如何在asp.net MVC中处理和压缩GZipped表单?

I have an iPad app that submits orders to an ASP.NET MVC web site via form post. It is posting JSON which can be fairly large for a mobile device to send (200~300K) under certain conditions. I can GZip the form post but then my asp.net mvc chokes on the gzipped content.

我有一个iPad应用程序可以向ASP提交订单。NET MVC网站通过表单发布。它发布的JSON对于移动设备在一定条件下发送(200~300K)是相当大的。我可以GZip表单的帖子，但是我的asp.net mvc会阻塞gziked内容。

How can I handle a GZipped form post in asp.net mvc?

如何在asp.net mvc中处理GZipped表单?

UPDATE:

更新:

Darin's answer puts me on the right track but I still have no idea how to do what he suggests, so here is where I am at:

达林的回答让我走上了正确的道路，但我仍然不知道如何去做他的建议，所以我在这里:

Have this code to decompress a string:

使用以下代码解压缩字符串:

http://dotnet-snippets.com/dns/compress-and-decompress-strings-SID612.aspx

And I get the string like so:

我得到的弦是这样的:

StreamReader reader = new StreamReader(Request.InputStream);
string encodedString = reader.ReadToEnd();

but this gives me the error:

但这给了我一个错误:

The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters.

EDIT - COMPLETED CODE

编辑完成的代码

I am using asp.net MVC and this is working great for me. I also had to deal with some other encoding that happens when my gzipping occurs:

我正在使用asp.net MVC，这对我来说非常有用。我还必须处理gzipping时发生的其他编码:

[Authorize]
[HttpPost]
[ValidateInput(false)]
public ActionResult SubmitOrder()
        {

            GZipStream zipStream = new GZipStream(Request.InputStream, CompressionMode.Decompress);
            byte[] streamBytes = ReadAllBytes(zipStream);
            var result = Convert.ToBase64String(streamBytes);
            string sample = System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(result));
            string escaped = Uri.UnescapeDataString(sample);

 // escaped now has my form values as a string like so: var1=value1&var2=value2&ect...

//more boring code

}



 public static byte[] ReadAllBytes(Stream input)
        {
            byte[] buffer = new byte[16 * 1024];
            using (MemoryStream ms = new MemoryStream())
            {
                int read;
                while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
                {
                    ms.Write(buffer, 0, read);
                }
                return ms.ToArray();
            }
        }

3 个解决方案

#1

You can do this without a custom model binder. Write an Action that accepts HttpPostedFileBase, i.e, treat this as a file upload.

您可以在没有自定义模型绑定器的情况下这样做。编写一个接受HttpPostedFileBase (i)的操作。e，把它当作文件上传。

    [HttpPost]
    public ActionResult UploadCompressedJSON(HttpPostedFileBase file)
    {
        if (file != null && file.ContentLength > 0)
        {
            GZipStream zipStream = new GZipStream(file.InputStream, CompressionMode.Decompress);
            byte[] streamBytes = ReadAllBytes(zipStream);
            var result = Convert.ToBase64String(streamBytes);
        }
        return RedirectToAction("Index");
    }

You are going to need to change your client side code to send a file upload request but that should be fairly easy. For example you can look at this code.

您将需要更改客户端代码以发送文件上传请求，但这应该相当容易。例如，您可以查看此代码。

#2

How can I handle a GZipped form post in asp.net mvc?

如何在asp.net mvc中处理GZipped表单?

You could write a custom model binder that will directly read the Request.InputStream, unzip it and then parse the contents and instantiate some view model you want to bind to.

您可以编写一个可以直接读取请求的自定义模型绑定器。InputStream，解压它，然后解析内容并实例化您想要绑定到的某个视图模型。

#3

Use the System.IO.Compression.GZipStream class.

使用System.IO.Compression。GZipStream类。

Codeproject example

Codeproject上的例子

#1