Java Server Pages

java server pages

Introduction to JSP

It increases productivity by enabling developers to quickly add Java code to HTML or XML sites.  of web development.

java server pages

What benefits does JSP offer over Servlets?

1. JSP makes web development easier by fusing HTML’s adaptability with Java’s advantages.The following are some benefits of JSP over Servlets:
2. Because JSP code separates the user interface (UI) from business logic, it is simpler to manage than Servlets.
3. The amount of code needed for web applications is reduced with JSP.
4. It offers access to the full suite of Java APIs for reliable application development.
5. Applications with expanding user bases can benefit from JSP.

java server pages

Important JSP Features

• Database interactions for dynamic content are made simpler by it.

By using pre-made objects like request, response, session, and application, it cuts down on development time.

1. It has built-in features for handling mistakes and exceptions. There is support for custom tags and tag libraries.
2. The JSP Architecture
3. The JSP architecture is composed on three layers

Database/Backend Layer: Communicates with the database to provide the client with the response.

Differences Between JSP and Servlets

How to Make an Application in JSP

JSP simplifies the production of dynamic content by enabling us to integrate Java code inside HTML pages. First, let’s do a quick experiment that will turn an existing HTML file into a JSP file.

How to Make a JSP

1. Take any HTML file that you have already made.
2. Replace the .html file extension with.jsp.

A Java file is created from JSP.

A servlet is created by compiling a Java file.

The compiled servlet loads and runs.

• JSP Components
• Several JSP components will be covered, along with pertinent examples.
• Scriplets of Expression, Directives, and Declarations

Why Make Use of JSP?

JSP’s strength lies on its ability to

1. Integrate HTML with Java logic directly.
2. to produce dynamic webpages that react to user input.
3. to alter content according to each user or session.

JSP Architecture

The JSP architecture provides a high-level overview of how JSP operates.  Three tiers make up the JSP architecture.The Web Server uses a JSP Engine, or a container that processes JSP. For example, Apache Tomcat incorporates the JSP Engine.

The JSP Engine provides the runtime environment needed to understand and process JSP files by intercepting the the request for JSP. The HTML page is sent back to the client after it has been read, parsed, built a Java Servlet, compiled, and executed Java code.

Let’s now talk about Java Server Pages, or JSP.The server side is where this technology functions. Web apps are made with it. It is employed in the production of dynamic online content.This entails utilizing JSP elements to insert Java code into HTML pages.

It is a more sophisticated form of servlet technology. This Web-based technology facilitates the creation of dynamic, platform-neutral webpages. HTML, XML, or both pages can have Java code added to them.

The steps involved in processing JSP are explained and shown in sequential order, before a few examples of visual media are presented to help better comprehend the process.

Step 1: JSP For instance, the user clicks “Submit” after entering their login information.After that, the browser requests a status.jsp page from the web server.

Step 2: If not, the request is sent to the JSP Engine. Finding the URL that ends in.jsp is how this is done.

Step 3: The JSP file is loaded and transformed into Java code or Servlets by the JSP Engine. This is accomplished by turning the template text into Java code and JSP elements into println() commands. Translation is the term for this process.

Life Cycle of JSP

The initial phase of a JavaServer Page’s (JSP) life cycle is its building.The JSP engine manages this procedure automatically.

JSP Life Cycle Steps: Converting JSP pages to Servlets and Compiling JSP pages (JSP into test.java)

Test.java to test.class classloading

1. Initialization (creation of the produced Servlet’s object)
2. Initialization (the container calls the jspInit() function)
3. Request processing (the container calls _jspService())