使用会话令牌
会话令牌将用户自动补全搜索的查询和选择阶段归入不同的会话，以便进行结算。以下示例展示了如何在“自动补全（新）”和“地点详情（新）”调用中使用会话令牌。
创建会话令牌
用户负责为每个会话生成唯一的会话令牌。Google 建议您使用版本 4 UUID。
发出“自动补全（新）”请求
“自动补全（新）”请求是一个 HTTP POST 请求。如需详细了解请求正文参数，请参阅地点自动补全（新）请求。
以下一系列请求显示了用户搜索北京的一家披萨店。当用户开始输入查询时，系统会针对每次按键操作调用自动补全（新）。在每次调用中，生成的会话令牌都会作为参数传递。
第一个请求和响应
请求 1
curl -X POST -d '{
"input": "p",
"sessionToken": "3519edfe-0f75-4a30-bfe4-7cbd89340b2c",
"locationBias": {
"circle": {
"center": {
"latitude": 37.7937,
"longitude": -122.3965
},
"radius": 500.0
}
}
}' -H 'Content-Type: application/json' -H "X-Goog-Api-Key: YOUR_API_KEY" \
https://places.googleapis.com/v1/places:autocomplete
回应 1
{
"suggestions": [
{
"placePrediction": {
"place": "places/ChIJHSGzi_yAhYARnrPmDWAx9ro",
"placeId": "ChIJHSGzi_yAhYARnrPmDWAx9ro",
"text": {
"text": "PIER 39, The Embarcadero, San Francisco, CA, USA",
"matches": [
{
"endOffset": 1
}
]
},
"structuredFormat": {
"mainText": {
"text": "PIER 39",
"matches": [
{
"endOffset": 1
}
]
},
"secondaryText": {
"text": "The Embarcadero, San Francisco, CA, USA"
}
},
"types": [
"historical_landmark",
"shopping_mall",
"point_of_interest",
"establishment",
"marina",
"tourist_attraction"
]
}
},
]
/ ... /
}
第二个请求和响应
请求 2
curl -X POST -d '{
"input": "pi",
"sessionToken": "3519edfe-0f75-4a30-bfe4-7cbd89340b2c",
"locationBias": {
"circle": {
"center": {
"latitude": 37.7937,
"longitude": -122.3965
},
"radius": 500.0
}
}
}' -H 'Content-Type: application/json' -H "X-Goog-Api-Key: YOUR_API_KEY" \
https://places.googleapis.com/v1/places:autocomplete
回应 2
{
"suggestions": [
{
"placePrediction": {
"place": "places/ChIJHSGzi_yAhYARnrPmDWAx9ro",
"placeId": "ChIJHSGzi_yAhYARnrPmDWAx9ro",
"text": {
"text": "PIER 39, The Embarcadero, San Francisco, CA, USA",
"matches": [
{
"endOffset": 2
}
]
},
"structuredFormat": {
"mainText": {
"text": "PIER 39",
"matches": [
{
"endOffset": 2
}
]
},
"secondaryText": {
"text": "The Embarcadero, San Francisco, CA, USA"
}
},
"types": [
"establishment",
"point_of_interest",
"shopping_mall",
"marina",
"historical_landmark",
"tourist_attraction"
]
}
},
/.../
]
}
第三个请求和响应
请求 3
curl -X POST -d '{
"input": "piz",
"sessionToken": "3519edfe-0f75-4a30-bfe4-7cbd89340b2c",
"locationBias": {
"circle": {
"center": {
"latitude": 37.7937,
"longitude": -122.3965
},
"radius": 500.0
}
}
}' -H 'Content-Type: application/json' -H "X-Goog-Api-Key: YOUR_API_KEY" https://places.googleapis.com/v1/places:autocomplete
回应 3
{
"suggestions": [
{
"placePrediction": {
"place": "places/ChIJ_QJSSfGAhYARQVFJBNKy3HE",
"placeId": "ChIJ_QJSSfGAhYARQVFJBNKy3HE",
"text": {
"text": "Pizza By The Slice, Grant Avenue, San Francisco, CA, USA",
"matches": [
{
"endOffset": 3
}
]
},
"structuredFormat": {
"mainText": {
"text": "Pizza By The Slice",
"matches": [
{
"endOffset": 3
}
]
},
"secondaryText": {
"text": "Grant Avenue, San Francisco, CA, USA"
}
},
"types": [
"establishment",
"point_of_interest",
"food",
"pizza_restaurant",
"restaurant"
]
}
},
/.../
]
}
结束会话
如需终止会话，请向“地点详情（新）”或“地址验证”发出请求，并传递您用于“自动补全（新）”请求的同一会话令牌。
发出“地点详情（新）”请求
“地点详情（新）”请求是 HTTP GET 请求。如需详细了解请求正文参数，请参阅地点详情（新）请求。
以下“地点详情（新）”请求包含所选地点的 id 和在之前的“自动补全（新）”调用中使用的 sessionToken。
curl -X GET -H 'Content-Type: application/json' \ -H "X-Goog-Api-Key: YOUR_API_KEY" \ -H "X-Goog-FieldMask: id,displayName,accessibilityOptions,businessStatus" \ https://places.googleapis.com/v1/places/ChIJ_QJSSfGAhYARQVFJBNKy3HE?sessionToken=3519edfe-0f75-4a30-bfe4-7cbd89340b2c
如果地点 id 为 ChIJ_QJSSfGAhYARQVFJBNKy3HE，此调用会生成以下 JSON 响应：
{
"id": "ChIJ_QJSSfGAhYARQVFJBNKy3HE",
"businessStatus": "OPERATIONAL",
"displayName": {
"text": "Pizza By The Slice",
"languageCode": "en"
},
"accessibilityOptions": {
"wheelchairAccessibleParking": false,
"wheelchairAccessibleEntrance": true
}
}
发出地址验证请求
地址验证请求是一个 HTTP POST 请求。如需详细了解请求正文参数，请参阅发送地址验证请求。
以下地址验证请求包含所选地点的地址（可在“自动补全（新）”响应的text 字段中找到），以及之前的“自动补全（新）”调用中使用的 sessionToken。
curl -X POST -d '{
"sessionToken": "3519edfe-0f75-4a30-bfe4-7cbd89340b2c",
"address": {
"addressLines": "Pizza By The Slice, Grant Avenue, San Francisco, CA, USA"
}
}' \
-H 'Content-Type: application/json' \
"https://addressvalidation.googleapis.com/v1:validateAddress?key=YOUR_API_KEY"
该调用会生成以下 JSON 响应：
{
"result": {
"verdict": {
"inputGranularity": "PREMISE",
"validationGranularity": "PREMISE",
"geocodeGranularity": "PREMISE",
"hasInferredComponents": true
},
"address": {
"formattedAddress": "Pizza By The Slice, Grant Avenue, San Francisco, CA 94133, USA",
"postalAddress": {
"regionCode": "US",
"languageCode": "en",
"postalCode": "94133",
"administrativeArea": "CA",
"locality": "San Francisco",
"addressLines": [
"Pizza By The Slice",
"Grant Ave"
]
},
"addressComponents": [
{
"componentName": {
"text": "Pizza By The Slice",
"languageCode": "en"
},
"componentType": "point_of_interest",
"confirmationLevel": "CONFIRMED"
},
{
"componentName": {
"text": "Grant Avenue",
"languageCode": "en"
},
"componentType": "route",
"confirmationLevel": "CONFIRMED"
},
{
"componentName": {
"text": "San Francisco",
"languageCode": "en"
},
"componentType": "locality",
"confirmationLevel": "CONFIRMED"
},
{
"componentName": {
"text": "CA",
"languageCode": "en"
},
"componentType": "administrative_area_level_1",
"confirmationLevel": "CONFIRMED"
},
{
"componentName": {
"text": "USA",
"languageCode": "en"
},
"componentType": "country",
"confirmationLevel": "CONFIRMED"
},
{
"componentName": {
"text": "94133"
},
"componentType": "postal_code",
"confirmationLevel": "CONFIRMED",
"inferred": true
}
],
"missingComponentTypes": [
"street_number"
]
},
"geocode": {
"location": {
"latitude": 37.800504,
"longitude": -122.4074794
},
"plusCode": {
"globalCode": "849VRH2V+62"
},
"bounds": {
"low": {
"latitude": 37.800504,
"longitude": -122.4074794
},
"high": {
"latitude": 37.800504,
"longitude": -122.4074794
}
},
"featureSizeMeters": 10,
"placeId": "ChIJ_QJSSfGAhYARQVFJBNKy3HE",
"placeTypes": [
"food",
"restaurant",
"point_of_interest",
"establishment"
]
},
"uspsData": {
"standardizedAddress": {
"firstAddressLine": "PIZZA BY THE SLICE",
"secondAddressLine": "GRANT AVE",
"cityStateZipAddressLine": "SAN FRANCISCO",
"city": "SAN FRANCISCO",
"state": "CA",
"zipCode": "94133"
},
"dpvFootnote": "A1M1",
"postOfficeCity": "SAN FRANCISCO",
"postOfficeState": "CA"
}
},
"responseId": "4b669675-2c3b-463a-ae20-400248cf6ac9"
}
放弃会话
如果用户放弃会话，该会话终止。例如，如果用户开始搜索披萨店，但没有选择地点（触发地点详情（新）调用）或验证地址（触发地址验证调用），会话就会终止，而且会话令牌将过期。