你可能已經讀過，可以設定預設的[回應狀態碼](../tutorial/response-status-code.md)。

但有些情況你需要回傳與預設不同的狀態碼。

## 使用情境 { #use-case }

例如，假設你預設想回傳 HTTP 狀態碼 "OK" `200`。

但如果資料不存在，你想要建立它，並回傳 HTTP 狀態碼 "CREATED" `201`。

同時你仍希望能用 `response_model` 過濾並轉換所回傳的資料。

在這些情況下，你可以使用 `Response` 參數。

## 使用 `Response` 參數 { #use-a-response-parameter }

你可以在你的路徑操作函式（path operation function）中宣告一個 `Response` 型別的參數（就像你可以對 Cookies 和標頭那樣）。

package okhttp3

import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import okhttp3.FallbackTestClientSocketFactory.Companion.TLS_FALLBACK_SCSV

/**
 * An SSLSocketFactory that delegates calls. Sockets created by the delegate are wrapped with ones
 * that will not accept the [TLS_FALLBACK_SCSV] cipher, thus bypassing server-side fallback
 * checks on platforms that support it. Unfortunately this wrapping will disable any

## Пример использования { #use-case }

Например, представьте, что вы хотите по умолчанию возвращать HTTP статус-код «OK» `200`.

Но если данные не существовали, вы хотите создать их и вернуть HTTP статус-код «CREATED» `201`.

При этом вы всё ещё хотите иметь возможность фильтровать и преобразовывать возвращаемые данные с помощью `response_model`.

Для таких случаев вы можете использовать параметр `Response`.

    Object listener = new Object();
    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();
    queue.addListener(listener, directExecutor());

    Multiset<Object> counters = ConcurrentHashMultiset.create();
    queue.enqueue(incrementingEvent(counters, listener, 1));
    queue.enqueue(incrementingEvent(counters, listener, 2));
    queue.enqueue(incrementingEvent(counters, listener, 3));

    Object listener = new Object();
    ListenerCallQueue<Object> queue = new ListenerCallQueue<>();
    queue.addListener(listener, directExecutor());

    Multiset<Object> counters = ConcurrentHashMultiset.create();
    queue.enqueue(incrementingEvent(counters, listener, 1));
    queue.enqueue(incrementingEvent(counters, listener, 2));
    queue.enqueue(incrementingEvent(counters, listener, 3));

    public DependenciesInfoTask() {
        setDescription("Create a CSV file with dependencies information.");
    }

    @TaskAction
    public void generateDependenciesInfo() throws IOException {

        final DependencySet runtimeDependencies = runtimeConfiguration.getAllDependencies();
        // we have to resolve the transitive dependencies and create a group:artifactId:version map

                   const char* device_type);

// Create a ServerDef with the given `job_name` and add `num_tasks` tasks in it.
tensorflow::ServerDef GetServerDef(const tensorflow::string& job_name,
                                   int num_tasks);

// Create a ServerDef with job name "localhost" and add `num_tasks` tasks in it.
tensorflow::ServerDef GetServerDef(int num_tasks);

    return new Enums();
  }

  @Override
  public Multiset<AnEnum> create(Object... elements) {
    AnEnum[] array = new AnEnum[elements.length];
    int i = 0;
    for (Object e : elements) {
      array[i++] = (AnEnum) e;
    }
    return create(array);
  }

  protected abstract Multiset<AnEnum> create(AnEnum[] elements);

  @Override
  public AnEnum[] createArray(int length) {

  @Override
  public final BiMap<String, String> create(Object... entries) {
    @SuppressWarnings("unchecked")
    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }

  @Override
  public final BiMap<String, String> create(Object... entries) {
    @SuppressWarnings("unchecked")
    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }