JSP Syntax (9)

js| Syntax jsp:forward>

redirect an HTML file, JSP file, or a program segment.



JSP syntax

<jsp:forward page={"Relativeurl" | "<%= expression%>"}/>

Or

<jsp:forward page={"Relativeurl" | "<%= expression%>"} >

<jsp:param name= "ParameterName"

Value= "{parametervalue | <%= expression%>}"/>+

</jsp:forward>

Example

<jsp:forward page= "/servlet/login"/>

<jsp:forward page= "/servlet/login" >

<jsp:param name= "username" value= "jsmith"/>

</jsp:forward>

Describe

<jsp:forward> tags from a JSP file to another file to pass a request object containing the user requested the .<jsp:forward> tag code below, will not be executed.



You can transfer parameters and values to the target file, in this case we pass the parameter named Username, the value is Scott, if you use the <jsp:param> tag, the target file must be a dynamic file to handle the parameters.



If you use a non buffered output, be careful when using <jsp:forward>. If the JSP file already has data before you use <jsp:forward>, the file execution error occurs.



Property

Page= "{relativeurl | <%= expression%>}"

Here is an expression or a string that describes the file or URL you are going to orient. This file can be a JSP, a program segment, or any other file that can process the request object (such as asp,cgi,php).



<jsp:param name= "ParameterName value=" {parametervalue | <%= expression%>} "/>+

Send one or more parameters to a dynamic file, which must be a dynamic file.



If you want to pass multiple parameters, you can use multiple <jsp:param> in a JSP file. NAME specifies the parameter name, and value specifies the parameter value.