如何避免從Gmail中加載附件數據Rest API獲取消息

Question

如何避免從Gmail Rest API中獲取附件數據並獲取消息請求。

使用fields參數至少我們能避免加載幾個字段，但是當我想加載郵件正文，附件的數據也與身體磨磨蹭蹭就像IMAP

Answer 1

就像你在做你不拿到附件IMAP。你得到一個attachmentId，你必須使用一個額外的請求來獲取附件。

我剛剛給我發了一封帶有附加圖片的郵件。這是從API響應的樣子：

{ 
"id": "1573ec1aa0976b42", 
"threadId": "1573ec1aa0976b42", 
"labelIds": [ 
    "SENT", 
    "INBOX", 
    "IMPORTANT", 
    "UNREAD" 
], 
"snippet": "", 
"historyId": "939514", 
"internalDate": "1474226662000", 
"payload": { 
    "mimeType": "multipart/related", 
    "filename": "", 
    "headers": [ ... ], 
    "body": { 
    "size": 0 
    }, 
    "parts": [ 
    { 
    "mimeType": "multipart/alternative", 
    "filename": "", 
    "headers": [ 
    { 
     "name": "Content-Type", 
     "value": "multipart/alternative; boundary=94eb2c0d3cba8637a2053ccd2461" 
    } 
    ], 
    "body": { 
    "size": 0 
    }, 
    "parts": [ 
    { ... }, 
    { 
     "partId": "1", 
     "mimeType": "image/png", 
     "filename": "Screen Shot", 
     "headers": [ ... ], 
     "body": { 
     "attachmentId": "ANGjdJ-bmCvsIaV-4KfALXzVV_D567w4i6ksLnwIZhLAl3VXCE335663UbmOLC_vbLrCFusNtnWVpdTv3i88uR482kFwLZqAcwmI7C5gFlamob2aK4-lqAPlCZs17jtCQR9y5Mt4nnpP_Kg64N9qgXbDF0E2vYnEw4xwtEKEo4fRIAbc94ZjjfynFD832mh1B37XFMt-bYw9wkNv24xBife0koBNYpKs-gGLJkfu2EoZouqunGDX9ry1jq2jW2AClWcFXPXvgRBMjUcoRDPtvb9LLLrBhDjU1hu6r1Ibc3c2BSoBogT8QyIp2VUCuFU", 
     "size": 1511996 
     } 
    } 
    ] 
    }, 
    "sizeEstimate": 1513185 
} 

正如你所看到的，它只是包含attachmentId並沒有實際的附件數據。