```console
$ pip install python-multipart
```

///

## `Form` 임포트하기

`fastapi`에서 `Form`을 임포트합니다:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

## `Form` 매개변수 정의하기

`Body` 또는 `Query`와 동일한 방식으로 폼 매개변수를 만듭니다:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[9] *}

예를 들어, OAuth2 사양을 사용할 수 있는 방법 중 하나("패스워드 플로우"라고 함)로 `username`과 `password`를 폼 필드로 보내야 합니다.

 */
public class ErrorForm {

    /** Map of form fields and their validation error messages */
    public Map<String, String[]> fields = new HashMap<>();

    /** Search query parameter that caused the error */
    public String q;

    /** URL parameter associated with the error */
    public String url;

    /** Number of results parameter */
    public String num;

    open fun put(body: RequestBody): Builder = method("PUT", body)

    open fun patch(body: RequestBody): Builder = method("PATCH", body)

    open fun query(body: RequestBody): Builder = method("QUERY", body)

    open fun method(
      method: String,
      body: RequestBody?,
    ): Builder =
      apply {
        require(method.isNotEmpty()) {
          "method.isEmpty() == true"

     */
    @Required
    @Min(0)
    @Max(100)
    @ValidateTypeFailure
    public Integer crawlingThreadCount;

    /**
     * Enable or disable search query logging.
     * When enabled, user search queries are logged for analysis.
     */
    @Size(max = 10)
    public String searchLog;

    /**
     * Enable or disable user information tracking.

                                <div class="form-group">
                                    <la:text styleClass="query form-control" property="q"
                                             title="Search" size="50" maxlength="1000"
                                             placeholder="Type a search query"/>
                                </div>
                                <div class="form-group ml-sm-2">

/// info

`File` is a class that inherits directly from `Form`.

But remember that when you import `Query`, `Path`, `File` and others from `fastapi`, those are actually functions that return special classes.

///

/// tip

To declare File bodies, you need to use `File`, because otherwise the parameters would be interpreted as query parameters or body (JSON) parameters.

///

The files will be uploaded as "form data".

	if err != nil {
		t.Error("Unexpected error: ", err)
	}

	v := redirectURL.Query()
	v.Add("bucket", info.Bucket)
	v.Add("key", info.Name)
	v.Add("etag", "\""+info.ETag+"\"")
	redirectURL.RawQuery = v.Encode()
	expectedLocation := redirectURL.String()

	// Check the new location url
	if rec.Header().Get("Location") != expectedLocation {

        final Map<String, Object> requestBody = new HashMap<>();
        final String keyProp = NAME_PREFIX + id;
        requestBody.put(KEY_PROPERTY, keyProp);
        requestBody.put("queries", "query" + id);
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {
        final Map<String, Object> updateMap = new HashMap<>();
        updateMap.put("queries", "new_query");

        super(request);
        this.servletPath = servletPath;
    }

    /**
     * Gets the servlet path for this request.
     * Returns the custom servlet path unless the query string contains SAStruts.method.
     *
     * @return The servlet path
     */
    @Override
    public String getServletPath() {

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[3] *}

## Define `File` and `Form` parameters { #define-file-and-form-parameters }

Create file and form parameters the same way you would for `Body` or `Query`:

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[10:12] *}

The files and form fields will be uploaded as form data and you will receive the files and form fields.