Day-1. Servlet Intro , Tomcat server , First servlet program
Day-1. Servlet Intro , Tomcat server , First servlet program #corejava #servlets #jsp #apache
Servlet Intro.
Servlets are Java-based components that extend the functionality of web servers. They provide a way to generate dynamic content on the web and handle client requests. Servlets are part of the Java Platform, Enterprise Edition (Java EE), and they work on the server side to process requests sent by clients, such as web browsers.
Here's a basic rundown of how servlets work:
Request Handling: When a client (like a web browser) sends a request to the server, the servlet container receives the request.
Servlet Invocation: The servlet container determines which servlet should handle the request based on the URL, and it invokes the servlet.
Processing: The servlet processes the request, which may involve interacting with databases, performing calculations, or any other server-side operation.
Response Generation: After processing, the servlet generates a response dynamically. This response is typically in the form of HTML, but it can be other formats like XML or JSON.
Response Sent to Client: The generated response is sent back to the client, which could be a web browser or another application.
Servlets are often used to build dynamic web applications. They can interact with databases, manage sessions, handle user authentication, and more. Servlets are part of the broader Java EE ecosystem, and they work closely with technologies like JavaServer Pages (JSP) for creating dynamic web content.
Their architecture is based on the Java Servlet API, which defines the classes and methods that servlets can use. The Java EE platform provides a runtime environment for deploying and running servlets, and various web servers, like Apache Tomcat, are commonly used for hosting servlets.