What format is jsp?

JSP is a dynamic web technology standard. Its file format is to insert Java program segments (Scriptlet) and JSP tags (tags) into traditional web page HTML files (.htm, .html) to form JSP File (*.jsp).

JSP (JavaServer Pages) is a dynamic web page technology standard. Its file format is inserted into traditional web page HTML files (.htm, .html) Java program segment (Scriptlet) and JSP tag (tag), thus forming a JSP file (*.jsp). The full name of JSP is Java Server Pages, and its Chinese name is Java Server Pages. It is similar to ASP technology, but uses the Java programming language. A JSP file is an embedded web page script that can usually be opened and edited with text or web design tools such as Notepad and DREAMWEAVER.

The advantages and disadvantages of JSP (JavaServer Pages) files are as follows:

Advantages:

1. Write once, run everywhere: JSP makes Java code and specific The file type has nothing to do with the system. As long as the system supports Java, you can use JSP.

2. Multi-platform support of the system: basically it can be developed in any environment on all platforms, system deployed in any environment, and expanded in any environment. The limitations compared to ASP/PHP are obvious.

3. Powerful scalability: From just a small Jar file to run Servlet/JSP, to multiple servers for clustering and load balancing, to multiple Applications for transaction processing , message processing, from one server to countless servers, Java shows great vitality.

4. Diverse and powerful development tool support: This is very similar to ASP. Java already has many excellent development tools, many of which are available for free, and many of them have Can run smoothly on multiple platforms.

Disadvantages:

1. JSP technology greatly increases the complexity of the product: in order to obtain the system’s cross-platform functionality and product scalability, The Java system has developed a variety of products, such as JRE, JDK, J2EE, EJB, JSWDK, JavaBeans, etc. Only by effectively combining them can powerful functions be produced. This increases the difficulty of deployment.

2. The high-efficiency operation of java requires a large amount of memory and hard disk space: on the one hand, the high-speed operation of java is achieved through the resident memory of .class files. On the other hand, hard disk space is also needed to store a series of .java files and .class files and corresponding version files. This increases hardware requirements.

3. JSP program debugging is difficult: When the JSP page is executed, it is first converted into a .java file (Servlet), and then the .java file is compiled into a bytecode file. In this way, the error message actually points to the converted .java file (Servlet), not the JSP itself. This makes debugging more difficult.

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