Output javascript in struts perform()

Question

I would like to output javascript in struts perform() like in servlet.
          But I failed to get the message, could you any one give me some ideas?
          ==========================================================
          public class LoginAction extends Action implements Serializable{
          public ActionForward perform(ActionMapping actionMapping,
          ActionForm actionForm,
          HttpServletRequest httpServletRequest,
          HttpServletResponse httpServletResponse) {
          if(db_password.equalsIgnoreCase("") ){
          PrintWriter out = httpServletResponse.getWriter();
          out.println("<script language=JavaScript>");
          out.println("<!--");
          out.println("alert(\"Auth Fail!\");");
          out.println("-->");
          out.println("<script>");
          return actionMapping.findForward("failure");
          return actionMapping.findForward("failure");
          ===========================================================
          

Answer 1

          Ok, let's see, where do I start?
          First of all, if your JavaScript is basically static code, even with some variable
          substitutions, you shouldn't be trying to output it in Java code. That's what
          JSP is for.
          Second, and related to the first point, first write your JavaScript in a JSP or
          HTML page, and verify whether it works. Your JavaScript syntax looks wrong.
          The "script" element should wrap your JavaScript code. Look at some examples
          on the web.
          Third, and a minor point, if you say you're using the "perform" method, that seems
          to imply you're using "old" Struts, version 1.0.2. Version 1.1 was released quite
          a while ago, and it's much better.
          and finally, you seem to be confused about how server-side Java and JavaScript
          are executed. JavaScript is only interpreted and executed in the browser, not
          on the server side. You appear to be trying to execute that JavaScript code as
          a result of your password verification failure.
          "Samuel Hsu" <[email protected]> wrote:
          >I would like to output javascript in struts perform() like in servlet.
          >But I failed to get the message, could you any one give me some ideas?
          >
          >==========================================================
          >public class LoginAction extends Action implements Serializable{
          > public ActionForward perform(ActionMapping actionMapping,
          > ActionForm actionForm,
          > HttpServletRequest httpServletRequest,
          > HttpServletResponse httpServletResponse) {
          >
          >if(db_password.equalsIgnoreCase("") ){
          > PrintWriter out = httpServletResponse.getWriter();
          > out.println("<script language=JavaScript></script>");
          > out.println("<!--");
          > out.println("alert(\"Auth Fail!\");");
          > out.println("-->");
          > out.println("<script></script>");
          >
          > return actionMapping.findForward("failure");
          > }
          >
          > return actionMapping.findForward("failure");
          >
          > }
          >}
          >
          >===========================================================
          >
          >