I tried using the Daraja API with Springboot

<dependency> <groupId>com.mpesa</groupId> <artifactId>daraja</artifactId> <version>1.0.0</version> </dependency> 

import com.mpesa.Daraja; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class DarajaConfig { private String consumerKey = "your-consumer-key"; private String consumerSecret = "your-consumer-secret"; private String shortCode = "your-shortcode"; private String passkey = "your-passkey"; private String testUsername = "test-username"; private String testAmount = "1"; @Bean public Daraja daraja() { return new Daraja(consumerKey, consumerSecret, shortCode, passkey, testUsername, testAmount); } } 

import com.mpesa.Daraja; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/api/payments") public class PaymentController { @Autowired private Daraja daraja; @GetMapping("/initiate") public String initiatePayment(@RequestParam String phoneNumber) { return daraja.initiatePayment(phoneNumber); } }