選取平台： Android iOS 網路服務

使用工作階段符記

工作階段符記會將使用者自動完成搜尋的查詢和選取階段歸入不同的工作階段，以用於計費。下列範例說明如何在 Autocomplete (新版) 和 Place Details (新版) 呼叫中使用工作階段符記。

建立工作階段權杖

使用者必須為每個工作階段產生不重複的工作階段權杖。Google 建議使用第 4 版 UUID。

提出 Autocomplete (新版) 要求

Autocomplete (New) 要求是 HTTP POST 要求。如要進一步瞭解要求主體參數，請參閱「自動完成 (新版)」要求。

下列一系列要求顯示使用者在舊金山搜尋披薩店。使用者開始輸入查詢時，系統會針對每個按鍵呼叫 Autocomplete (New)。產生的工作階段權杖會做為參數傳遞至每個呼叫。

第一個要求和回應

要求 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

回應 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"
        ]
      }
    },
  ]
   / ... /
}

第二個要求和回應

要求 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

回應 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"
        ]
      }
    },
  /.../
  ]
}

第三個要求和回應

要求 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

回應 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"
        ]
      }
    },
  /.../
  ]
}

結束工作階段

透過向「地點詳情（新）」或「地址驗證」發出請求，並傳遞與「自動完成（新）」請求相同的會話令牌來終止會話。

發出 Place Details (新版) 要求

Place Details (新版) 要求是 HTTP GET 要求。如要進一步瞭解要求主體參數，請參閱「Place Details (New)」要求。

下列 Place Details (新版) 要求包含所選地點的 id，以及先前 Autocomplete (新版) 呼叫中使用的 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 中的位置 id，該呼叫產生以下 JSON 回應：

{
  "id": "ChIJ_QJSSfGAhYARQVFJBNKy3HE",
  "businessStatus": "OPERATIONAL",
  "displayName": {
    "text": "Pizza By The Slice",
    "languageCode": "en"
  },
  "accessibilityOptions": {
    "wheelchairAccessibleParking": false,
    "wheelchairAccessibleEntrance": true
  }
}

發起地址驗證請求

地址驗證要求是 HTTP POST 要求。如要進一步瞭解要求主體參數，請參閱「傳送地址驗證要求」。

以下地址驗證請求包含所選地點的位址（在自動完成（新）回應的 text 欄位中找到）以及先前自動完成（新）呼叫中使用的 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"

這項呼叫會產生下列 JSON 回應：

    {
      "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"
    }

放棄工作階段

如果使用者放棄工作階段，工作階段就會終止。例如，如果使用者開始搜尋披薩店，但沒有選擇地點（觸發地點詳情（新建）呼叫）或驗證地址（觸發地址驗證呼叫），則會話終止，會話令牌過期。

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