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intentando meter los ficheros redsys

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jjimenez
2025-10-29 14:10:10 +01:00
parent 5e9631073e
commit ae2904aa71
8 changed files with 190 additions and 0 deletions
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src/main/java/com/imprimelibros/erp/redsys/RedsysService.java Normal file
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package com.imprimelibros.erp.redsys;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
@Service
public class RedsysService {
@Value("${redsys.merchant-code}") private String merchantCode;
@Value("${redsys.terminal}") private String terminal;
@Value("${redsys.currency}") private String currency;
@Value("${redsys.transaction-type}") private String txType;
@Value("${redsys.secret-key}") private String secretKey;
@Value("${redsys.urls.ok}") private String urlOk;
@Value("${redsys.urls.ko}") private String urlKo;
@Value("${redsys.urls.notify}") private String urlNotify;
@Value("${redsys.environment}") private String env;
public record PaymentRequest(String order, long amountCents, String description) {}
public record FormPayload(String action, String signatureVersion, String merchantParameters, String signature) {}
public FormPayload buildRedirectForm(PaymentRequest req) {
// RedsysAPI proviene del JAR oficial
com.redsys.api.RedsysAPI api = new com.redsys.api.RedsysAPI();
Map<String, String> mp = new HashMap<>();
mp.put("DS_MERCHANT_AMOUNT", String.valueOf(req.amountCents()));
mp.put("DS_MERCHANT_ORDER", req.order());
mp.put("DS_MERCHANT_MERCHANTCODE", merchantCode);
mp.put("DS_MERCHANT_CURRENCY", currency);
mp.put("DS_MERCHANT_TRANSACTIONTYPE", txType);
mp.put("DS_MERCHANT_TERMINAL", terminal);
mp.put("DS_MERCHANT_MERCHANTNAME", "Tu Comercio");
mp.put("DS_MERCHANT_PRODUCTDESCRIPTION", req.description());
mp.put("DS_MERCHANT_URLOK", urlOk);
mp.put("DS_MERCHANT_URLKO", urlKo);
mp.put("DS_MERCHANT_MERCHANTURL", urlNotify);
String merchantParameters = api.createMerchantParameters(mp);
String signature = api.createMerchantSignature(secretKey);
String action = "test".equalsIgnoreCase(env)
? "https://sis-t.redsys.es:25443/sis/realizarPago"
: "https://sis.redsys.es/sis/realizarPago";
return new FormPayload(action, "HMAC_SHA256_V1", merchantParameters, signature);
}
// Validación de la notificación on-line (webhook).
public RedsysNotification validateAndParse(String dsSignature, String dsSignatureVersion, String dsMerchantParametersB64) {
com.redsys.api.RedsysAPI api = new com.redsys.api.RedsysAPI();
// 1) Validar firma
String calc = api.createMerchantSignatureNotif(secretKey, dsMerchantParametersB64);
if (!Objects.equals(calc, dsSignature)) {
throw new IllegalArgumentException("Firma Redsys no válida");
}
// 2) Decodificar parámetros
String json = api.decodeMerchantParameters(dsMerchantParametersB64);
Map<String, Object> params = new com.fasterxml.jackson.databind.ObjectMapper()
.readValue(json, new com.fasterxml.jackson.core.type.TypeReference<>() {});
// Campos típicos: Ds_Order, Ds_Amount, Ds_Currency, Ds_Response, etc.
return RedsysNotification.from(params);
}
public static record RedsysNotification(String order, String dsResponse, long amountCents, String currency) {
static RedsysNotification from(Map<String, Object> p) {
String order = (String) p.get("Ds_Order");
String resp = String.valueOf(p.get("Ds_Response"));
long amount = Long.parseLong((String) p.get("Ds_Amount"));
String curr = String.valueOf(p.get("Ds_Currency"));
return new RedsysNotification(order, resp, amount, curr);
}
// Éxito si 0–99.
public boolean authorized() {
try {
int r = Integer.parseInt(dsResponse);
return r >= 0 && r <= 99;
} catch (Exception e) { return false; }
}
}
}