My error shows up in the console of my browser:   "WebSocket connection to 'ws://localhost:32768/DspClusterWebServices/myHandler' failed: Unexpected response code: 200"  I am using Spring Websockets 4.1.5 and Tomcat 8.0.18. My WebSock...
I'm working on a web app for my Masters project. It's a system for professors to manage student projects, and it uses Java for the server-side code, HSQLDB for the database, and JSPs for the presentation layer, and it runs on tomcat. The data...
I have a spring MVC API backend with CORS configured correctly when i try to make the ajax call i get the following error in chrome     XMLHttpRequest cannot load 172.20.16.45:8082/cuponza. The request was redirected to '172.20.16.45:8082/cuponza...
I'm trying to send plain text error messages from a tomcat servlet, so that the responses may be presented to the user by the application.  I have the following in my web.xml:  <error-page>     <error-code>409</error-code>     &...
I'm writing a CouchDB sample. My intention is to write a web app using AJAX and deploy it in the tomcat environment. As I use the CouchDB I would like to know the way to interact with the CouchDB server. However there were few examples but I have...
I have a .jsp file with JavaScript.   If I click to the OK button, I call a JavaScript method. This method detects an id.   I want to send this id to my servlet. In my servlet I want to get the id with getParameter(id).  I have implemented this on my...
I have a very simple webapp where I am trying to plot graphs using flot javascript library. My JSP file goes this way where I am importing the required *.js files as follows.   Relative to the hello.jsp file at WEB-INF/pages/hello.jsp, scripts direct...
I have developed a plain native websocket + tomcat 8 websocket sample appliation works fine.  But when I use the sockjs.js , instead of native websocket , I genting 404 error .  I am getting error in my browser console as   GET http://localhost:8082/...
I tried to access my web application via HTTPS. It fails to load JavaScript files and shows "Failed to load resource: net::ERR_CONNECTION_TIMED_OUT". But it is working as expected in IE and Firefox. It is also working fine in Chrome via HTTP....
i am developing a web application with angular 4 and java. I am using server sent events to send some text data to the frontend. In the backend i am using jersey and this is my backend code  eventOutput.write(new OutboundEvent.Builder()        .id(de...

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