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我正在使用 vs2017 开发 Outlook javascript 插件。我创建了一个示例应用程序来从 Outlook 邮件项中查找附件。在这里，从 Exchange Server 获取附件时，它返回 200 OK。

我有自己的云应用程序，看起来像谷歌驱动器。我想使用 POST API 调用在我的云服务器上上传 Outlook 邮件附件。API 调用已成功运行。但我无法从交换服务器获取文件内容。

我在这里添加了一些示例代码。

  • 创建服务请求

            /// <reference path="../App.js" />
    var xhr;
    var serviceRequest;

    (function () {
        "use strict";

        // The Office initialize function must be run each time a new page is loaded
        Office.initialize = function (reason) {
            $(document).ready(function () {
                app.initialize();

                initApp();
            });
        };

        function initApp() {
            $("#footer").hide();

            if (Office.context.mailbox.item.attachments == undefined) {
                var testButton = document.getElementById("testButton");
                testButton.onclick = "";
                showToast("Not supported", "Attachments are not supported by your Exchange server.");
            } else if (Office.context.mailbox.item.attachments.length == 0) {
                var testButton = document.getElementById("testButton");
                testButton.onclick = "";
                showToast("No attachments", "There are no attachments on this item.");
            } else {

                // Initalize a context object for the app.
                //   Set the fields that are used on the request
                //   object to default values.
                serviceRequest = new Object();
                serviceRequest.attachmentToken = "";
                serviceRequest.ewsUrl = Office.context.mailbox.ewsUrl;
                serviceRequest.attachments = new Array();
            }
        };

    })();

    function testAttachments() {
        Office.context.mailbox.getCallbackTokenAsync(attachmentTokenCallback);
    };

    function attachmentTokenCallback(asyncResult, userContext) {
        if (asyncResult.status == "succeeded") {
            serviceRequest.attachmentToken = asyncResult.value;
            makeServiceRequest();
        }
        else {
            showToast("Error", "Could not get callback token: " + asyncResult.error.message);
        }
    }

    function makeServiceRequest() {
        var attachment;
        xhr = new XMLHttpRequest();
        // Update the URL to point to your service location.
        xhr.open("POST", "https://localhost:8080/GetOutlookAttachments/AttachmentExampleService/api/AttachmentService", true);

        xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8");
        xhr.onreadystatechange = requestReadyStateChange;

        // Translate the attachment details into a form easily understood by WCF.
        for (i = 0; i < Office.context.mailbox.item.attachments.length; i++) {
            attachment = Office.context.mailbox.item.attachments[i];
            attachment = attachment._data$p$0 || attachment.$0_0;

            if (attachment !== undefined) {
                serviceRequest.attachments[i] = JSON.parse(JSON.stringify(attachment));
            }
        }

        // Send the request. The response is handled in the 
        // requestReadyStateChange function.
        xhr.send(JSON.stringify(serviceRequest));
    };


    // Handles the response from the JSON web service.
    function requestReadyStateChange() {
        if (xhr.readyState == 4) {
            if (xhr.status == 200) {
                var response = JSON.parse(xhr.responseText);
                if (!response.isError) {
                    // The response indicates that the server recognized
                    // the client identity and processed the request.
                    // Show the response.
                    var names = "<h2>Attachments processed: " + response.attachmentsProcessed + "</h2>";
                    document.getElementById("names").innerHTML = names;
                } else {
                    showToast("Runtime error", response.message);
                }
            } else {
                if (xhr.status == 404) {
                    showToast("Service not found", "The app server could not be found.");
                } else {
                    showToast("Unknown error", "There was an unexpected error: " + xhr.status + " -- " + xhr.statusText);
                }
            }
        }
    };

    // Shows the service response.
    function showResponse(response) {
        showToast("Service Response", "Attachments processed: " + response.attachmentsProcessed);
    }

    // Displays a message for 10 seconds.
    function showToast(title, message) {

        var notice = document.getElementById("notice");
        var output = document.getElementById('output');

        notice.innerHTML = title;
        output.innerHTML = message;

        $("#footer").show("slow");

        window.setTimeout(function () { $("#footer").hide("slow") }, 10000);
    };

请帮助我从 Outlook 邮件中获取附件并上传到我的云服务器上。

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1 回答 1

0

attachment._data$p$0 提供附件元数据。从那里获取 id 并使用 getAttachmentContentAsync API 获取附件内容文档

于 2019-08-13T08:45:46.623 回答