Use struts2 value in JSP

The struts2 value is stored in valuestack. Suppose there is a string 'str', which is generally the value:

<S: property value = "str"/> or $ {STR}

If you want to use it in JSP, you can use the following:

<%@ PageImport="Com. opensymphony. xwork2.util. valuestack" %>

......

<% =(Valuestack) request. getattribute ("Struts. valuestack"). Findstring ("Str")%>
 

 

You can also put the value in valuestack into attribute first, and then directly take the value of attribute:

 
<S: Set Name="Str"Value="% {STR}" />

<% =Request. getattribute ("Str")%>
 

Call a function on the struts2 page

Method 1:

<S: Set Name = "str" value = "'Hello world'"> </S: Set>

<S: property value = "% {@ com. Common. Constant @ func (# Str)}"/>

 

Func is a static method in COM. Common. Constant.

STR is a dynamic parameter

 

Method 2:

<S: bean name = "com. Common. strutshelper" id = "helper"/>

<S: Set Name = "str" value = "'Hello world'"> </S: Set>

<S: property value = "# helper. func (# Str)"/>

Func is a common method in COM. Common. strutshelper.

STR is a dynamic method

S: bean is actually an instantiation of the strutshelper class, which is somewhat different from method 1. The function in method 1 must be static.