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PODemo simple Ajax ans Servelt implementation fails
 

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    <p>I am trying to demo simple Ajax/Servlet request.For this i have created a new Dynamic web project in eclipse and added a simple Servlet to take the request and present the same back to UI. I have included my Servlet details in web.xml. I am using Tomcat as my server. No Build scripts yet(i felt not needed at this point)</p> <p>Servlet Code: </p> <pre><code>response.setContentType("text/html"); PrintWriter out =response.getWriter(); String txt = request.getQueryString(); out.println(txt); </code></pre> <p>Js Code:</p> <pre><code>$(function(){ $.get('/jirarequest','OK',function(op){ $('#maindiv').appendTo(op); }); }); </code></pre> <p>Html Code:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"&gt; &lt;display-name&gt;Jira-Synchronization&lt;/display-name&gt; &lt;welcome-file-list&gt; &lt;welcome-file&gt;index.html&lt;/welcome-file&gt; &lt;welcome-file&gt;index.htm&lt;/welcome-file&gt; &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt; &lt;welcome-file&gt;default.html&lt;/welcome-file&gt; &lt;welcome-file&gt;default.htm&lt;/welcome-file&gt; &lt;welcome-file&gt;default.jsp&lt;/welcome-file&gt; &lt;/welcome-file-list&gt; &lt;servlet&gt; &lt;servlet-name&gt;JiraSyncServlet&lt;/servlet-name&gt; &lt;servlet-class&gt;src.JiraSyncServlet&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;JiraSyncServlet&lt;/servlet-name&gt; &lt;url-pattern&gt;/jirarequest/*&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; </code></pre> <p></p> <p>My Project structure:<img src="https://i.stack.imgur.com/7Rhug.png" alt="enter image description here"></p> <p>My HTML:</p> <p><img src="https://i.stack.imgur.com/kxh4y.png" alt="enter image description here"></p> <p>I am getting a error in Fire bug saying </p> <pre><code>"NetworkError: 404 Not Found - http://localhost:8080/jirarequest?OK" </code></pre> <p>The URL i am using in browser is <code>http://localhost:8080/Jira-Synchronization/index.html</code>. i have double checked all kind of typo. I debugged by putting breaking point but the debugger never hit my Servelt. I am not sure what is wrong? URL is wrong or wiring is wrong or the way it set up something is missing?</p>
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    1. COTry to hit `http://localhost:8080/jirarequest/whatever?OK` (You can test from your browser without using the javascript.)
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    2. COI tried it is throwing "HTTP Status 500 - Error instantiating servlet class src.JiraSyncServlet"
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    3. COThat means the URL is correct with something after `jirarequest/`. Now on to problem 2. There should be a log somewhere on the server showing an exception and stack trace. The particular exception should help you. Error 500 usually means an unexpected exception occurred.
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