级一下 才能访问到https的请求
上代码
//查询BTC的 get请求
//https://mainnet.infura.io/YKZGQG2QTBx0tiWoB2IF
//https://mainnet.infura.io/v3/17408bbb3d65465c8dfddba66d1733df
@GetMapping("/queryBtc")
@ResponseBody
public String queryBtc(String address){
String url = "https://api.blockcypher.com/v1/btc/main/addrs/"+address+"/balance";
RestTemplate restTemplate = new RestTemplate();
String result = restTemplate.getForObject(url, String.class);
if (result ==null){
return "";
}
JSONObject resultObj = JSONObject.parseObject(result);
BigDecimal balance = new BigDecimal((Long) resultObj.get("balance")) ;
return balance.divide(new BigDecimal(100000000)).toString();
} //查询usdt的 此处用的是Post请求
@GetMapping("/queryUsdt")
@ResponseBody
public String queryUsdt(String address) {
try {
String url = "https://api.omniwallet.org/v2/address/addr/";
RestTemplate restTemplate = this.restTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
MultiValueMap<String, String> map= new LinkedMultiValueMap<>();
map.add("addr", address);
HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
ResponseEntity<String> response = restTemplate.postForEntity( url, request , String.class);
String result = response.getBody();
if (result ==null){
return "";
}
JSONObject resultObj = JSONObject.parseObject(result);
List<Map<String,Object>> balances = (List<Map<String, Object>>)JSONObject.parseObject(resultObj.get(address).toString()).get("balance");
for ( Map<String,Object> item : balances ) {
if ("SP31".equals(item.get("symbol"))){
return BigDecimal.valueOf(Long.valueOf(item.get("value").toString())).divide(new BigDecimal(100000000)).toString();
}
}
return "";
}catch (Exception e){
logger.error(e.getMessage());
return "";
}
}
//对template的强化
public RestTemplate restTemplate() throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;
SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()
.loadTrustMaterial(null, acceptingTrustStrategy)
.build();
SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);
CloseableHttpClient httpClient = HttpClients.custom()
.setSSLSocketFactory(csf)
.build();
HttpComponentsClientHttpRequestFactory requestFactory =
new HttpComponentsClientHttpRequestFactory();
requestFactory.setHttpClient(httpClient);
RestTemplate restTemplate = new RestTemplate(requestFactory);
return restTemplate;
} /**
* 获取用户地址以太坊余额
*
* @param address
* @return
* @throws IOException
*/
@ResponseBody
@GetMapping("/queryEth")
public BigDecimal getBalance(String address) throws IOException {
Web3j web3j = Web3j.build(new HttpService("自己的eth节点 去web3j上申请"));
EthGetBalance getBalance = web3j.ethGetBalance(address, DefaultBlockParameterName.LATEST).send();
return Convert.fromWei(getBalance.getBalance().toString(), Convert.Unit.ETHER);
} /**
* 查询ETH下代币的余额
* @param walletAddress
* @return
* @throws IOException
*/
@GetMapping("/queryEthContract")
@ResponseBody
public BigDecimal balanceOfContractToken(String contractAddress, String walletAddress) {
Web3j web3j = Web3j.build(new HttpService("自己的节点地址,web3j上申请"));
Function function = new Function("balanceOf",
Arrays.<Type>asList(new Address(walletAddress)),
Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {
}));
TransactionManager transactionManager = new TransactionManager(web3j, walletAddress) {
@Override
public EthSendTransaction sendTransaction(BigInteger gasPrice, BigInteger gasLimit, String to, String data, BigInteger value) throws IOException {
return null;
}
};
String encodedFunction = FunctionEncoder.encode(function);
try {
EthCall ethCall = web3j.ethCall(
org.web3j.protocol.core.methods.request.Transaction.createEthCallTransaction(
transactionManager.getFromAddress(), contractAddress, encodedFunction),
DefaultBlockParameterName.LATEST)
.send();
String result = ethCall.getValue();
if (StringUtils.isNotEmpty(result)) {
if ("0x".equalsIgnoreCase(result) || result.length() == 2) {
result = "0x0";
}
}
return (ethCall == null) ? null : new BigDecimal(CommonUtils.Hex2Decimal(result)).divide(new BigDecimal(1000000000000000000d));
}catch (Exception e){
logger.warn(e.getMessage());
}
return null;
}下面这个是朋友提供给我的 没有试过
/**
* 查询代币余额
*
* @param address 账户地址
* @param contract 合约地址
* @return
* @throws IOException
*/
public BigDecimal getTokenBalance(String address, String contract) throws Exception {
BigInteger balance = BigInteger.ZERO;
Function fn = new Function("balanceOf", Collections.singletonList(new Address(address)), Collections.<TypeReference<?>>emptyList());
String data = FunctionEncoder.encode(fn);
Map<String, String> map = new HashMap<String, String>();
map.put("to", contract);
map.put("data", data);
try {
String methodName = "eth_call";
Object[] params = new Object[]{map, "latest"};
String result = jsonRpcHttpClient.invoke(methodName, params, Object.class).toString();
if (StringUtils.isNotEmpty(result)) {
if ("0x".equalsIgnoreCase(result) || result.length() == 2) {
result = "0x0";
}
balance = Numeric.decodeQuantity(result);
}
} catch (Throwable e) {
throw new Exception("查询接口ERROR");
}
return new BigDecimal(balance);
}忘了加上工具类和pom了 哈哈
package com.example.demo;
import org.web3j.protocol.core.methods.response.TransactionReceipt;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* Created by y on 2018/3/7.
*/
public class CommonUtils {
public static BigDecimal getSTAmount(String input) {
if (input.startsWith("0x")) {
input = input.replace("0x", "");
}
String hexAmount = input.substring(input.length() - 64, input.length());
BigDecimal amount = new BigDecimal(new BigInteger(hexAmount, 16).toString());
BigDecimal bigDecimal = amount.divide(new BigDecimal(1000000000000000000d));
return bigDecimal;
}
public static String getContractAddressTo(String input) {
if (input == null || "".equals(input) || input.length() != 138) return null;
String addressTo = "";
try {
addressTo = "0x" + input.substring(34, input.length() - 64);
} catch (Exception e) {
e.printStackTrace();
}
return addressTo;
}
public static BigDecimal bit18(BigInteger bigInteger) {
BigDecimal amount = new BigDecimal(bigInteger);
BigDecimal bigDecimal = amount.divide(new BigDecimal(1000000000000000000d));
return bigDecimal;
}
/**
* @param transactionReceipt
* @return
* @throws IOException
*/
public static boolean verifyTransaction(TransactionReceipt transactionReceipt, BigInteger ethBlockNumber) throws IOException {
String status = transactionReceipt.getStatus();
boolean statusIsSuccess = "0x1".equals(status);
boolean verifyTrain = ethBlockNumber.subtract(transactionReceipt.getBlockNumber()).compareTo(new BigInteger("12")) > 0;
return statusIsSuccess && verifyTrain;
}
/**
* @param x
* @return
*/
public static BigInteger Hex2Decimal(String x) {
if (x.startsWith("0x")) {
x = x.replace("0x", "");
}
return new BigInteger(x, 16);
}
/**
* @param num
* @return
*/
public static String decimal2Hex(Long num) {
if (num == null) return null;
return Long.toHexString(num);
}
}
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.28</version>
</dependency>
<dependency>
<groupId>org.web3j</groupId>
<artifactId>core</artifactId>
<version>3.5.0</version>
</dependency>