开发指南

{

    "clientSerialNo":"1661242378542",

    "data":"eyJuYW1lIjogIuWwj+aYjiIsICJhZ2UiOiA4fQ==",

    "encryptType":"BASE64",

    "merchantNo":"123",

    "signData":"326c67656b1c0093f93adb53eb352305",

    "signType":"MD5",

    "timestamp":1661242378542
}

{
    "code":"000000",
    "message":"请求成功",
    "clientSerialNo":"1661242378542",
    "data":"eyJuYW1lIjogIuWwj+aYjiIsICJhZ2UiOiA4fQ==",
    "encryptType":"BASE64",
    "merchantNo":"123",
    "signData":"326c67656b1c0093f93adb53eb352305",
    "signType":"MD5",
    "timestamp":1661242378542
}

{
    "code":"000000",
    "message":"请求成功",
    "clientSerialNo":"1661242378542",
    "data":"eyJuYW1lIjogIuWwj+aYjiIsICJhZ2UiOiA4fQ==",
    "encryptType":"BASE64",
    "merchantNo":"123",
    "signData":"326c67656b1c0093f93adb53eb352305",
    "signType":"MD5",
    "timestamp":1661242378542
}

<!-- 引用工具包 -->
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.22</version>
</dependency>

/**
 * 发票开具结果查询
 */
public void getInvoiceInfo(String requestNo) throws Exception{
    if(StringUtils.isEmpty(requestNo)){
        return;
    }
    // 商户编号（标普智元分配）
    String MERCHANT_NO="xxx";
    // 请求秘钥（标普智元分配）
    String API_KEY="xxx";
    Map<String,Object> dataMap = new HashMap<>();
    // 订单请求流水号
    dataMap.put("requestNo",requestNo);
    String encodeReqData = new String(Base64.encodeBase64(JSONUtil.toJsonStr(dataMap).getBytes("UTF-8")));
    String signData = getStringMD5(API_KEY+encodeReqData);
    Map<String,Object> reqMap = new HashMap<>();
    reqMap.put("clientSerialNo","123456");
    reqMap.put("encryptType","BASE64");
    reqMap.put("merchantNo",MERCHANT_NO);
    reqMap.put("signType","MD5");
    reqMap.put("data",encodeReqData);
    reqMap.put("signData",signData);
    reqMap.put("timestamp",String.valueOf(System.currentTimeMillis()));
    log.info("发票开具结果查询,请求报文：{}", JSONUtil.toJsonStr(reqMap));
    HttpResponse response = HttpRequest.post("http://ibms-test.wecube.com/ibms/invoice/v1/etax/getInvoiceInfo").body(JSONUtil.toJsonStr(reqMap))
            .contentType("application/json;charset=utf-8").timeout(30000).execute();
    log.info("发票开具结果查询,响应报文：{}", JSONUtil.toJsonStr(response));
    String result = response.body();
    Map<String, Object> rspMap = JSONUtil.toBean(result, Map.class);
    if (isSuccessResult(API_KEY, rspMap)) {
        String data = rspMap.get("data").toString();
        String rspData = new String(Base64.decodeBase64(data), Charset.forName("UTF-8"));
        log.info("发票开具结果查询，响应业务对象：{}", rspData);
    } else {
        log.info("发票开具结果查询失败");
    }
}

/**
 * 获取字符串的MD5
 * @param input
 * @return
 */
public String getStringMD5(String input){
    try {
        // get MD5 digest
        MessageDigest mDigest = MessageDigest.getInstance("MD5");
        byte[] inputArr = input.getBytes();
        mDigest.update(inputArr);
        byte[] resultArr = mDigest.digest();
        //
        return byteArrToHex(resultArr).toLowerCase();
    } catch (NoSuchAlgorithmException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}

/**
 * 将字节数组转换为16进制字符串
 * @return 16进制字符串
 */
private String byteArrToHex(byte[] byteArr) {
    char[] hexDigits = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
    char[] resultCharArr = new char[byteArr.length*2];
    int index = 0;
    for (byte b : byteArr) {
        resultCharArr[index++] = hexDigits[b>>> 4 & 0xf];
        resultCharArr[index++] = hexDigits[b & 0xf];
    }
    return new String(resultCharArr);
}

/**
 * 判断验签结果是否正确
 */
public boolean isSuccessResult(String apiKey, Map<String, Object> rspMap) {
    try {
        StringBuffer sb = new StringBuffer(apiKey).append(rspMap.get("data"));
        String encodeSignData = getStringMD5(sb.toString());
        return encodeSignData.equals(rspMap.get("signData"));
    } catch (Exception e) {
        return false;
    }
}