Dear Lucas, Sorry if i am wrong about that. let me clarify in here.
let say i have pojo : public class FormColumnKey { private Integer formcolumnFormId; private String formcolumnName; //sette-getter } in action class, i have list of clolumn: private List<FormColumn> displayColumnList; and then, i put all my column from table into the list, next i’ll iterate that list in JSP. so this is what i’ve done in JSP: <s:iterator value="displayColumnList" var="a"> <s:textfield name="${a.formcolumnName}" cssClass="form-control form-control-md text-md" style="simple" placeholder="Value 1" /> </s:iterator> the jsp has error: Struts Problem Report Struts has detected an unhandled exception: Messages: /pages/common/genericform/genericMain.jsp (line: 165, column: 24) According to TLD or attribute directive in tag file, attribute name does not accept any expressions File: org/apache/jasper/compiler/DefaultErrorHandler.java Line number: 41 cause the error above, then i state attribute name on struts tag does not accept any expressions. if i test to just print like code bellow thats no problem: <s:iterator value="displayColumnList" var="a"> ${a.formcolumnName} </s:iterator> so, i read your documentation about the expression, then i change my code bellow: <s:iterator value="displayColumnList" var="a"> <s:textfield name="%{formcolumnName}" cssClass="form-control form-control-md text-md" style="simple" placeholder="Value 1" /> </s:iterator> it works perfectly, thank you Lucas. Regards > On 20 Feb 2020, at 16.16, Lukasz Lenart <lukaszlen...@apache.org> wrote: > > wt., 18 lut 2020 o 17:04 M Huzaifah <mhuzaifah.i...@gmail.com> napisał(a): >> Thank you Lucas, my goal is render the struts tag based on list of column >> name that i've set before. So i have to iterate the list of column using >> jstl than put the "name" on attribut name in struts tag. From here, i >> think i miss understanding about struts tag. I use struts 2.5x that not >> support for expressions anymore. > > Wait, what? Struts tags do not support expressions? Where did you find > such information? Did you read that? > https://struts.apache.org/tag-developers/tag-syntax.html (improved > version I'm working on right now > https://struts.staged.apache.org/tag-developers/tag-syntax.html) > > Also Struts tags are using our internal mechanism which prevents > evaluating malicious expressions, in case of using JSTL you don't have > such control and as those tags are out of Struts control you can > mistakenly inject a malicious code > https://struts.apache.org/security/#internal-security-mechanism > > Also using JSTL and Struts tags in the same JSP is like using Java and > Kotlin to write the same code. Anyway, Bad Idea. > > > Regards > > -- > Łukasz > + 48 606 323 122 http://www.lenart.org.pl/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org >