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(MFC) Outlook --Download Attachments for a Specific MessageSee more Outlook ExamplesDemonstrates how to download the attachments for a particular email message. Note: This example requires Chilkat v9.5.0.67 or greater. This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com
#include <CkHttp.h> #include <CkStringBuilder.h> #include <CkJsonObject.h> #include <CkBinData.h> #include <CkDateTime.h> #include <CkFileAccess.h> void ChilkatSample(void) { CkString strOut; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkHttp http; // Use your previously obtained access token here: // See the following examples for getting an access token: // Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint). // Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint). // Refresh Access Token (Azure AD v2.0 Endpoint). // Refresh Access Token (Azure AD Endpoint). http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN"); CkStringBuilder sbResponse; // Sends: GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments // Note: It is also possible to use the literal string "me" for the current logged-on user. // For example: GET /me/messages/{message_id}/attachments http.ClearUrlVars(); http.SetUrlVar("userPrincipalName","chilkatsoft@outlook.com"); // Assume we already have a message ID from previously listing the messages in a folder const char *messageId = "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA=="; http.SetUrlVar("message_id",messageId); // Send the request to download the attachments. bool success = http.QuickGetSb("https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments",sbResponse); if ((success != true) && (http.get_LastStatus() == 0)) { strOut.append(http.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // The attachment data is contained within the JSON response. CkJsonObject json; json.LoadSb(sbResponse); json.put_EmitCompact(false); strOut.append("Status code = "); strOut.appendInt(http.get_LastStatus()); strOut.append("\r\n"); if (http.get_LastStatus() != 200) { strOut.append(json.emit()); strOut.append("\r\n"); strOut.append("Failed."); strOut.append("\r\n"); } // This is a sample JSON response. The code for parsing and extracting/saving the attachments // is shown below. // { // "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/messages('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D')/attachments", // "value": [ // { // "@odata.type": "#microsoft.graph.fileAttachment", // "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAft6wtbaSJU6sgQLi98DI0Q==", // "lastModifiedDateTime": "2017-05-10T00:30:51Z", // "name": "fishing.pdf", // "contentType": "application/pdf", // "size": 295680, // "isInline": false, // "contentId": "F861B218BE380F44B16933097FDDACFC@namprd20.prod.outlook.com", // "contentLocation": null, // "contentBytes": "JVBERi0xLjMKJcfsj6 ... yZWYKMjk0MzY5CiUlRU9GCg==" // }, // { // "@odata.type": "#microsoft.graph.fileAttachment", // "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAXS7qXQ-iRUCYXnhJpN8Ihg==", // "lastModifiedDateTime": "2017-05-10T00:30:51Z", // "name": "testCert.cer", // "contentType": "application/octet-stream", // "size": 1674, // "isInline": false, // "contentId": "5E51FA33EF0F8941ACC8260395CB1A33@namprd20.prod.outlook.com", // "contentLocation": null, // "contentBytes": "MIIFRjCCBC6gAwIBA ... 7pt3C5w==" // } // ] // } CkStringBuilder sbSavePath; CkBinData attachData; CkDateTime lastMod; CkFileAccess fac; int i = 0; int numMessages = json.SizeOfArray("value"); while (i < numMessages) { json.put_I(i); strOut.append("name: "); strOut.append(json.stringOf("value[i].name")); strOut.append("\r\n"); strOut.append("contentType: "); strOut.append(json.stringOf("value[i].contentType")); strOut.append("\r\n"); int sizeInBytes = json.IntOf("value[i].size"); strOut.append("size: "); strOut.appendInt(sizeInBytes); strOut.append("\r\n"); // Extract the data and save to a file. sbSavePath.SetString("qa_output/"); sbSavePath.Append(json.stringOf("value[i].name")); attachData.Clear(); attachData.AppendEncoded(json.stringOf("value[i].contentBytes"),"base64"); attachData.WriteFile(sbSavePath.getAsString()); // Get the last-modified date/time and set the output file's last-mod date/time.. lastMod.SetFromTimestamp(json.stringOf("value[i].lastModifiedDateTime")); fac.SetLastModified(sbSavePath.getAsString(),lastMod); strOut.append("----"); strOut.append("\r\n"); i = i + 1; } // The output of the above loop is: // // name: fishing.pdf // contentType: application/pdf // size: 295680 // ---- // name: testCert.cer // contentType: application/octet-stream // size: 1674 // ---- // SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); } |
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