/// tip | İpucu

**FastAPI** uygulamanızın herhangi bir yerinde kullanılan bir dependency için override tanımlayabilirsiniz.

Orijinal dependency bir *path operation function* içinde, bir *path operation decorator* içinde (return value kullanmadığınız durumlarda), bir `.include_router()` çağrısında, vb. kullanılıyor olabilir.

FastAPI yine de onu override edebilir.

///

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"testing"
)

func TestSplitPath(t *testing.T) {
	cases := []struct {
		path                          string
		secondIndex                   bool
		expectedListKey, expectedItem string
	}{
		{"format.json", false, "format.json", ""},
		{"users/tester.json", false, "users/", "tester.json"},

    assertThat(reader.readLine()).isEqualTo("hello world")
    val request = server.takeRequest()
    assertThat(request.requestLine).isEqualTo(
      "GET /a/deep/path?key=foo%20bar HTTP/1.1",
    )
    assertThat(request.path).isEqualTo("/a/deep/path?key=foo%20bar")
    val requestUrl = request.requestUrl
    assertThat(requestUrl!!.scheme).isEqualTo("http")
    assertThat(requestUrl.host).isEqualTo(server.hostName)

If you have quite some technical knowledge (coroutines, threads, blocking, etc.) and are curious about how FastAPI handles `async def` vs normal `def`, go ahead.

///

### Path operation functions { #path-operation-functions }

When you declare a *path operation function* with normal `def` instead of `async def`, it is run in an external threadpool that is then awaited, instead of being called directly (as it would block the server).

            int rn) throws CIFSException {
        if (log.isDebugEnabled()) {
            log.debug("Resolving DFS path " + path);
        }

        if (path.length() >= 2 && path.charAt(0) == '\\' && path.charAt(1) == '\\') {
            throw new SmbException("Path must not start with double slash: " + path);
        }

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/items/": {
                    "post": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/images/multiple/": {
                    "post": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

    /**
     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
     * use instead of the default one.
     */
    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
            ".mvn/wrapper/maven-wrapper.properties";

    /**
     * Path where the maven-wrapper.jar will be saved to.
     */

 */
class AutobahnTester {
  val client = OkHttpClient()

  private fun newWebSocket(
    path: String,
    listener: WebSocketListener,
  ): WebSocket {
    val request =
      Request
        .Builder()
        .url(HOST + path)
        .build()
    return client.newWebSocket(request, listener)
  }

  fun run() {
    try {
      val count = getTestCount()

例如，在 OAuth2 規範的一種用法（稱為「password flow」）中，必須以表單欄位傳送 `username` 與 `password`。

該 <dfn title="規範">規範</dfn> 要求欄位名稱必須正好是 `username` 和 `password`，而且必須以表單欄位傳送，而不是 JSON。

使用 `Form` 時，你可以宣告與 `Body`（以及 `Query`、`Path`、`Cookie`）相同的設定，包括驗證、範例、別名（例如用 `user-name` 取代 `username`）等。

/// info

`Form` 是一個直接繼承自 `Body` 的類別。

///

/// tip

要宣告表單的請求本文，你需要明確使用 `Form`，否則這些參數會被解讀為查詢參數或請求本文（JSON）參數。

///