I'm writing a jsp file code that creates dropdown menus dynamically; the entries on the menus are dinamically inserted after a query executed in dao.QueriesDAO java class. Additionally, there is a search bar.
I want all the selected voices from the menus, plus the string inserted in the search bar, are sent to the servlet SearchServelt.java, contained in src/controller/SearchServlet.java, after the Search button it's clicked.
JSP file (in WebContent/jsp/homeView.jsp):
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" import="java.util.List, java.util.Iterator" %>
<!DOCTYPE html>
<html>
<head></head>
<body>
<jsp:include page="_header.jsp"></jsp:include>
<jsp:include page="_menu.jsp"></jsp:include>
<div style = "text-align: center">
<form action="/Search" method="post">
Search <input name="search"> <input type="submit" value="Search"/>
</form>
</div>
<div style = "text-align: center">
<%-- select value brand from drop-downlist --%>
<div style = "display: inline-block">
<%
List<String> brands = dao.QueriesDAO.getBrands();
Iterator<String> iterBrands = brands.iterator();
%>
<form name="f1" method="post" action="/Search">
Select brand:
<select name="brand">
<option value="All">All</option>
<% while(iterBrands.hasNext()){ %>
<option><%= (String) iterBrands.next() %></option>
<% } %>
</select>
</form>
</div>
<%-- select value of instrument type from drop-downlist --%>
<div style = "display: inline-block">
<%
List<String> instrumentTypes = dao.QueriesDAO.getInstrumentType();
Iterator<String> iterInstrumentTypes = instrumentTypes.iterator();
%>
<form name="f2" method="post" action="/Search">
Select instrument type:
<select name="instrumentType">
<option value="All">All</option>
<% while(iterInstrumentTypes.hasNext()){ %>
<option><%= (String) iterInstrumentTypes.next() %></option>
<% } %>
</select>
</form>
</div>
<%-- select value used from drop-downlist --%>
<div style = "display: inline-block">
<form name="f3" method="post" action="/Search">
Select used status:
<select name="used">
<option value="0">All</option>
<option value="false">Not used</option>
<option value="true">used</option>
</select>
</form>
</div>
<%-- select value product type from drop-downlist --%>
<div style = "display: inline-block">
<form name="f4" method="post" action="/Search">
Select product type:
<select name="productType">
<option value="All">All</option>
<option value="2">Professional product</option>
<option value="1">Scholastic product</option>
<option value="0">Classic product</option>
</select>
</form>
</div>
</div>
<jsp:include page="_footer.jsp"></jsp:include>
</body>
</html>
Servlet file:
package controller;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(urlPatterns = { "/search"})
public class SearchServlet extends HttpServlet {
private static final long serialVersionUID = -1953084286713579746L;
public SearchServlet() {
super();
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String searchParameters= request.getParameter("search");
String brandSelected= request.getParameter("brand");
String selectedInstrumentType= request.getParameter("instrumentType");
String selectedUsedStatus= request.getParameter("used");
String selectedProductType= request.getParameter("productType");
System.out.println("Inserted: " + searchParameters + ", "
+ brandSelected + ", "
+ selectedInstrumentType + ", "
+ selectedUsedStatus + ", "
+ selectedProductType + ".");
}
}
I want to be able to work with the values from the servlet and then eventually call other java methods and/or jsp files.
I don't know what is wrong, because I've seen similar questions on stackoverflow and I utilized the solution proposed.
I'll like to know what do I do of wrong and what should be a good approach to a problem like this, thank you very much.
The homeView.jsp file is called from a different servlet, HomeServlet.java. Should I use that servlet instead of a new servlet SearchServlet.java? What is better?
EDIT:
I resolved with <form action="${pageContext.request.contextPath}/search" method="get"> in the JSP page (and modified in having a single form), and accordingly I changed the SearchServlet.java method from doPost to doGet.
