JSP contains static and dynamic differences included

jsp include dynamic and static content contained achieve the same, but in different ways.

jsp static includes <file = ""%% @ include>

Creating include1.jsp and include2.jsp

　　include1.jsp Code

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    
<%@ include file="include2.jsp"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    this is include page 1
</body>
</html>

　　include2.jsp代

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    this is include page 2
</body>
</html>

operation result:

If it is still included, only generate a java file

The reason: Because include1.jsp should include2.jsp content exact quote, all include1.jsp will synthesize and include2.jsp a jsp, then translated into .java files, and finally compile and run.

jsp dynamic include <jsp: include page = ""> </ jsp: include>

Creating Newfile1.jsp and NewFile2.jsp

Newfile1.jsp Code

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    <jsp:include page="/NewFile2.jsp"></jsp:include>
    this is newFile1
</body>
</html>

Newfile2.jsp Code

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    this is newFile2
</body>
</html>

operation result:

If it contains a dynamic, two .java file is generated

The reason: because it is the first visit NewFile1.jsp, so first translated into NewFile1_jsp.java, and then found the code compile and run time , then return to visit NewFile2.jsp, then translated NewFile2_jsp.java, and finally compile the contents together.

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JSP contains static and dynamic differences included

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