![]() ![]() This method is called only once in the servlet’s life. It’s common to place initialization code here. init(): the servlet container will invoke this method when the servlet is first accessed by the client.Public class QuickServlet extends HttpServlet This servlet overrides four methods from the HttpServlet class: Coding the Java Servlet classCreate a Java source file called QuickServlet.java under the directory src\net\codejava\servlet with the following code: package WebContent\WEB-INF\classes: we will put compiled classes here.aģ.WebContent\WEB-INF : we will put web deployment descriptor file ( web.xml ) here.WebContent: contains JSP pages and other web resources.src: contains Java source files in the package. ![]() deploy: we will put generated war file here.To get started, create the following directory structure: The servlet receives user’s inputs, processes it and sends response back.The JSP presents a form to user for inputting data.The servlet container supplies an HttpServletRequest object and an HttpServletResponse object for dealing with the request and response.Servlet is usually used in conjunction with JSP for generating dynamic content based on client’s requests. In practice, servlet is mostly used for handling HTTP requests, by overriding the HttpServlet’s doGet(), doPost() methods to handle GET and POST requests, respectively. class for generic client-server protocol, or:.The most popular and widely used servlet containers are Apache Tomcat, Glassfish, JBoss, etc.Technically, a servlet is a normal Java class that extends either: A web server that can run Java servlet is called a servlet container. A Java EE application can be packaged in a WAR file ( Web ARchive) in order to be deployed on a web server. A brief overview of Java servletA servlet is a server-side component written in Java programming language that receives requests from client and sends responses back.Servlet is the key component that forms a typical Java EE application, beside JSP, EJB, XML and other related technologies. Assuming you have the following pieces of software installed on your computer (of course you can use newer versions):Īnd a simple text editor such as JEdit or Notepad++. This tutorial is designed for those who are new to Java servlet and wish to learn Java servlet quickly by following a hands-on exercise without using an IDE. Declaring and configuring mapping for the servlet in web.xml. ![]()
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