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POPassing data between jQuery and Servlet
 

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    <p>I have a HTML form:</p> <pre><code>&lt;head&gt; &lt;script src="//ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; $(document).ready(function() { $('#convert').click(function(){ //pairno tis times ap tin forma var amount = $('#amount').val(); var from = $('#from').val(); var to = $('#to').val(); //kano ta dedomena ena koino string var dataString = "amount=" + amount + "&amp;from=" + from + "&amp;to=" + to; $.ajax({ type: "POST", url: "CurrencyConverter", success: function(data){ //pairno ta dedomena $('#results').show(); //vazo ta dedomena sto results div tag. $('#results').html(data); } }); }); $('#swap').click(function() {   s1=$('#to').val();     s0=$('#from').val();     $('#to').val(s0);     $('#from').val(s1); }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div class="data"&gt; &lt;label for="from"&gt;Μετάτρεψε:&lt;/label&gt; &lt;input type="text" name="amount" id="amount" value="1" /&gt; &lt;/div&gt; &lt;div class="data"&gt; &lt;label for="fromCurrency"&gt;από:&lt;/label&gt; &lt;select name="from" id="from"&gt; &lt;option selected="" value="EUR"&gt;Euro - EUR&lt;/option&gt; &lt;option value="USD"&gt;United States Dollars - USD&lt;/option&gt; &lt;option value="GBP"&gt;United Kingdom Pounds - GBP&lt;/option&gt; &lt;option value="CAD"&gt;Canada Dollars - CAD&lt;/option&gt; &lt;/select&gt; &lt;/div&gt; &lt;div class="data"&gt; &lt;label for="to"&gt;σε:&lt;/label&gt; &lt;select name="to" id="to"&gt; &lt;option value="USD"&gt;United States Dollars - USD&lt;/option&gt; &lt;option value="GBP"&gt;United Kingdom Pounds - GBP&lt;/option&gt; &lt;option value="CAD"&gt;Canada Dollars - CAD&lt;/option&gt; &lt;option value="AUD"&gt;Australia Dollars - AUD&lt;/option&gt; &lt;option value="JPY"&gt;Japan Yen - JPY&lt;/option&gt; &lt;/select&gt; &lt;/div&gt; &lt;div class="data"&gt; &lt;input type="submit" value="Μετατροπή"&gt; &lt;input type="submit" name="swap" id="swap" value="αντάλλαξέ τα!"&gt; &lt;/div&gt; &lt;/div&gt; &lt;div id="results"&gt;&lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>I want to extract the data from that form using the script on the top and send them to my servlet.</p> <p>Here is my servlet code:</p> <pre><code>package com.example.web; import com.example.model.*; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.lang.*; import java.util.*; public class CurrencySelect extends HttpServlet{ public void doPost(HttpServletRequest request,HttpServletResponse response)throws IOException, ServletException{ //response.setContentType("text/html;charset=UTF-8"); String from = request.getParameter("from"); String to = request.getParameter("to"); String amount = request.getParameter("amount"); CurrencyGenerator curr = new CurrencyGenerator(); String res = curr.GetCurrency(from,to,amount); out.println(res); } } </code></pre> <p>And here is my <code>web.xml</code> file:</p> <pre><code> &lt;?xml version="1.0" encoding="ISO-8859-1"?&gt; &lt;web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" Version="2.4"&gt; &lt;servlet&gt; &lt;servlet-name&gt;CurrencyConverter&lt;/servlet-name&gt; &lt;servlet-class&gt;com.example.web.CurrencySelect&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet&gt; &lt;servlet-name&gt;CodeReturn&lt;/servlet-name&gt; &lt;servlet-class&gt;com.example.web.CodeReturn&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet&gt; &lt;servlet-name&gt;Redirect&lt;/servlet-name&gt; &lt;servlet-class&gt;com.example.web.Redirect&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet&gt; &lt;servlet-name&gt;ListenerTester&lt;/servlet-name&gt; &lt;servlet-class&gt;com.example.web.ListenerTester&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;CurrencyConverter&lt;/servlet-name&gt; &lt;url-pattern&gt;/CurrencyConverter.do&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;CodeReturn&lt;/servlet-name&gt; &lt;url-pattern&gt;/CodeReturn.do&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;Redirect&lt;/servlet-name&gt; &lt;url-pattern&gt;/Redirect.do&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;ListenerTester&lt;/servlet-name&gt; &lt;url-pattern&gt;/ListenTest.do&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;context-param&gt; &lt;param-name&gt;report&lt;/param-name&gt; &lt;param-value&gt;report.html&lt;/param-value&gt; &lt;/context-param&gt; &lt;listener&gt; &lt;listener-class&gt;com.example.model.MyServletContextListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;/web-app&gt; </code></pre> <p>I want to print the result in my html form page in a div I have in the end called results. I had the same script made with php and everything was working fine but with servlets. I can get my results in a new page, but I cannot take them in the same HTML page. How can I solve it?</p>
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