how to download txt file with using java script ajax call
Question
I want to download a text file (ex:-somthing.txt). When I use an ancor tag , the file is downloaded, but i want to download the file using an ajax call.
HTML code:
<body>
<a href="#" id="exportViewRule">Export</a>
</body>
JavaScript code :
$("#exportViewRule").click(function(){
$.ajax({
url : "/download/myDir/exportFile",
type : "GET",
contentType : "text/plain",
success : function(data){
alert(data);
}
});
});
java code:
@Path("/myDir")
public class IdnsDataHandler {
@GET
@Path("/exportFile")
@Produces("text/plain")
public Response exportFile(){
File file=new File("/home/cerdik/Desktop/some.text");
ResponseBuilder response=Response.ok((Object)file);
response.header("Content-Disposition","attachment; filename=export-file.text");
return response.build();
}
}
When i use this code bellow (without javascript), the download works.
HTML code:
<body>
<a href="./download/myDir/exportFile" id="exportViewRule">Export</a>
</body>
5 answers
solution1
1 ACCPTED 2015-08-11 06:10:25
Thanks to all, and i found another solution for this type of downloading method, now i did not use ajax call, below shows to my success code
Html:
<a id="exportView" style="cursor:pointer">Export</a>
javaScript:
$("#exportView").click(function(){
var exportId = $('#serviceRules option:selected').attr("stream");
var TakeHref="./download/myDir/exportFile"+exportId;
document.getElementById("exportView").setAttribute("href", TakeHref);
});
this code running successfully in my app, thank you all.
solution2
0 2015-08-10 08:28:39
I think you have to include the file ending to the url (eg .txt)
$.ajax({
url : "/download/myDir/exportFile.txt",
...
})
solution3
0 2015-08-10 08:33:48
The answer is: No you can't .
AJAX requests are done within a rendered page in the browser. They request the content of a file and that is stored inside the
XMLHTTPObject. The response header forcontent-typewill not make a difference and is ignored by the browser.
To be more precise :
An AJAX call is executed inside a page for which the response header is set to TEXT/HTML , that means that the content of the file is requested by AJAX. The response header will not be reset by the call and therefor will not trigger a download.
When clicking a link, the response header describing the content of the file is sent to the page by the JAVA code resulting in a response that is treated as a download by the browser.
solution4
0 2015-08-10 08:38:50
you should use ajax call and the trick is defining dataType then the response will be what the .txt file contains.
$.ajax({
url : "some-file.txt",
dataType: "text",
success : function (data) {
// set text to preferred DOM
$("THE-DOM").html(data);
}
});
solution5
0 2015-08-10 12:51:53
If you really need JS intervention to have your params changed than this code snippet should do. Not a good way to do though.
//your JS function to manipulate the url function downloadFile(){ var url = "/download/myDir/exportFile";//+your extra params $('#fake').prop({'src':url}); }
<a href="#" onclick="downloadFile()" id="exportViewRule">Export</a> <iframe name="fake" id="fake" style="display:none;"></iframe>
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