在Google Apps腳本中使用Gmail API搜索郵件

Question

我已經通過StackOverflow搜索了（小）成功，因此我向比我更專業的編碼人員尋求幫助。

我讀過這個話題SO gmailapp-add-label-to-specific-message-not-the-thread這導致我GIST，我已經採取代碼標記單個消息（而不是整個線程）。

現在我需要在Google Apps腳本中使用Gmail API的搜索功能;我在Google Developer's Site here上找到了一個Javascript代碼段。我正在嘗試使用GIST中的代碼作爲示例來調整此代碼，但沒有成功。

我需要搜索功能來獲得一個消息ID的數組傳遞給另一個功能（目前工作，））。

下面是我寫的代碼：

/** 
* Retrieve Messages in user's mailbox matching query. 
* 
* @param {String} userId User's email address. The special value 'me' 
* can be used to indicate the authenticated user. 
* @param {String} query String used to filter the Messages listed. 
* @param {Function} callback Function to call when the request is complete. 
*/ 
function GAPIlistMessages(userId, query) { //callback option removed from original code 

// GET https://www.googleapis.com/gmail/v1/users/userId/messages 
    var url = 'https://www.googleapis.com/gmail/v1/users/${userId}/messages' 
    .replace("${userId}","me") 
      var headers = { 
    Authorization: 'Bearer ' + ScriptApp.getOAuthToken() 
    }; 

    var request = { 
     'userId': userId, 
     'q': query 
    }; 

    var params = { 
    method: "GET", 
    contentType: "application/json", 
    headers: headers, 
    muteHttpExceptions: true, // for debugging 
    payload: JSON.stringify(request) 
    }; 

    var check = UrlFetchApp.getRequest(url, params); // for debugging 
    var response = UrlFetchApp.fetch(url, params); 

    var result = response.getResponseCode(); 
    if (result == '200') { // OK 
    var msgIds = JSON.parse(response.getContentText()).msgIds; 
    Logger.log(msgIds) 
    } 
    else { 
    // This is only needed when muteHttpExceptions == true 
    var err = JSON.parse(response.getContentText()); 
    throw new Error('Error (' + result + ") " + err.error.message); 
    } 
} 

當我啓動的功能，通過這個參數： 用戶id = '我' 查詢= 'deliveredto：myemail+test@mydomain.com'

我收到此錯誤

[16-02-24 06:37:29:218 PST] Avvio dell'esecuzione 
[16-02-24 06:37:29:236 PST] ScriptApp.getOAuthToken() [0 secondi] 
[16-02-24 06:37:29:237 PST] UrlFetchApp.getRequest([https://www.googleapis.com/gmail/v1/users/me/messages, {headers={Authorization=Bearer <<<token removed>>>}, method=GET, payload={"userId":"me",...) [0 secondi] 
[16-02-24 06:37:29:308 PST] UrlFetchApp.fetch([https://www.googleapis.com/gmail/v1/users/me/messages, {headers={Authorization=Bearer <<<token removed>>>}, method=GET, payload={"userId":"me",...) [0,07 secondi] 
[16-02-24 06:37:29:308 PST] HTTPResponse.getResponseCode() [0 secondi] 
[16-02-24 06:37:29:308 PST] HTTPResponse.getContentText() [0 secondi] 
[16-02-24 06:37:29:311 PST] Esecuzione non riuscita: Error: Error (400) 'raw' RFC822 payload message string or uploading message via /upload/* URL required (riga 212, file "Test Tools") [0,075 secondi di esecuzione totale] 

我覺得我親近的解決方案，但我想不出問題出在哪裏。 任何幫助將是非常讚賞

曼努埃爾

Answer 1

感謝您的意見，我已經找到了解決方案，並重寫代碼：

function GAPIlistMessages(userId, query) { 
    var url = 'https://www.googleapis.com/gmail/v1/users/'+userId+'/messages'+'?q='+query+'&fields=messages%2Fid' // JSON array of message ID 
    var headers = { 
    Authorization: 'Bearer ' + ScriptApp.getOAuthToken() 
    }; 

    var params = { 
    method: "GET", 
    contentType: "application/json", 
    headers: headers, 
    muteHttpExceptions: true, // for debugging 
    }; 

    var check = UrlFetchApp.getRequest(url, params); // for debugging 
    var response = UrlFetchApp.fetch(url, params); 

    var result = response.getResponseCode(); 
    if (result == '200') { // OK 
    var msgIds = JSON.parse(response.getContentText()); 
    //Logger.log(response.getContentText()) 
    return msgIds; 

    } 
    else { 
    // This is only needed when muteHttpExceptions == true 
    var err = JSON.parse(response.getContentText()); 
    throw new Error('Error (' + result + ") " + err.error.message); 
    } 
} 

現在我可以檢索所有給定查詢的消息ID並將該列表傳遞給另一個函數以提取附件+其他任務。 這種方法的真正優點是我可以處理單個消息，而不是使用簡單的GAS命令處理整個線程。

Answer 2

如果你看看documentation，它說，​​是請求的主體。您的查詢不應該在身體，但查詢字符串參數：

function GAPIlistMessages(query) { 
    var url = 'https://www.googleapis.com/gmail/v1/users/me/messages?q=' + 
    encodeURIComponent(query) 

    var response = UrlFetchApp.getRequest(url, { 
    headers: { 
     Authorization: 'Bearer ' + ScriptApp.getOAuthToken() 
    } 
    }); 
}