C'est ainsi que je résous ce problème.
La réponse de Jonathan Amend sur ce post m'a beaucoup aidé.
L'exemple ci-dessous est simplifié.
Pour plus de détails, le code source ci-dessus est capable de télécharger un fichier à l'aide d'une requête JQuery Ajax (GET, POST, PUT, etc.) . Cela permet également de télécharger des paramètres au format JSON et de changer le type de contenu en application / json (par défaut) .
La source html :
<form method="POST">
<input type="text" name="startDate"/>
<input type="text" name="endDate"/>
<input type="text" name="startDate"/>
<select name="reportTimeDetail">
<option value="1">1</option>
</select>
<button type="submit"> Submit</button>
</form>
Un formulaire simple avec deux entrées de texte, une sélection et un élément bouton.
La source de la page javascript :
<script type="text/javascript" src="JQuery 1.11.0 link"></script>
<script type="text/javascript">
// File Download on form submition.
$(document).on("ready", function(){
$("form button").on("click", function (event) {
event.stopPropagation(); // Do not propagate the event.
// Create an object that will manage to download the file.
new AjaxDownloadFile({
url: "url that returns a file",
data: JSON.stringify($("form").serializeObject())
});
return false; // Do not submit the form.
});
});
</script>
Un simple événement sur clic de bouton. Il crée un objet AjaxDownloadFile. La source de la classe AjaxDownloadFile est ci-dessous.
La source de la classe AjaxDownloadFile :
var AjaxDownloadFile = function (configurationSettings) {
// Standard settings.
this.settings = {
// JQuery AJAX default attributes.
url: "",
type: "POST",
headers: {
"Content-Type": "application/json; charset=UTF-8"
},
data: {},
// Custom events.
onSuccessStart: function (response, status, xhr, self) {
},
onSuccessFinish: function (response, status, xhr, self, filename) {
},
onErrorOccured: function (response, status, xhr, self) {
}
};
this.download = function () {
var self = this;
$.ajax({
type: this.settings.type,
url: this.settings.url,
headers: this.settings.headers,
data: this.settings.data,
success: function (response, status, xhr) {
// Start custom event.
self.settings.onSuccessStart(response, status, xhr, self);
// Check if a filename is existing on the response headers.
var filename = "";
var disposition = xhr.getResponseHeader("Content-Disposition");
if (disposition && disposition.indexOf("attachment") !== -1) {
var filenameRegex = /filename[^;=\n]*=(([""]).*?\2|[^;\n]*)/;
var matches = filenameRegex.exec(disposition);
if (matches != null && matches[1])
filename = matches[1].replace(/[""]/g, "");
}
var type = xhr.getResponseHeader("Content-Type");
var blob = new Blob([response], {type: type});
if (typeof window.navigator.msSaveBlob !== "undefined") {
// IE workaround for "HTML7007: One or more blob URLs were revoked by closing the blob for which they were created. These URLs will no longer resolve as the data backing the URL has been freed.
window.navigator.msSaveBlob(blob, filename);
} else {
var URL = window.URL || window.webkitURL;
var downloadUrl = URL.createObjectURL(blob);
if (filename) {
// Use HTML5 a[download] attribute to specify filename.
var a = document.createElement("a");
// Safari doesn"t support this yet.
if (typeof a.download === "undefined") {
window.location = downloadUrl;
} else {
a.href = downloadUrl;
a.download = filename;
document.body.appendChild(a);
a.click();
}
} else {
window.location = downloadUrl;
}
setTimeout(function () {
URL.revokeObjectURL(downloadUrl);
}, 100); // Cleanup
}
// Final custom event.
self.settings.onSuccessFinish(response, status, xhr, self, filename);
},
error: function (response, status, xhr) {
// Custom event to handle the error.
self.settings.onErrorOccured(response, status, xhr, self);
}
});
};
// Constructor.
{
// Merge settings.
$.extend(this.settings, configurationSettings);
// Make the request.
this.download();
}
};
J'ai créé cette classe pour l'ajouter à ma bibliothèque JS. Il est réutilisable. J'espère que cela pourra aider.