jsp html difference

JSP is the abbreviation of Java Server Pages, which is a dynamic page technology used for Web development. HTML is the abbreviation of Hyper Text Markup Language, which is a markup language used to create web pages. Although both can be used to create web pages, they are very different in terms of syntax rules and usage methods.

The following is a detailed introduction to the difference between JSP and HTML.

1. Grammar

The syntax of HTML is relatively simple and mainly consists of tags, attributes and tag content. Tags are enclosed by "<" and ">", attributes are placed in the tag and connected with "=", and the tag content is ended with ">" and "/". For example, "".

The syntax of JSP is more complicated than HTML. It requires the use of Java syntax and JSP tags. JSP tags have a fixed syntax format, generally enclosed by "<%" and "%>". For example, to output a sentence in a JSP page, you can use the following tag:

<%

%>

2. DYNAMIC

HTML is a static page language. Its page structure and content are fixed and will not change due to different users. JSP uses Java language, and dynamic page display can be realized by writing Java programs.

For example, we can write Java code in the JSP page to obtain the data in the database and display it on the page to achieve dynamic updates.

3. Deployment method

HTML pages are generally static, and you only need to place the HTML file in the directory of the web server. The JSP page needs to be compiled into a Java file and deployed to the Web server before it can be accessed.

4. Processing method

HTML pages are rendered directly by the browser and do not need to be processed by the server. The JSP page needs to be interpreted and compiled by the server, then rendered into a static page, and then returned to the browser for display.

5. Function Extension

Since JSP is based on Java, it can be developed using various functions of the Java language, such as using JavaBean, JDBC to connect to the database, etc. HTML is just a static page language used to display content and cannot be expanded.

To sum up, JSP and HTML are quite different in terms of syntax, dynamics, deployment methods, processing methods and function extensions. Developers should choose which technology to use based on actual needs.

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