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 建议使用版本 4 UUID。
发出“自动补全（新）”请求
“自动补全（新）”请求是 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在搜索旧金山的一家比萨店。当用户开始输入查询时，系统会针对每次按键调用“自动补全（新）”。系统会在每次调用中将生成的会话令牌作为参数传递。
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
通过向“地点详情（新）”或“地址验证”发出请求并传递与“自动补全（新）”请求相同的会话令牌来终止会话。
发出“地点详情（新）”请求
“地点详情（新）”请求是一个 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 以及之前的“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
使用 ChIJ_QJSSfGAhYARQVFJBNKy3HE 的地点 id，该调用会生成以下 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 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（位于“地点自动补全（新）”响应的text 字段中），以及之前的“地点自动补全（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，会话将终止。例如，如果用户开始搜索比萨店，但未选择地点（触发“地点详情（新）”调用）或验证地址（触发“地址验证”调用），则会话会终止，并且会话令牌会过期。