An example how to generate & use the Datatrans Java SDK from the openapi specification.

Generating the Java SDK

# Generate the source files
$ mvn clean compile

Deploy to your own artifacts sever

Currently, the Datatrans Java SDK is not yet available on Maven Central (or something similar). That's why you manually need to deploy it to your own artifacts hosting solution.

# You might have to adjust your ~/.m2/settings.xml or add a <distributionManagement> section to the pom.xml
$ mvn deploy

Using the Java SDK

Once deployed, add the following dependency:

Maven users

Add this dependency to your project's POM:

<dependency>
  <groupId>ch.datatrans</groupId>
  <artifactId>datatrans-java-sdk</artifactId>
  <version>2.0.15</version>
  <scope>compile</scope>
</dependency>

Gradle users

Add this dependency to your project's build file:

compile "ch.datatrans:datatrans-java-sdk:2.0.15"

Invoking the SDK

ApiClient defaultClient = Configuration.getDefaultApiClient();
defaultClient.setBasePath("https://api.sandbox.datatrans.com");

// Configure HTTP basic authorization: Basic
HttpBasicAuth Basic = (HttpBasicAuth) defaultClient.getAuthentication("Basic");
Basic.setUsername("1100017675"); // your Datatrans merchantId
Basic.setPassword("password"); // your Datatrans server to server password

V1TransactionsApi transactionsApiInstance = new V1TransactionsApi(defaultClient);

RedirectRequest redirectRequest = new RedirectRequest();
redirectRequest.successUrl("https://pay.sandbox.datatrans.com/upp/merchant/successPage.jsp")
        .cancelUrl("https://pay.sandbox.datatrans.com/upp/merchant/cancelPage.jsp")
        .errorUrl("https://pay.sandbox.datatrans.com/upp/merchant/errorPage.jsp");

InitRequest initRequest = new InitRequest();
initRequest.currency("CHF")
        .paymentMethods(List.of(InitRequest.PaymentMethodsEnum.VIS))
        .redirect(redirectRequest)
        .amount(100L)
        .refno(String.valueOf(System.currentTimeMillis()));

try {
    InitResponse result = transactionsApiInstance.init(initRequest);
    System.out.println(result);
} catch (ApiException e) {
    System.err.println("Exception when calling V1TransactionsApi#init");
    System.err.println("Status code: " + e.getCode());
    System.err.println("Reason: " + e.getResponseBody());
    System.err.println("Response headers: " + e.getResponseHeaders());
    e.printStackTrace();
}