{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

## まとめ { #recap }

リクエストが単一のボディしか持てない場合でも、*path operation function*に複数のボディパラメータを追加することができます。

しかし、**FastAPI** はそれを処理し、関数内の正しいデータを与え、*path operation*内の正しいスキーマを検証し、文書化します。

また、ボディの一部として受け取る単数値を宣言することもできます。

 *
 * ## Web Socket Lifecycle
 *
 * Upon normal operation each web socket progresses through a sequence of states:
 *
 *  * **Connecting:** the initial state of each web socket. Messages may be enqueued but they won't
 *    be transmitted until the web socket is open.
 *
 *  * **Open:** the web socket has been accepted by the remote peer and is fully operational.
 *    Messages in either direction are enqueued for immediate transmission.

你希望把與使用者相關的「路徑操作 (path operation)」從其他程式碼分離，讓結構更有條理。

但它仍然是同一個 FastAPI 應用程式 / Web API 的一部分（屬於同一個「Python 套件」）。

你可以使用 `APIRouter` 為該模組建立路徑操作。

### 匯入 `APIRouter` { #import-apirouter }

你可以像對 `FastAPI` 類別那樣匯入並建立一個「實例」：

{* ../../docs_src/bigger_applications/app_an_py310/routers/users.py hl[1,3] title["app/routers/users.py"] *}

### 使用 `APIRouter` 宣告路徑操作 { #path-operations-with-apirouter }

然後用它來宣告你的路徑操作。

 *   <li>A key is contained in the multimap if and only if it maps to at least one value. Any
 *       operation that causes a key to have zero associated values has the effect of
 *       <i>removing</i> that key from the multimap.
 *   <li>The total entry count is available as {@link #size}.
 *   <li>Many complex operations become easier; for example, {@code
 *       Collections.min(multimap.values())} finds the smallest value across all keys.

        assertTrue("Close should be called", closeCalled.get());
    }

    // ============================================================
    // Tests for delete operations error handling
    // ============================================================

    @Test
    public void test_deleteNonExistentId() throws Exception {

     * @param out the outgoing buffer containing the request
     * @param off the offset into the outgoing buffer
     * @param length the length of data to send
     * @param inB the buffer to receive the response
     * @return the number of bytes received
     * @throws IOException if an I/O error occurs during the operation
     */

	// A list operation only returns elements that match
	// this prefix.
	// An empty prefix matches any value.
	Prefix string

	// ContinueAt is the name of the element from where
	// a listing should continue. It allows paginated
	// listings.
	ContinueAt string

	// Limit limits the number of elements returned by
	// a single list operation. If <= 0, a reasonable

/**
 * Helper class for managing crawler statistics and performance metrics.
 * This class provides functionality to track, record, and report statistics
 * about crawler operations including timing data, performance metrics, and
 * operational events. It uses an internal cache to maintain statistics
 * objects and provides methods to begin tracking, record events, and
 * finalize statistics collection.
 *
 */

 *
 */
public class AdminRoleAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminRoleAction() {
        super();
    }

    /** Role name for admin role operations */
    public static final String ROLE = "admin-role";

    private static final Logger logger = LogManager.getLogger(AdminRoleAction.class);

    // Statistics
    private final AtomicLong totalRequests = new AtomicLong(0);
    private final AtomicLong totalChannelsCreated = new AtomicLong(0);

    /**
     * Load balancing strategies for distributing operations across channels.
     */
    public enum LoadBalancingStrategy {
        /** Round-robin distribution */
        ROUND_ROBIN,
        /** Least connections */
        LEAST_CONNECTIONS,