Is it possible to pass a string from Java to JSP with Java Class?

Question

I need to create a string (sql statement) which might be pass to 2 or more jsp files. Recommended method is "by accessing the ServletContext attributes via Java scriptlet or the applicationScope via EL". But, is there a simple way to pass the string from java class to the jsp? Something like below?

Java

public class SharedSQL extends HttpServlet{

public String example() {

    String sqlstmt = "select ABC from ABC";

    return sqlstmt;
}

}

JSP

<%
     SharedSQL sqlStatement = new SharedSQL() ;
     String sqlstmt = sqlStatement.example();
     db4.query ( sqlstmt ) ;
%>

I am new to servlet/JSP 'things', need some hints and tips.

First thing's first. Go through our jstl and jsp wikis. Do not use scriptlets. — Sotirios Delimanolis
– Sotirios Delimanolis, Commented Oct 3, 2013 at 2:24
how stupid I am in the pass, I'm now started coding project with jstl in jsp. really appreciate... — 薛源少
– 薛源少, Commented Aug 29, 2014 at 7:27

Prabhakaran Ramaswamy · Accepted Answer · 2013-10-03 02:27:41Z

2

in Servlet do like below

public class SharedSQL extends HttpServlet{

    doGet(request ,response){
         request.setAttribute("sqlstmt", "select ABC from ABC");
    }
}

in jsp do like below

<%
     String sqlstmt = request.getAttribute("sqlstmt") 
     db4.query ( sqlstmt ) ;
%>

answered Oct 3, 2013 at 2:27

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Comments

mmuncada · Accepted Answer · 2017-05-15 06:12:35Z

1

You can also set it in the session attribute by

HttpSession session = request.getSession();
session.setAttribute("string",value) //you can set string, object in the value

Then directly access the value by using EL expression in jsp

${string}

mmuncada

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answered Oct 3, 2013 at 7:01

Chirag Kathiriya

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