[英]415 (Unsupported Media Type) Error
在我的MVC項目中,我使用XmlHttpRequest
向Web API發送了POST請求。
我以JSON格式發送文檔的路由數組,並期望從服務器獲取一個Zip文件(ArrayBuffer)。
self.zipDocs = function (docs, callback) {
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {//Call a function when the state changes.
if (xhr.readyState == 4 && xhr.status == 200) {
alert(xhr.responseBody);
}
}
xhr.open("POST", '../API/documents/zip', true);
xhr.setRequestHeader("Content-type", "application/json");
xhr.responseType = "arraybuffer";
console.log(docs);
xhr.send(docs);
var arraybuffer = xhr.response;
var blob = new Blob([arraybuffer], { type: "application/zip" });
saveAs(blob, "example.zip");
}
還有我在WebAPI上的ZipDocs函數(使用DotNetZip庫):
[HttpPost]
[Route("documents/zip")]
public HttpResponseMessage ZipDocs([FromBody] string[] docs)
{
using (var zipFile = new ZipFile())
{
zipFile.AddFiles(docs, false, "");
return ZipContentResult(zipFile);
}
}
protected HttpResponseMessage ZipContentResult(ZipFile zipFile)
{
// inspired from http://stackoverflow.com/a/16171977/92756
var pushStreamContent = new PushStreamContent((stream, content, context) =>
{
zipFile.Save(stream);
stream.Close(); // After save we close the stream to signal that we are done writing.
}, "application/zip");
return new HttpResponseMessage(HttpStatusCode.OK) { Content = pushStreamContent };
}
但是我從服務器得到的響應是:
POST http://localhost:1234/MyProject/API/documents/zip 415 (Unsupported Media Type)
為什么會發生這種情況,我該如何解決?
根據這篇文章
您可能要嘗試
xhr.setRequestHeader("Accept", "application/json");
而且您的代碼缺少分號
xhr.setRequestHeader("Content-type", "application/json")
感謝@David Duponchel,我使用了jquery.binarytransport.js庫,將數據以JSON的形式發送到API,並以Zinary的形式返回了Zip文件。
這是我的JavaScript ZipDocs函數:
self.zipDocs = function (docs, callback) {
$.ajax({
url: "../API/documents/zip",
type: "POST",
contentType: "application/json",
dataType: "binary",
data: docs,
processData: false,
success: function (blob) {
saveAs(blob, "ZippedDocuments.zip");
callback("Success");
},
error: function (data) {
callback("Error");
}
});
}
API的代碼保持不變。
那很好。
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