带有额外参数的Webapi ajax表单数据上传 [英] Webapi ajax formdata upload with extra parameters
问题描述
我使用 jQuery ajax 上传文件,但想在 webapi 方法上添加一些参数,这里是:
var data = new FormData();data.append("file", $("#file")[0].files[0]);data.append("myParameter", "test");//有了这个参数,我得到 404$.ajax({url: '/api/my/upload/',数据:数据,缓存:假,内容类型:假,过程数据:假,类型:'POST',成功:功能(数据){控制台日志(数据);}});
Webapi 控制器:
公共类 MyController : ApiController{公共字符串上传(字符串 myParameter){返回 System.Web.HttpContext.Current.Request.Files.Count.ToString() + "/" + myParameter;}}
没有 myParameter 一切正常,但是当我在 formdata 和 api 方法中包含 myParameter 时,我得到 404,有机会让它工作吗?
发布 FormData
对象会导致内容类型为 multipart/form-data 的请求.您必须像这样阅读请求内容:
[HttpPost]公共异步任务上传(){var provider = new MultipartFormDataStreamProvider("C:\Somefolder");等待 Request.Content.ReadAsMultipartAsync(provider);var myParameter = provider.FormData.GetValues("myParameter").FirstOrDefault();var count = provider.FileData.Count;返回计数 + "/" + myParameter;}
顺便说一句,这会将文件保存在指定的路径中,即 C:\SomeFolder
,您可以使用 provider.FileData[0].LocalFileName; 获取本地文件名;
请查看MSDN 代码示例和Henrik 的博客文章.>
I'm using jQuery ajax to upload file but want to add some parameters on webapi method, here is:
var data = new FormData();
data.append("file", $("#file")[0].files[0]);
data.append("myParameter", "test"); // with this param i get 404
$.ajax({
url: '/api/my/upload/',
data: data,
cache: false,
contentType: false,
processData: false,
type: 'POST',
success: function (data) {
console.log(data);
}
});
The Webapi controller:
public class MyController : ApiController
{
public string Upload(string myParameter)
{
return System.Web.HttpContext.Current.Request.Files.Count.ToString() + " / " + myParameter;
}
}
Without myParameter everything work but when I include myParameter on formdata and api method I get 404, any chance to make it work?
Posting the FormData
object results in a request with content type multipart/form-data. You have to read the request content like so:
[HttpPost]
public async Task<string> Upload()
{
var provider = new MultipartFormDataStreamProvider("C:\Somefolder");
await Request.Content.ReadAsMultipartAsync(provider);
var myParameter = provider.FormData.GetValues("myParameter").FirstOrDefault();
var count = provider.FileData.Count;
return count + " / " + myParameter;
}
BTW, this will save the file in the path specified, which is C:\SomeFolder
and you can get the local file name using provider.FileData[0].LocalFileName;
Please take a look at MSDN code sample and Henrik's blog entry.
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