The PDF Generation API for Developers

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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.nio.file.Files;
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import java.nio.file.Path;
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public class DocumentGenerator {
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    private static final String API_URL = "https://api.docstron.com/v1/documents/generate";
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    private static final String BEARER_TOKEN = "adiuahdiahwd";
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    public static void main(String[] args) throws Exception {
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        String jsonPayload = """
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            {
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                "template_id": "template-7b7cfc7a-43fa-4232-9395-c6e5bb8ae7c1",
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                "response_type": "pdf",
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                "data": {
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                    "date": "March 31, 2025",
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                    "invoice_id": "6546789"
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                }
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            }
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            """;
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        HttpClient client = HttpClient.newHttpClient();
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        HttpRequest request = HttpRequest.newBuilder()
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                .uri(URI.create(API_URL))
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                .header("Content-Type", "application/json")
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                .header("Authorization", "Bearer " + BEARER_TOKEN)
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                .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
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                .build();
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        HttpResponse<byte[]> response = client.send(request,
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            HttpResponse.BodyHandlers.ofByteArray());
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        if (response.statusCode() == 200) {
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            Files.write(Path.of("generated-document.pdf"), response.body());
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            System.out.println("Document generated successfully!");
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        } else {
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            System.out.println("Error: " + response.statusCode());
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        }
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    }
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}