Should a servlet container create new javax.servlet.http.HttpServlet instance for each incoming request?
Date : March 29 2020, 07:55 AM
Any of those help For the general case - non-distributed, multi-threaded, it is guaranteed that there will be only one instance of the servlet. From the Servlet 3.0 specification:
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Can JavaScript send an HTTP request to web container Servlet?
Date : March 29 2020, 07:55 AM
will help you Yes, JavaScript can send POST requests to arbitrary web servers. If you have control of the servlet you can avoid all cross-site scripting restrictions by setting access-control-allow-origin properties. AJAX is a term in the web community that refers to JavaScript + HTTP requests. I recommend this AJAX tutorial from MDN. I also recommend jQuery's AJAX library. /**
* Wraps jQuery's AJAX, adds X-Domain support for IE
*/
function xDomainAJAX (url, settings) {
if ($.browser.msie && parseInt($.browser.version, 10) >= 8 && XDomainRequest) {
// use ms xdr
var xdr = new XDomainRequest();
xdr.open(settings.type, url + '?' + $.param(settings.data));
xdr.onprogress = function() {};
xdr.onload = function() {
settings.success(xdr.responseText);
};
xdr.onerror = settings.error;
xdr.send();
} else {
// use jQuery ajax
$.ajax(url, settings);
}
}
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Send a String using Java Servlet over HTTP request
Tag : java , By : Nic Doye
Date : March 29 2020, 07:55 AM
hope this fix your issue Your client should change as following. Since you are using a doPOST not doGet String URL = "http://localhost:8080/"
String serverURL = URL + "servlet?param=" + someParam;
final URL url = new URL(serverURL)
final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("POST");
final BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
System.out.println(br.readLine());
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HTTP Requests Query: Can i send a video over a HTTP request? And Send back json data and images?
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Yes you can send video file to web-server and get response via JSON with images. For sending video you can HTTP client retrofit which is very handy. You must use @Multipart in your API calling. Here is an example. @POST("/your_url/")
Call<ResultObject> uploadVideoToServer(@Part MultipartBody.Part video);
File videoFile = new File(pathToVideoFile);
RequestBody videoBody = RequestBody.create(MediaType.parse("video/*"), videoFile);
MultipartBody.Part vFile = MultipartBody.Part.createFormData("video", videoFile.getName(), videoBody);
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how to send HTTP request to a servlet
Tag : java , By : user158193
Date : March 29 2020, 07:55 AM
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