Difference Between Cgi And Servlet In Java Pdf

difference between cgi and servlet in java pdf

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Common Gateway Interface

In computing , Common Gateway Interface CGI is an interface specification that enables web servers to execute an external program, typically to process user requests. Such programs are often written in a scripting language and are commonly referred to as CGI scripts , but they may include compiled programs. The Web server then launches the CGI script in a new computer process , passing the form data to it. The output of the CGI script, usually in the form of HTML , is returned by the script to the Web server, and the server relays it back to the browser as its response to the browser's request. Developed in the early s, CGI was the earliest common method available that allowed a Web page to be interactive.

The Portable Document Format PDF is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Servlet technology is used to create a web application resides at server side and generates a dynamic web page.. Servlet technology is robust and scalable because of java language. Authoring tool developers that want to support Web applications that conform to this specification Experienced servlet authors who want to understand the underlying mechanisms of servlet technology. When a server answers a request, it usually sends some type of content to the client.

Difference Between CGI and Servlet

A servlet is a Java technology that is managed by a container called a servlet engine. It generates dynamic content and interacts with the client through Request and Response. Servlet extends the functionality of a web server. Though servlets can respond to many types of requests, they generally implement web containers for hosting any website on web server. Therefore, it is qualified as a server-side servlet web API. In this Servlet Vs.

It allows a web client to pass data to the application running on the web server so that a dynamic web page can be returned to the client according to the input data. For example, when you use a search engine, buy a book at an online store; get a stock quote etc. CGI is not a programming language, rather it is an interface or a set of rules that allows an input from a web browser and produce an output in the form of HTML page. Out of these, Perl is most commonly used. When a web server receives a request for a CGI script, the web server passes some parameters to this script and executes it. The script runs and generates some output which is then collected by the web server and returned to the client browser.

Servlets. We will discuss the advantages and drawbacks of Java Servlets For the client it makes no difference whether the form uses a servlet or a CGI script.

Top 55 Servlets Interview Question You Need to Know

Prerequisite: Servlets and Applets. Attention reader! Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready.

Servlet vs JSP: What's the Difference?

Servlet technology is used to create a web application resides at server side and generates a dynamic web page. Servlet technology is robust and scalable because of java language.

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Joy A.


The World Wide Web has experienced phenomenal growth over the past few years, placing heavy load on Web servers.



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Daila B.


A Jakarta Servlet formerly Java Servlet is a Java software component that extends the capabilities of a server.