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CrptApi.java
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CrptApi.java
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import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;
import java.util.concurrent.*;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
//Внешняя библиотека для json
import com.google.gson.Gson;
import com.google.gson.JsonObject;
public class CrptApi {
private final HttpClient httpClient;
private final Semaphore semaphore;
private final ReentrantLock lock;
private final Gson gson;
private final String apiUrl;
public CrptApi(TimeUnit timeUnit, int requestLimit) {
this(timeUnit, requestLimit, HttpClient.newHttpClient(), new Gson(), "https://ismp.crpt.ru/api/v3/lk/documents/create");
}
//Позволяет использовать dependency injection для gson и httpClient
public CrptApi(TimeUnit timeUnit, int requestLimit, HttpClient httpClient, Gson gson, String apiUrl) {
this.httpClient = httpClient;
this.gson = gson;
this.apiUrl = apiUrl;
this.lock = new ReentrantLock();
int permits = requestLimit;
long period = timeUnit.toMillis(1);
this.semaphore = new Semaphore(permits);
ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
scheduler.scheduleAtFixedRate(() -> {
//реализуем thread-safe
lock.lock();
try {
semaphore.release(permits - semaphore.availablePermits());
} finally {
lock.unlock();
}
}, period, period, TimeUnit.MILLISECONDS);
}
public void createDocument(Document document, String signature) throws InterruptedException, ExecutionException, TimeoutException {
semaphore.acquire();
lock.lock();
try {
JsonObject jsonDocument = gson.toJsonTree(document).getAsJsonObject();
jsonDocument.addProperty("signature", signature);
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create(apiUrl))
.timeout(Duration.ofMinutes(2))
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString(gson.toJson(jsonDocument)))
.build();
CompletableFuture<HttpResponse<String>> response = httpClient.sendAsync(request, HttpResponse.BodyHandlers.ofString());
// TODO: Вывод результата, возможно, нужен в другой форме, а так только печатается в консоли
System.out.println(response.get().body());
} finally {
lock.unlock();
semaphore.release();
}
}
public static class Document {
private String participantInn;
private String docId;
private String docStatus;
private String docType;
private boolean importRequest;
private String ownerInn;
private String producerInn;
private String productionDate;
private String productionType;
private Product[] products;
private String regDate;
private String regNumber;
// Сеттеры
public void setParticipantInn(String participantInn) {
this.participantInn = participantInn;
}
public void setDocId(String docId) {
this.docId = docId;
}
public void setDocStatus(String docStatus) {
this.docStatus = docStatus;
}
public void setDocType(String docType) {
this.docType = docType;
}
public boolean isImportRequest() {
return importRequest;
}
public void setImportRequest(boolean importRequest) {
this.importRequest = importRequest;
}
public void setOwnerInn(String ownerInn) {
this.ownerInn = ownerInn;
}
public void setProducerInn(String producerInn) {
this.producerInn = producerInn;
}
public void setProductionDate(String productionDate) {
this.productionDate = productionDate;
}
public void setProductionType(String productionType) {
this.productionType = productionType;
}
public void setProducts(Product[] products) {
this.products = products;
}
public void setRegDate(String regDate) {
this.regDate = regDate;
}
public void setRegNumber(String regNumber) {
this.regNumber = regNumber;
}
}
public static class Product {
private String certificateDocument;
private String certificateDocumentDate;
private String certificateDocumentNumber;
private String ownerInn;
private String producerInn;
private String productionDate;
private String tnvedCode;
private String uitCode;
private String uituCode;
// Сеттеры
public void setCertificateDocument(String certificateDocument) {
this.certificateDocument = certificateDocument;
}
public void setCertificateDocumentDate(String certificateDocumentDate) {
this.certificateDocumentDate = certificateDocumentDate;
}
public void setCertificateDocumentNumber(String certificateDocumentNumber) {
this.certificateDocumentNumber = certificateDocumentNumber;
}
public void setOwnerInn(String ownerInn) {
this.ownerInn = ownerInn;
}
public void setProducerInn(String producerInn) {
this.producerInn = producerInn;
}
public void setProductionDate(String productionDate) {
this.productionDate = productionDate;
}
public void setTnvedCode(String tnvedCode) {
this.tnvedCode = tnvedCode;
}
public void setUitCode(String uitCode) {
this.uitCode = uitCode;
}
public void setUituCode(String uituCode) {
this.uituCode = uituCode;
}
}
}
//Использование класса CrptApi
public class CrptApiExample {
public static void main(String[] args) {
// 5 запросов в минуту
CrptApi crptApi = new CrptApi(TimeUnit.MINUTES, 3);
CrptApi.Product product = new CrptApi.Product();
product.setCertificateDocument("certDoc");
product.setCertificateDocumentDate("2020-01-23");
product.setCertificateDocumentNumber("certNumber");
product.setOwnerInn("1234567890");
product.setProducerInn("1234567890");
product.setProductionDate("2020-01-23");
product.setTnvedCode("code");
product.setUitCode("uitCode");
product.setUituCode("uituCode");
CrptApi.Document document = new CrptApi.Document();
document.setParticipantInn("1234567890");
document.setDocId("doc123");
document.setDocStatus("NEW");
document.setDocType("LP_INTRODUCE_GOODS");
document.setImportRequest(true);
document.setOwnerInn("1234567890");
document.setProducerInn("1234567890");
document.setProductionDate("2020-01-23");
document.setProductionType("Type1");
document.setRegDate("2020-01-23");
document.setRegNumber("reg123");
// Добавляем продукт в документ
document.setProducts(new CrptApi.Product[]{product});
// Подпись документа
String signature = "signature";
// Отправляем документ в API
try {
crptApi.createDocument(document, signature);
System.out.println("Документ успешно отправлен!");
} catch (InterruptedException | ExecutionException | TimeoutException e) {
System.err.println("Ошибка при отправке документа: " + e.getMessage());
}
}
}
//Тестовые данные
// {
// "description": {
// "participantInn": "string"
// },
// "doc_id": "string",
// "doc_status": "string",
// "doc_type": "LP_INTRODUCE_GOODS",
// "importRequest": true,
// "owner_inn": "string",
// "participant_inn": "string",
// "producer_inn": "string",
// "production_date": "2020-01-23",
// "production_type": "string",
// "products": [
// {
// "certificate_document": "string",
// "certificate_document_date": "2020-01-23",
// "certificate_document_number": "string",
// "owner_inn": "string",
// "producer_inn": "string",
// "production_date": "2020-01-23",
// "tnved_code": "string",
// "uit_code": "string",
// "uitu_code": "string"
// }
// ],
// "reg_date": "2020-01-23",
// "reg_number": "string"
// }