# 表单数据

接收的不是 JSON，而是表单字段时，要使用 `Form`。

!!! info "说明"

    要使用表单，需预先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

    例如，`pip install python-multipart`。

## 导入 `Form`

从 `fastapi` 导入 `Form`：

```Python hl_lines="1"
{!../../../docs_src/request_forms/tutorial001.py!}
```

## 定义 `Form` 参数

创建表单（`Form`）参数的方式与 `Body` 和 `Query` 一样：

#define RARG2 R2
#define RARG3 R3
#define FARG R4

// Called from instrumented code.
// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
	MOVD	addr+0(FP), RARG0
	MOVD	sz+8(FP), RARG1
	MOVD	sp+16(FP), RARG2
	MOVD	pc+24(FP), RARG3
	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
	MOVD	$__asan_read_go(SB), FARG
	JMP	asancall<>(SB)

	_ = x.form // ERROR "x.form undefined (cannot refer to unexported field form)"
	_ = x.forM // ERROR "x.forM undefined (type *big.Float has no field or method forM)"
}

func _() {
	_ = ast.File{Name: nil} // OK
	_ = ast.File{NamE /* ERROR "unknown field NamE in struct literal of type ast.File, but does have Name" */ : nil}

                                        <la:text styleId="term" property="term" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="queries" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.related_query_queries"/></label>

#define RARG2 R6
#define RARG3 R7
#define FARG  R8

// Called from instrumented code.
// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
	MOVV	addr+0(FP), RARG0
	MOVV	sz+8(FP), RARG1
	MOVV	sp+16(FP), RARG2
	MOVV	pc+24(FP), RARG3
	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
	MOVV	$__asan_read_go(SB), FARG
	JMP	asancall<>(SB)

👆 💪 🔬 📁 & 📨 🏑 🎏 🕰 ⚙️ `File` & `Form`.

!!! info
    📨 📂 📁 &amp; /⚖️ 📨 📊, 🥇 ❎ <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

    🤶 Ⓜ. `pip install python-multipart`.

## 🗄 `File` &amp; `Form`

```Python hl_lines="1"
{!../../../docs_src/request_forms_and_files/tutorial001.py!}
```

## 🔬 `File` &amp; `Form` 🔢

<h3 id="searchOptionsLabel">
	<la:message key="labels.search_options" />
</h3>
<div>
	<fieldset class="form-group">
		<legend><la:message key="labels.index_num" /></legend>
		<label for="contentNum"><la:message key="labels.index_num" /></label>
		<la:select property="num" styleId="numSearchOption"
			styleClass="form-control">
			<option value="10">
				<la:message key="labels.search_result_select_num" />
			</option>

<h3 id="searchOptionsLabel">
	<la:message key="labels.search_options" />
</h3>
<div>
	<fieldset class="form-group">
		<legend><la:message key="labels.index_num" /></legend>
		<label for="contentNum"><la:message key="labels.index_num" /></label>
		<la:select property="num" styleId="numSearchOption"
			styleClass="form-control">
			<option value="10">
				<la:message key="labels.search_result_select_num" />
			</option>

                                        <la:text styleId="token" property="token" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="segmentation" class="col-sm-3 text-sm-right col-form-label"><la:message

                                    </div>
                                </div>
                                <c:if test="${crudMode==2}">
                                    <div class="form-group row">
                                        <label class="col-sm-3 text-sm-right col-form-label"><la:message