Question

我正在尝试提交包含vibe.d图像的多部分表单

我的代码如下：

    auto f = File("image.jpg");
    auto data = new char[f.size];
    f.rawRead(data);

    string boundary = randomUUID.toString.toUpper();

    string h = "--Boundary-" ~ boundary ~ "\r\n";
    h ~= `Content-Disposition: form-data; name="type"` ~ "\r\n\r\n";
    h ~= "photo\r\n";
    h ~= "--Boundary-" ~ boundary ~ "\r\n";
    h ~= `Content-Disposition: form-data; name="photo"; filename="558704D0-2855-4689-996C-F556BE4A3872.jpg"` ~ "\r\n";
    h ~= "Content-Type: image/jpeg\r\n\r\n";
    h ~= data ~ "\r\n";
    h ~= "--Boundary-" ~ boundary ~ "\r\n";
    h ~= `Content-Disposition: form-data; name="photo_ids"` ~ "\r\n\r\n";
    h ~= `["55227F15-36D2-4A04-A4D9-FB23C00627D1"]` ~ "\r\n";
    h ~= "--Boundary-" ~ boundary ~ "\r\n";


    auto response = requestHTTP("https://httpbin.org/anything", (scope req) {
        req.method = HTTPMethod.POST;
        req.headers["content-type"] = "multipart/form-data; boundary=Boundary-" ~ boundary;
        req.headers["content-length"] = to!string(h.length);

        req.bodyWriter.write(h);
    }).bodyReader.readAllUTF8();

    logInfo(response);

但是httpbin告诉我我什么也没张贴：

[main(----) INF] {
[main(----) INF]   "args": {},
[main(----) INF]   "data": "",
[main(----) INF]   "files": {},
[main(----) INF]   "form": {},
[main(----) INF]   "headers": {
[main(----) INF]     "Accept-Encoding": "gzip, deflate",
[main(----) INF]     "Content-Length": "58038",
[main(----) INF]     "Content-Type": "multipart/form-data; boundary=Boundary-76CCC942-83EB-4339-BB6B-2C7D5BF027B6",
[main(----) INF]     "Host": "httpbin.org",
[main(----) INF]     "User-Agent": "vibe.d/1.7.0 (HTTPClient, +http://vibed.org/)"
[main(----) INF]   },
[main(----) INF]   "json": null,
[main(----) INF]   "method": "POST",
[main(----) INF]   "origin": "",
[main(----) INF]   "url": "https://httpbin.org/anything"
[main(----) INF] }

我不知道我在做什么错。不胜感激

Answer 1

现在使用当前版本的 Vibe.d 变得更加简单。

确保在表单的 enctype 中声明“multipart/form-data”：

form.form-grid(method="post", action="new_employee", enctype="multipart/form-data")

然后该表单中的字段应包含一个“文件”类型的输入字段，如下所示：

input(type="file", name="picture")

在你的 web 框架类的 postNewEmployee() 方法中，通过 request.files 获取文件：

auto pic = "picture" in request.files;

这是一个示例 postNewEmployee() 方法，它被传递给一个 Employee 结构：

void postNewEmployee(string _authUser, Employee e)
{
    import std.file;
    import std.path;
    import std.algorithm;
    string photopath = "No photo submitted";
    auto pic = "picture" in request.files;
    if(pic !is null) 
    {
        string ext = extension(pic.filename.name);
        string[] exts = [".jpg", ".jpeg", ".png", ".gif"];
        if(canFind(exts, ext))
        {
            photopath = "uploads/photos/" ~ e.fname ~ "_" ~ e.lname ~ ext;
            string dir = "./public/uploads/photos/";
            mkdirRecurse(dir);
            string fullpath = dir ~ e.fname ~ "_" ~ e.lname ~ ext;
            try moveFile(pic.tempPath, NativePath(fullpath));
            catch (Exception ex) copyFile(pic.tempPath, NativePath(fullpath));
        }
    }
    e.photo = photopath;
    if(e.phone.length == 0) e.phone = "(123) 456 7890";
    if(e.paygd.length == 0) e.paygd = "none yet";
    if(e.postcode.length == 0) e.postcode = "A1A 1A1";
    e.pword = createDigestPassword(realm, e.email, e.pword);
    empModel.addEmployee(e);
    redirect("list_employees");
}

当我再次尝试学习 Vibe.d 时，我再次意识到教程的缺乏，所以我自己写了一个教程，作为学习者，一切都很新鲜：

https://github.com/reyvaleza/vibed

希望你觉得这有用。

Answer 2

您的多部分数据格式不正确。对于最后一个边界，您必须附加一个“-”字符串以指示结尾。因此，不是最后一个

file://

它必须是

h ~= "--Boundary-" ~ boundary ~ "\r\n";

然后它将起作用。

请参见https://www.freesoft.org/CIE/RFC/1521/16.htm

最终，应该在vibe.d中将其作为API进行支持，并且为此有2个打开的PR，但是现在您必须像以前那样解决它。

使用vibe.d的多部分表单数据

2 个答案: