Populate JSP dropdown with database info

Question

I\'m trying to populate a JSP dropdown from a database table.

Here\'s the code that will create the array and fill it with the database info:

// this wil         


        

Answer 1

I would suggest trying to stay away from mixing the display and model code. Keep all of your html in the jsp page and create model backing objects that provide the information you need. For example, let's say you have a simple Java class that has a list of objects:

package com.example;

import java.util.ArrayList;
import java.util.List;

public class ListBean {

    public List getItems() {
        List list = new ArrayList();
        list.add("Thing1");
        list.add("Thing2");
        list.add("Thing3");
        return list;
    }
}

It doesn't matter how the getItems method constructs the list that it is returning. To display these items in the JSP Page using JSTL you would do the following:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 












    
     ${item}
    

Instead of using useBean the items collection used in the forEach loop could also come from the session or a request object.

This link also has good advice: http://java.sun.com/developer/technicalArticles/javaserverpages/servlets_jsp/