Question

我试图将图片发布为byte数组。我已经使用以下代码将图像转换为字节，现在我想将其发布到服务器。

WriteableBitmap btmMap = new WriteableBitmap(bi);
System.Windows.Media.Imaging.Extensions.SaveJpeg(btmMap, ms, 200, 200, 0, 100);
result = ms.ToArray();

我现在如何执行POST操作？

Answer 1

我建议将MIME multipart作为内容类型。如果你问我，它是最适合字节数组的内容类型。实现这一目标的一种方法：

$.getJSON("../JSON/list_data.json", function(info){

$(document).on("pageinit", "#mainList", function () {

    var li = "";
    $.each(data, function (i, name) {
        li += '<li><a href="#" id="' + i + '" class="info-go">' + name.name + '</a></li>';

    $("#mainList").append(li).promise().done(function () {

        $(this).on("click", ".info-go", function (e) {
            e.preventDefault();
            $("#secondaryDetails").data("info", info[this.id]);
          index.html#secondaryDetails

            $.mobile.changePage("#secondaryDetails");
        });


        $(this).listview("refresh");

});

$(document).on("pagebeforeshow", "#secondaryDetails", function () {

    var info = $(this).data("info");

    var info_view = "";

    for (var key in info) {
        info_view += '<div class="ui-grid-a"><div class="ui-block-a"><div class="ui-bar field" style="font-weight : bold; text-align: left;">' + key + '</div></div><div class="ui-block-b"><div class="ui-bar value" style="width : 75%">' + info[key] + '</div></div></div>';
    }

    $(this).find("[data-role=content]").html(info_view);
});
    });

     });
});
});

Answer 2

尝试以下代码：

HttpClient httpClient = new HttpClient();
MultipartFormDataContent form = new MultipartFormDataContent();

var imageForm = new ByteArrayContent(result, 0, result.Count());
imagenForm.Headers.ContentType = new MediaTypeHeaderValue("image/jpg");

form.Add(imagenForm, "image", "nameholder.jpg");

HttpResponseMessage response = await httpClient.PostAsync("URL_here", form);

response.EnsureSuccessStatusCode();
string result = response.Content.ReadAsStringAsync().Result;
httpClient.Dispose();

希望这有助于您了解如何将byte arry to POST传递给API调用。

修改

HttpClient httpClient = new HttpClient(); MultipartFormDataContent form = new MultipartFormDataContent(); form.Add(new StringContent(UserID), "UserID"); var imageForm = new ByteArrayContent(result, 0, result.Count()); imagenForm.Headers.ContentType = new MediaTypeHeaderValue("image/jpg"); form.Add(imagenForm, "image", "nameholder.jpg"); HttpResponseMessage response = await httpClient.PostAsync("URL_here", form); response.EnsureSuccessStatusCode(); string result = response.Content.ReadAsStringAsync().Result; httpClient.Dispose();

如何使用Windows Phone中的字节数组[]发布图像

2 个答案: