JSP Standard Action :

September 20, 2014 by Mukesh Kumar at 3:47 pm

JSP actions allow you to insert a file dynamically, reuse external JavaBean components, forward the request to the other page and generate HTML.

SN	Syntax	Use
1	jsp:include	Includes a file at the time the page is requested
2	jsp:forward	Forwards the requester to a new page
3	jsp:param	To pass the parameter from one JSP to another JSP
4	jsp:useBean	For using java beans in JSP
5	jsp:setProperty	Sets the property of a JavaBean
6	jsp:getProperty	Gets the property of a JavaBean

jsp:include action :

JSP include action allows you to include a file at runtime. The syntax of jsp include action is as follows:

<jsp:include page="some jsp or html"/>

JSP actions allow you to insert a file dynamically, reuse external JavaBean components, forward the request to the other page and generate HTML.

SN	Syntax	Use
1	jsp:include	Includes a file at the time the page is requested
2	jsp:forward	Forwards the requester to a new page
3	jsp:param	To pass the parameter from one JSP to another JSP
4	jsp:useBean	For using java beans in JSP
5	jsp:setProperty	Sets the property of a JavaBean
6	jsp:getProperty	Gets the property of a JavaBean

jsp:include action :

JSP include action allows you to include a file at runtime. The syntax of jsp include action is as follows:

<jsp:include page="some jsp or html"/>

Following is an example of jsp:include usage. Let us define following two files index.jsp and header.jsp as follows:

index.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Index Page</title>
</head>
<body>
<jsp:include page="header.jsp"/>
<h2>Header part is in different file</h2>
</body>
</html>

header.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>header file</title>
</head>
<body>
<h2>This is header file</h2>
</body>
</html>

Browser Output :

JSP Standard Action

In the above example we are including header.jsp into index.jsp by using jsp:include action.

jsp:forward action :

jsp:forward action allows you to forward a request to the other page. The syntax of the jsp:forward action is given below.Attribute of forward action is page which value should be page you want to forward the request. You can specify the page either statically or dynamically by using expression.

<jsp:forward page="error.jsp" />

or

<jsp:forward page="<%= java-expression %>" />

Example :

index.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>forward example</title>
</head>
<body>
<h2> This is jsp forward tag example..</h2>
<jsp:forward page="info.jsp"/>
</body>
</html>

info.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>Welcome to info page...</h1>
</body>
</html>

Output in Browser :

jsp Application in Eclipse

In the above example we are forwarding request from index.jsp to info.jsp.

jsp:param tag :

jsp:param tag is used to pass the parameters when you are forwarding the request from one jsp to another JSP or while including one JSP to another JSP.

Example :

index.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<jsp:forward page="info.jsp">
<jsp:param name="name" value="Mukesh"/>
<jsp:param name="sid" value="99"/>
</jsp:forward>
</body>
</html>

info.jsp

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
Welcome
<%= request.getParameter("name")%>
<br>
Your SID is 
<%= request.getParameter("sid")%>
</body>
</html>

Output in Browser :

JSP Standard Action