我尝试将带文件上传的输入添加到我的应用程序中。
这是我的视图,有两个输入,一个文本和一个文件:
<template>
<form class="form-horizontal" submit.delegate="doImport()">
<div class="form-group">
<label for="inputLangName" class="col-sm-2 control-label">Language key</label>
<div class="col-sm-10">
<input type="text" value.bind="languageKey" class="form-control" id="inputLangName" placeholder="Language key">
</div>
</div>
<div class="form-group">
<label for="inputFile" class="col-sm-2 control-label">Upload file</label>
<div class="col-sm-10">
<input type="file" class="form-control" id="inputFile" accept=".xlsx" files.bind="files">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default">Do import</button>
</div>
</div>
</form>
</template>
在我的webapi中,我有从here复制并粘贴的代码:
public class ImportLanguageController : ApiController
{
public async Task<HttpResponseMessage> Post()
{
// Check if the request contains multipart/form-data.
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
string root = HttpContext.Current.Server.MapPath("~/App_Data");
var provider = new MultipartFormDataStreamProvider(root);
try
{
// Read the form data.
await Request.Content.ReadAsMultipartAsync(provider);
// This illustrates how to get the file names.
foreach (MultipartFileData file in provider.FileData)
{
//Trace.WriteLine(file.Headers.ContentDisposition.FileName);
//Trace.WriteLine("Server file path: " + file.LocalFileName);
}
return Request.CreateResponse(HttpStatusCode.OK);
}
catch (System.Exception e)
{
return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e);
}
}
}
最后我在Aurelia有我的视图模型:
import {inject} from 'aurelia-framework';
import {HttpClient, json} from 'aurelia-fetch-client';
@inject(HttpClient)
export class Import {
languageKey = null;
files = null;
constructor(http){
http.configure(config => {
config
.useStandardConfiguration();
});
this.http = http;
}
doImport() {
//What goes here??
}
}
所以我的问题是,我的函数doImport
中有什么逻辑?我不确定webapi中我的控制器方法中的代码是否正确,请随时对此进行评论。
答案 0 :(得分:6)
这可以帮助您入门:
doImport() {
var form = new FormData()
form.append('language', this.languageKey)
form.append('file', this.files)
//Edit, try this if the first line dont work for you
//form.append('file', this.files[0])
this.http.fetch('YOUR_URL', {
method: 'post',
body: form
})
.then( response => {
// do whatever here
});
}
根据您提供的webapi响应(如果有),您可能需要使用以下内容:
.then( response => response.json() )
.then( response => {
// do whatever here
});
我还应该提到的一点是,fetch使用COR,所以如果你遇到任何CORS错误,你可能需要在服务器端启用它们。
这是Aurelia部分的gist.run(除非您更改URL,否则发布将无效): https://gist.run/?id=6aa96b19bb75f727271fb061a260f945