使用Postman通过HTTP请求更新Google Sheet

Absolutely! You can absolutely call this API endpoint directly via standard HTTP requests—no need to rely on the PHP quickstart module or any specific client library. This is perfect for your server-side offline token scenario. Let’s break down how to set this up in Postman:

1. Handle Authentication (Critical for Offline Use) #

Since you’re using a server-generated offline token, you’ll need a valid access token to attach to your request. Here are the two common workflows for this:

If you’re using a Service Account (ideal for server-side offline tasks) #

• First, share your target Google Sheet with the service account’s email address (from the GCP Console) and grant it edit access.
• Generate a signed JWT token using your service account’s private key, then exchange it for an access token by sending a POST request to https://oauth2.googleapis.com/token with these parameters:
  • grant_type: urn:ietf:params:oauth:grant-type:jwt-bearer
  • assertion: Your signed JWT string
• The response will include an access_token—this is what you’ll use for authentication.

If you’re using an OAuth2 Refresh Token (from a one-time user authorization) #

• Send a POST request to https://oauth2.googleapis.com/token with these parameters:
  • grant_type: refresh_token
  • client_id: Your OAuth2 client ID
  • client_secret: Your OAuth2 client secret
  • refresh_token: Your stored offline refresh token
• You’ll get a new access_token to use for your Sheets API request.

In Postman, add this access token to your request headers:

Authorization: Bearer <your-access-token>

2. Build the spreadsheets.values/update Request in Postman #

Core Request Details: #

• Method: PUT (required for this update endpoint)
• URL: https://sheets.googleapis.com/v4/spreadsheets/{SPREADSHEET_ID}/values/{RANGE}?valueInputOption={OPTION}
  • Replace {SPREADSHEET_ID} with the ID of your Google Sheet (found in the sheet’s URL)
  • Replace {RANGE} with the cell range you want to update (e.g., Sheet1!A1:B2; use single quotes for sheet names with spaces: 'Q3 Sales'!C1:D10)
  • Replace {OPTION} with either RAW (stores values exactly as entered) or USER_ENTERED (parses values like a human would, e.g., formulas, dates)

Request Body (JSON): #

Send a JSON payload with your values. Example:

{
  "range": "Sheet1!A1:B2",
  "majorDimension": "ROWS",
  "values": [
    ["Product", "Stock Count"],
    ["Laptop", 12],
    ["Phone", 28]
  ]
}

3. Common Pitfalls to Avoid #

• Permission Errors: Ensure your access token includes the https://www.googleapis.com/auth/spreadsheets scope (required for editing; use the readonly scope only if you don’t need to modify data).
• Range Formatting: Double-check your range syntax—invalid ranges will return a 400 error.
• Value Input Option: If you’re trying to input formulas, use USER_ENTERED; RAW will store the formula as plain text instead of executing it.

内容的提问来源于stack exchange，提问作者Jack Robson