How to quickly generate JSP files
How to quickly create JSP files
JSP (JavaServer Pages) is a Java-based server-side scripting technology used to create dynamic Web page. JSP files have a .jsp extension and can contain HTML, XML, Java code and JSP tags.
How to create a JSP file
- Use a text editor to create a new text file.
- Add the following code at the beginning of the text file:
<%@ page language="java" contentType="text/html" pageEncoding="UTF-8" %>
- Add the following code in the middle of the text file:
<html> <head> <title>Hello JSP</title> </head> <body> <h1 id="Hello-JSP">Hello JSP</h1> </body> </html>
- Save the text file as a .jsp file.
- Upload the .jsp file to the web server.
- Enter the URL of the .jsp file in the browser.
Example
The following is an example of creating a JSP file:
- Use a text editor to create a new text file.
- Add the following code at the beginning of the text file:
<%@ page language="java" contentType="text/html" pageEncoding="UTF-8" %>
- Add the following code in the middle of the text file:
<html> <head> <title>Hello JSP</title> </head> <body> <h1 id="Hello-JSP">Hello JSP</h1> </body> </html>
- Save the text file as hello.jsp.
- Upload the hello.jsp file to the web server.
- Enter http://localhost:8080/hello.jsp in the browser.
JSP tag
JSP tag is used to insert dynamic content in JSP files. JSP tags start with and end with <code>%>.
The following are some commonly used JSP tags:
-
: used to set the language, content type and page of the JSP file coding. -
: used to include another JSP file. -
: used to import a JSP tag library. -
: used to execute Java code. -
: Used to output the value of a Java expression or variable. -
<usebean></usebean>: Used to create or find a JavaBean. -
<setproperty></setproperty>: Used to set the properties of JavaBean. -
<getproperty></getproperty>: Used to obtain the properties of JavaBean. -
<forward></forward>: Used to forward the request to another JSP file. -
<include></include>: Used to include the content of another JSP file into the current JSP file.
The structure of JSP application
JSP application usually consists of the following parts:
- JSP file: For creating dynamic web pages.
- JavaBean: used to encapsulate data and business logic.
- Servlet: used to process requests and responses.
- JSP tag library: used to provide customized JSP tags.
JSP application development tools
The following are some commonly used JSP application development tools:
- Eclipse
- IntelliJ IDEA
- NetBeans
- JDeveloper
Deployment of JSP applications
JSP applications can Deploy to the following types of web servers:
- Apache Tomcat
- Jetty
- GlassFish
- WildFly
Security of JSP applications
The security of JSP applications mainly includes the following aspects:
- Authentication: used to verify the identity of the user .
- Authorization: used to control user access rights to resources.
- Data encryption: used to protect data from illegal access.
- Security logging: used to record security events.
Performance optimization of JSP applications
Performance optimization of JSP applications mainly includes the following aspects:
- Cache : Used to cache frequently accessed data.
- Compression: Used to compress HTTP responses.
- Load balancing: used to distribute requests to multiple servers.
- Optimize database query: Used to reduce database query time.
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