Requirements
- Java 8 or later (supports 8, 11, 17, 21)
- Maven 3.6+ or Gradle 6.0+
Installation
- Maven
- Gradle
<dependency>
<groupId>com.waffo</groupId>
<artifactId>waffo-java</artifactId>
<version>3.0.0</version>
</dependency>
implementation 'com.waffo:waffo-java:3.0.0'
Please check the latest version on Maven Central.
Initialization
import com.waffo.Waffo;
import com.waffo.types.config.WaffoConfig;
import com.waffo.types.config.Environment;
WaffoConfig config = WaffoConfig.builder()
.apiKey("your-api-key")
.privateKey("your-base64-encoded-private-key")
.waffoPublicKey("waffo-public-key")
.merchantId("your-merchant-id")
.environment(Environment.SANDBOX)
.build();
Waffo waffo = new Waffo(config);
Payments
import com.waffo.types.ApiResponse;
import com.waffo.types.order.*;
import com.waffo.types.payment.ProductName;
import com.waffo.types.iso.CurrencyCode;
import java.util.UUID;
String paymentRequestId = UUID.randomUUID().toString().replace("-", "");
CreateOrderParams params = CreateOrderParams.builder()
.paymentRequestId(paymentRequestId)
.merchantOrderId("ORDER_" + System.currentTimeMillis())
.orderCurrency(CurrencyCode.HKD)
.orderAmount("100.00")
.orderDescription("Test Product")
.notifyUrl("https://your-site.com/webhook")
.userInfo(UserInfo.builder()
.userId("user_123")
.userEmail("user@example.com")
.userTerminal(UserTerminalType.WEB)
.build())
.paymentInfo(PaymentInfo.builder()
.productName(ProductName.ONE_TIME_PAYMENT)
.build())
.build();
ApiResponse<CreateOrderData> response = waffo.order().create(params);
if (response.isSuccess()) {
CreateOrderData data = response.getData().get();
System.out.println("Redirect URL: " + data.fetchRedirectUrl());
}
Error handling
import com.waffo.exception.WaffoUnknownStatusException;
import com.waffo.exception.WaffoException;
try {
ApiResponse<CreateOrderData> response = waffo.order().create(params);
} catch (WaffoUnknownStatusException e) {
// Important: The payment may have succeeded! Please use the query API to confirm
} catch (WaffoException e) {
// Client-side errors (configuration, signature, etc.)
}