Suppose I want to create a simple counter app with three different servlets: one to read the value (GET), one to increment and one to decrement the value (both POST): readvalue.java: @WebServlet("...

<img src="images/logo.png"> I created a web project using HTML and Servlets (no JSP). When I open the HTML file directly using “Open in Browser,” the image displays correctly. But when ...

So basically I have put up my backend on Render web Service (on tomcat) and my frontend(Nextjs) is on Vercel. I have put up a Filter for Cors Policy to intercept all policies and as well as handled ...

I have a Jersey servlet project, where I organize the depencies with maven. It runs in Tomcat. Update of slf4j-api Now I am trying to use <artifactId>slf4j-api</artifactId><version>2....

I have inherited some JAX-RS code with a logout function that appears to be properly "logging out" the user by redirecting to the login page, invalidating the session, and expiring the ...

I want to be able to capture HTML content and then set a header about that content using servlet filter. I Can capture the content but I always get an error that the response has already been ...

When I tried doing research on this, everything I found was how to debug an application running under Tomcat. I'm trying to debug Tomcat itself, because something strange is happening that I can't ...

I manage a Tomcat/JSP webapp. We are updating our source code to conform to the recent javax -> jakarta namespace change in the Servlet package. The app uses the Apache Commons FileUpload package, ...

1. System Setup Framework: Spring Boot REST API (servlet-based). Global Exception Handler: Uses @RestControllerAdvice to catch MyOperationException. Returns a ResponseEntity with HTTP 400 and a ...

I have an older Java/JSP application that I have to update to Tomcat 10 by May 31, 2025. This change in Tomcat versions covers Java's recent javax -> jakarta API namespace change in the packages ...

I am working with web project using Servlet. When I am redirecting to after login.html form it is not showing .html file but .jsp with same content. Here is my code screenshot and directory structure. ...

I'm building an Expense Tracker web app using Java Servlets and MongoDB. I want to filter expense documents based on user and category (e.g., user: "chir", category: "education"). ...

Summary We're seeing an intermittent IllegalArgumentException during HTTP response serialization using Spring Boot 3.4.2 on Kubernetes. The exact same image sometimes works perfectly, and other times ...

I'm developing a Spring Boot application (with Spring Security) and need to add default headers (specifically, Content-Type and Content-Length) to requests targeting the endpoint /api/v1/mpos/set-...

I am trying to run a page using Vaadin 23, but I get index.html on any url My project uses: java version=17 spring-mvc version=5.3.20 apache tomcat version=8.5.85 But as a dependency manager on the ...