使用 Gemini API 進行函式呼叫
透過函式呼叫,您可以將模型連結至外部工具和 API。 模型不會生成文字回覆,而是判斷何時應呼叫特定函式,並提供執行實際動作所需的參數。這項技術可讓模型成為自然語言與現實世界動作和資料之間的橋梁。函式呼叫功能有 3 個主要用途:
- 擴增知識:從資料庫、API 和知識庫等外部來源存取資訊。
- 擴充功能:使用外部工具執行運算,並擴充模型限制,例如使用計算機或建立圖表。
- 採取行動:使用 API 與外部系統互動,例如安排預約、建立發票、傳送電子郵件或控制智慧住宅裝置。
Python
from google import genai
schedule_meeting_function = {
"type": "function",
"name": "schedule_meeting",
"description": "Schedules a meeting with specified attendees at a given time and date.",
"parameters": {
"type": "object",
"properties": {
"attendees": {"type": "array", "items": {"type": "string"}},
"date": {"type": "string", "description": "Date (e.g., '2024-07-29')"},
"time": {"type": "string", "description": "Time (e.g., '15:00')"},
"topic": {"type": "string", "description": "The meeting topic."},
},
"required": ["attendees", "date", "time", "topic"],
},
}
client = genai.Client()
interaction = client.interactions.create(
model="gemini-3-flash-preview",
input="Schedule a meeting with Bob and Alice for 03/14/2025 at 10:00 AM about Q3 planning.",
tools=[{"type": "function", **schedule_meeting_function}],
)
for step in interaction.steps:
if step.type == "function_call":
print(f"Function to call: {step.name}")
print(f"Arguments: {step.arguments}")
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const scheduleMeetingFunction = {
type: 'function',
name: 'schedule_meeting',
description: 'Schedules a meeting with specified attendees at a given time and date.',
parameters: {
type: 'object',
properties: {
attendees: { type: 'array', items: { type: 'string' } },
date: { type: 'string', description: 'Date (e.g., "2024-07-29")' },
time: { type: 'string', description: 'Time (e.g., "15:00")' },
topic: { type: 'string', description: 'The meeting topic.' },
},
required: ['attendees', 'date', 'time', 'topic'],
},
};
const interaction = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: 'Schedule a meeting with Bob and Alice for 03/27/2025 at 10:00 AM about Q3 planning.',
tools: [scheduleMeetingFunction],
});
for (const step of interaction.steps) {
if (step.type === 'function_call') {
console.log(`Function to call: ${step.name}`);
console.log(`Arguments: ${JSON.stringify(step.arguments)}`);
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "gemini-3-flash-preview",
"input": "Schedule a meeting with Bob and Alice for 03/27/2025 at 10:00 AM about Q3 planning.",
"tools": [{
"type": "function",
"name": "schedule_meeting",
"description": "Schedules a meeting with specified attendees at a given time and date.",
"parameters": {
"type": "object",
"properties": {
"attendees": {"type": "array", "items": {"type": "string"}},
"date": {"type": "string"},
"time": {"type": "string"},
"topic": {"type": "string"}
},
"required": ["attendees", "date", "time", "topic"]
}
}]
}'
函式呼叫的運作方式

函式呼叫是指應用程式、模型和外部函式之間結構化的互動:
- 定義函式宣告:向模型定義函式的名稱、參數和用途。
- 使用函式宣告呼叫 LLM:將使用者提示連同函式宣告傳送至模型。
- 執行函式程式碼 (您的責任):模型不會自行執行函式,擷取名稱和引數,並在應用程式中執行。
- 建立易於理解的回覆:將結果傳回模型,生成最終的易於理解的回覆。
這個過程可能會重複多次。模型支援在單一回合中呼叫多個函式 (平行函式呼叫),以及依序呼叫函式 (組合函式呼叫)。
步驟 1:定義函式宣告
Python
set_light_values_declaration = {
"type": "function",
"name": "set_light_values",
"description": "Sets the brightness and color temperature of a light.",
"parameters": {
"type": "object",
"properties": {
"brightness": {
"type": "integer",
"description": "Light level from 0 to 100",
},
"color_temp": {
"type": "string",
"enum": ["daylight", "cool", "warm"],
"description": "Color temperature",
},
},
"required": ["brightness", "color_temp"],
},
}
def set_light_values(brightness: int, color_temp: str) -> dict:
"""Set the brightness and color temperature of a room light."""
return {"brightness": brightness, "colorTemperature": color_temp}
JavaScript
const setLightValuesTool = {
type: 'function',
name: 'set_light_values',
description: 'Sets the brightness and color temperature of a light.',
parameters: {
type: 'object',
properties: {
brightness: { type: 'number', description: 'Light level from 0 to 100' },
color_temp: { type: 'string', enum: ['daylight', 'cool', 'warm'] },
},
required: ['brightness', 'color_temp'],
},
};
function setLightValues(brightness, color_temp) {
return { brightness: brightness, colorTemperature: color_temp };
}
步驟 2:使用函式宣告呼叫模型
Python
from google import genai
client = genai.Client()
interaction = client.interactions.create(
model="gemini-3-flash-preview",
input="Turn the lights down to a romantic level",
tools=[set_light_values_declaration],
)
# Find the function call step
fc_step = next(s for s in interaction.steps if s.type == "function_call")
print(fc_step)
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const interaction = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: 'Turn the lights down to a romantic level',
tools: [setLightValuesTool],
});
// Find the function call step
const fcStep = interaction.steps.find(s => s.type === 'function_call');
console.log(fcStep);
模型會傳回包含 type、name 和 arguments 的 function_call 步驟:
type='function_call'
name='set_light_values'
arguments={'color_temp': 'warm', 'brightness': 25}
步驟 3:執行函式
Python
fc_step = next(s for s in interaction.steps if s.type == "function_call")
if fc_step.name == "set_light_values":
result = set_light_values(**fc_step.arguments)
print(f"Function execution result: {result}")
JavaScript
const fcStep = interaction.steps.find(s => s.type === 'function_call');
let result;
if (fcStep.name === 'set_light_values') {
result = setLightValues(fcStep.arguments.brightness, fcStep.arguments.color_temp);
console.log(`Function execution result: ${JSON.stringify(result)}`);
}
步驟 4:將結果傳回模型
Python
final_interaction = client.interactions.create(
model="gemini-3-flash-preview",
input=[
{
"type": "function_result",
"name": fc_step.name,
"call_id": fc_step.id,
"result": [{"type": "text", "text": json.dumps(result)}],
}
],
tools=[set_light_values_declaration],
previous_interaction_id=interaction.id,
)
print(final_interaction.steps[-1].content[0].text)
JavaScript
const finalInteraction = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: [{
type: 'function_result',
name: fcStep.name,
call_id: fcStep.id,
result: [{ type: 'text', text: JSON.stringify(result) }]
}],
tools: [setLightValuesTool],
previousInteractionId: interaction.id,
});
console.log(finalInteraction.steps.at(-1).content[0].text);
函式宣告
函式宣告會以工具形式傳遞,並包含下列項目:
type(字串):自訂函式必須為"function"。name(字串):不重複的函式名稱 (使用底線或駝峰式大小寫)。description(字串):清楚說明函式的用途。parameters(物件):函式預期的輸入參數。type(字串):整體資料類型,例如object。properties(物件):含有類型和說明的個別參數。required(陣列):必要參數名稱。
使用思考模型呼叫函式
Gemini 3 和 2.5 系列模型會使用內部「思考」程序,提升函式呼叫功能。 SDK 會自動為您處理想法簽章。
平行函式呼叫
如果多個函式彼此獨立,可以一次呼叫:
Python
power_disco_ball = {"type": "function", "name": "power_disco_ball", "description": "Powers the disco ball.",
"parameters": {"type": "object", "properties": {"power": {"type": "boolean"}}, "required": ["power"]}}
start_music = {"type": "function", "name": "start_music", "description": "Play music.",
"parameters": {"type": "object", "properties": {"energetic": {"type": "boolean"}, "loud": {"type": "boolean"}}, "required": ["energetic", "loud"]}}
dim_lights = {"type": "function", "name": "dim_lights", "description": "Dim the lights.",
"parameters": {"type": "object", "properties": {"brightness": {"type": "number"}}, "required": ["brightness"]}}
client = genai.Client()
interaction = client.interactions.create(
model="gemini-3-flash-preview",
input="Turn this place into a party!",
tools=[power_disco_ball, start_music, dim_lights],
generation_config={"tool_choice": "any"},
)
for step in interaction.steps:
if step.type == "function_call":
args = ", ".join(f"{key}={val}" for key, val in step.arguments.items())
print(f"{step.name}({args})")
JavaScript
const powerDiscoBall = { type: 'function', name: 'power_disco_ball', description: 'Powers the disco ball.',
parameters: { type: 'object', properties: { power: { type: 'boolean' } }, required: ['power'] } };
const startMusic = { type: 'function', name: 'start_music', description: 'Play music.',
parameters: { type: 'object', properties: { energetic: { type: 'boolean' }, loud: { type: 'boolean' } }, required: ['energetic', 'loud'] } };
const dimLights = { type: 'function', name: 'dim_lights', description: 'Dim the lights.',
parameters: { type: 'object', properties: { brightness: { type: 'number' } }, required: ['brightness'] } };
const interaction = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: 'Turn this place into a party!',
tools: [powerDiscoBall, startMusic, dimLights],
generationConfig: { toolChoice: 'any' },
});
for (const step of interaction.steps) {
if (step.type === 'function_call') {
console.log(`${step.name}(${JSON.stringify(step.arguments)})`);
}
}
組合式函式呼叫
將多個函式呼叫串聯在一起,處理複雜要求 (例如先取得位置資訊,再取得該位置的天氣資訊)。
Python
def get_weather_forecast(location: str) -> dict:
"""Gets the current weather temperature for a given location."""
return {"temperature": 25, "unit": "celsius"}
def set_thermostat_temperature(temperature: int) -> dict:
"""Sets the thermostat to a desired temperature."""
return {"status": "success"}
client = genai.Client()
interaction = client.interactions.create(
model="gemini-3-flash-preview",
input="If it's warmer than 20°C in London, set the thermostat to 20°C, otherwise 18°C.",
tools=[get_weather_forecast, set_thermostat_temperature],
)
print(interaction.steps[-1].content[0].text)
函式呼叫模式
在 generation_config 中使用 tool_choice 控制模型使用工具的方式:
auto(預設):模型會判斷是否要呼叫函式或直接回覆。any:模型一律會預測函式呼叫。none:模型不得呼叫函式。validated(預先發布版):模型可確保函式結構定義符合規定。
Python
generation_config = {
"tool_choice": {
"allowed_tools": {
"mode": "any",
"tools": ["get_current_temperature"]
}
}
}
JavaScript
const generationConfig = {
toolChoice: {
allowedTools: {
mode: 'any',
tools: ['get_current_temperature']
}
}
};
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: \$GEMINI_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "gemini-3-flash-preview",
"input": "What is the temperature in Boston?",
"tools": [{
"type": "function",
"name": "get_current_temperature",
"description": "Gets the current temperature for a given location.",
"parameters": {
"type": "object",
"properties": {
"location": {"type": "string"}
},
"required": ["location"]
}
}],
"generation_config": {
"tool_choice": {
"allowed_tools": {
"mode": "any",
"tools": ["get_current_temperature"]
}
}
}
}'
使用多功能工具
您可以啟用多項工具,在同一項要求中結合內建工具和函式呼叫。Gemini 3 模型可將內建工具與 Interactions 的函式呼叫功能結合使用。傳遞 previous_interaction_id
會自動循環內建工具環境。
Python
from google import genai
import json
client = genai.Client()
get_weather = {
"type": "function",
"name": "get_weather",
"description": "Gets the weather for a requested city.",
"parameters": {
"type": "object",
"properties": {
"city": {
"type": "string",
"description": "The city and state, e.g. Utqiaġvik, Alaska",
},
},
"required": ["city"],
},
}
tools = [
{"type": "google_search"}, # Built-in tool
get_weather # Custom tool
]
# Turn 1: Initial request with both tools enabled
interaction = client.interactions.create(
model="gemini-3-flash-preview",
input="What is the northernmost city in the United States? What's the weather like there today?",
tools=tools
)
for step in interaction.steps:
if step.type == "function_call":
print(f"Function call: {step.name} (ID: {step.id})")
# Execute your custom function locally
result = {"response": "Very cold. 22 degrees Fahrenheit."}
# Turn 2: Provide the function result back to the model.
# Passing `previous_interaction_id` automatically circulates the
# built-in Google Search context from Turn 1
interaction_2 = client.interactions.create(
model="gemini-3-flash-preview",
previous_interaction_id=interaction.id,
tools=tools,
input=[{
"type": "function_result",
"name": step.name,
"call_id": step.id,
"result": [{"type": "text", "text": json.dumps(result)}]
}]
)
print(interaction_2.steps[-1].content[0].text)
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const weatherTool = {
type: 'function',
name: 'get_weather',
description: 'Gets the weather for a given location.',
parameters: {
type: 'object',
properties: {
location: { type: 'string', description: 'The city and state, e.g. San Francisco, CA' }
},
required: ['location']
}
};
const tools = [
{type: 'google_search'}, // Built-in tool
weatherTool // Custom tool
];
// Turn 1: Initial request with both tools enabled
let interaction = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: "What is the northernmost city in the United States? What's the weather like there today?",
tools: tools
});
for (const step of interaction.steps) {
if (step.type === 'function_call') {
console.log(`Function call: ${step.name} (ID: ${step.id})`);
// Execute your custom function locally
const result = {response: "Very cold. 22 degrees Fahrenheit."};
// Turn 2: Provide the function result back to the model.
const interaction_2 = await client.interactions.create({
model: 'gemini-3-flash-preview',
previousInteractionId: interaction.id,
tools: tools,
input: [{
type: 'function_result',
name: step.name,
call_id: step.id,
result: [{ type: 'text', text: JSON.stringify(result) }]
}]
});
console.log(interaction_2.steps.at(-1).content[0].text);
}
}
多模態函式回應
如果是 Gemini 3 系列模型,您可以在傳送給模型的回覆函式部分中加入多模態內容。模型可以在下一個回合處理這類多模態內容,進而生成更實用的回覆。
如要在函式回應中加入多模態資料,請在 function_result 步驟的 result 欄位中,將資料加入一或多個內容區塊。每個內容區塊都必須指定 type (例如 "text"、"image")。
以下範例說明如何在互動中,將含有圖片資料的函式回應傳回模型:
Python
import base64
from google import genai
import requests
client = genai.Client()
# Find the function call step
tool_call = next(s for s in interaction.steps if s.type == "function_call")
# Execute your tool to get image bytes
image_path = "https://goo.gle/instrument-img"
image_bytes = requests.get(image_path).content
base64_image_data = base64.b64encode(image_bytes).decode("utf-8")
final_interaction = client.interactions.create(
model="gemini-3-flash-preview",
previous_interaction_id=interaction.id,
input=[
{
"type": "function_result",
"name": tool_call.name,
"call_id": tool_call.id,
"result": [
{"type": "text", "text": "instrument.jpg"},
{
"type": "image",
"mime_type": "image/jpeg",
"data": base64_image_data,
},
],
}
],
)
print(final_interaction.steps[-1].content[0].text)
JavaScript
import { GoogleGenAI } from "@google/genai";
const ai = new GoogleGenAI({});
// Find the function call step
const toolCall = interaction.steps.find(s => s.type === 'function_call');
// Execute your tool to get image bytes and convert to base64
// (Implementation depends on your environment)
const base64ImageData = "BASE64_IMAGE_DATA";
const finalInteraction = await ai.interactions.create({
model: 'gemini-3-flash-preview',
previousInteractionId: interaction.id,
input: [{
type: 'function_result',
name: toolCall.name,
call_id: toolCall.id,
result: [
{ type: 'text', text: 'instrument.jpg' },
{
type: 'image',
mimeType: 'image/jpeg',
data: base64ImageData,
}
]
}]
});
console.log(finalInteraction.steps.at(-1).content[0].text);
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: \$GEMINI_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "gemini-3-flash-preview",
"previous_interaction_id": "INTERACTION_ID",
"input": [
{
"type": "function_result",
"name": "get_image",
"call_id": "call_123",
"result": [
{"type": "text", "text": "instrument.jpg"},
{
"type": "image",
"mime_type": "image/jpeg",
"data": "BASE64_IMAGE_DATA"
}
]
}
]
}'
使用函式呼叫取得結構化輸出內容
對於 Gemini 3 系列模型,請將函式呼叫與結構化輸出結合,確保回覆格式一致。
遠端 MCP (Model Context Protocol)
Interactions API 支援連線至遠端 MCP 伺服器,讓模型存取外部工具和服務。您可以在工具設定中提供伺服器 name 和 url。
使用遠端 MCP 時,請注意下列限制:
- 伺服器類型:遠端 MCP 僅適用於可串流的 HTTP 伺服器。系統不支援 SSE (伺服器傳送事件) 伺服器。
- 模型支援:遠端 MCP 目前不適用於 Gemini 3 模型。我們即將支援 Gemini 3。
- 命名:MCP 伺服器名稱不得包含
-字元。請改用snake_case伺服器名稱。
| 欄位 | 類型 | 必要 | 說明 |
|---|---|---|---|
type |
string |
是 | 必須為 "mcp_server"。 |
name |
string |
否 | MCP 伺服器的顯示名稱。 |
url |
string |
否 | MCP 伺服器端點的完整網址。 |
headers |
object |
否 | 以 HTTP 標頭形式傳送至伺服器的鍵值組 (例如驗證權杖)。 |
allowed_tools |
array |
否 | 限制代理程式可呼叫伺服器的哪些工具。 |
範例
Python
from google import genai
client = genai.Client()
interaction = client.interactions.create(
model="gemini-2.5-flash",
input="Check the status of my last server deployment.",
tools=[
{
"type": "mcp_server",
"name": "Deployment Tracker",
"url": "https://mcp.example.com/mcp",
"headers": {"Authorization": "Bearer my-token"},
}
]
)
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const interaction = await client.interactions.create({
model: 'gemini-2.5-flash',
input: 'Check the status of my last server deployment.',
tools: [
{
type: 'mcp_server',
name: 'Deployment Tracker',
url: 'https://mcp.example.com/mcp',
headers: { Authorization: 'Bearer my-token' }
}
]
});
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
"model": "gemini-2.5-flash",
"input": "Check the status of my last server deployment.",
"tools": [
{
"type": "mcp_server",
"name": "Deployment Tracker",
"url": "https://mcp.example.com/mcp",
"headers": {"Authorization": "Bearer my-token"}
}
]
}'
串流工具呼叫
使用串流工具時,模型會在串流中產生函式呼叫,做為一連串的 step.delta 事件。工具引數可使用 arguments 串流為部分引數。您必須彙整這些 delta,才能重建完整的工具呼叫並執行。
Python
import json
from google import genai
client = genai.Client()
weather_tool = {
"type": "function",
"name": "get_weather",
"description": "Gets the weather for a given location.",
"parameters": {
"type": "object",
"properties": {
"location": {"type": "string", "description": "The city and state"}
},
"required": ["location"]
}
}
stream = client.interactions.create(
model="gemini-3-flash-preview",
input="What is the weather in Paris?",
tools=[weather_tool],
stream=True
)
current_calls = {}
tool_calls = []
for event in stream:
if event.event_type == "step.start":
if event.step.type == "function_call":
current_calls[event.index] = {
"id": event.step.id,
"name": event.step.name,
"arguments": ""
}
elif event.event_type == "step.delta":
if event.delta.type == "arguments":
if event.index in current_calls:
current_calls[event.index]["arguments"] += event.delta.partial_arguments
elif event.delta.type == "text":
print(event.delta.text, end="", flush=True)
elif event.event_type == "interaction.completed":
for index, call in current_calls.items():
args = call["arguments"]
if args:
args = json.loads(args)
else:
args = {}
tool_calls.append({
"type": "function_call",
"id": call["id"],
"name": call["name"],
"arguments": args
})
print(f"\nFinal tool calls ready to execute:")
print(json.dumps(tool_calls, indent=2))
JavaScript
import { GoogleGenAI } from '@google/genai';
const client = new GoogleGenAI({});
const weatherTool = {
type: 'function',
name: 'get_weather',
description: 'Gets the weather for a given location.',
parameters: {
type: 'object',
properties: {
location: { type: 'string', description: 'The city and state' }
},
required: ['location']
}
};
const stream = await client.interactions.create({
model: 'gemini-3-flash-preview',
input: 'What is the weather in Paris?',
tools: [weatherTool],
stream: true,
});
const currentCalls = new Map();
let toolCalls = [];
for await (const event of stream) {
if (event.type === 'step.start') {
if (event.step.type === 'function_call') {
currentCalls.set(event.index, {
id: event.step.id,
name: event.step.name,
arguments: ''
});
}
} else if (event.type === 'step.delta') {
if (event.delta.type === 'arguments') {
if (currentCalls.has(event.index)) {
currentCalls.get(event.index).arguments += event.delta.partial_arguments;
}
} else if (event.delta.type === 'text') {
process.stdout.write(event.delta.text);
}
} else if (event.type === 'interaction.completed') {
toolCalls = Array.from(currentCalls.values()).map(call => ({
type: 'function_call',
id: call.id,
name: call.name,
arguments: call.arguments ? JSON.parse(call.arguments) : {}
}));
console.log('\nFinal tool calls ready to execute:');
console.log(JSON.stringify(toolCalls, null, 2));
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions?alt=sse" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
"model": "gemini-3-flash-preview",
"input": "What is the weather in Paris?",
"tools": [{
"type": "function",
"name": "get_weather",
"description": "Gets the weather for a given location.",
"parameters": {
"type": "object",
"properties": {
"location": {"type": "string", "description": "The city and state"}
},
"required": ["location"]
}
}],
"stream": true
}'
支援的模型
| 型號 | 函式呼叫 | 平行摺 | 構圖 |
|---|---|---|---|
| Gemini 3 Pro 預先發布版 | ✔️ | ✔️ | ✔️ |
| Gemini 3 Flash 預先發布版 | ✔️ | ✔️ | ✔️ |
| Gemini 2.5 Pro | ✔️ | ✔️ | ✔️ |
| Gemini 2.5 Flash | ✔️ | ✔️ | ✔️ |
| Gemini 2.5 Flash-Lite | ✔️ | ✔️ | ✔️ |
| Gemini 2.0 Flash | ✔️ | ✔️ | ✔️ |
| Gemini 2.0 Flash-Lite | X | X | X |
最佳做法
- 函式和參數說明:清楚明確。
- 命名:使用描述性名稱,不得包含空格或特殊字元。
- 嚴格型別:使用特定型別 (整數、字串、列舉)。
- 工具選取:最多啟用 10 到 20 個工具。
- 提示工程:提供脈絡和指令。
溫度:如要進行確定性呼叫,請使用低溫 (例如 0)。
驗證:先驗證函式呼叫,再執行。
錯誤處理:導入完善的錯誤處理機制。
安全性:為外部 API 使用適當的驗證方式。
注意事項和限制
- 僅支援部分 OpenAPI 結構定義。
- 如果是
any模式,API 可能會拒絕過大或深度巢狀結構的結構定義。 - Python 支援的參數類型有限。