404 servlet not found error in eclipse IDE - eclipse

Question

I'm working on a dynamic web project on eclipse IDE. My web.xml looks like
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>TestTest</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>NewServlet</servlet-name>
<servlet-class>NewServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>NewServlet</servlet-name>
<url-pattern>/NewServlet</url-pattern>
</servlet-mapping>
</web-app>
And here is my javascript code..
Example.js:
$.ajax('/NewServlet',params,function(result) {
var json = JSON.parse(result);
alert(json.data);
});
When I created the NewServlet.java, it didn't get automatically mapped in web.xml. I just manually entered it. Still I'm getting this error 404 not found
NewServlet.java file path is Java Resources->src->(DefaultPackage)->NewServlet.java
Example.js file path WebContent->Js->Example.js

Answer 1

There is problem in AJAX call.
It should be something like this :
$.ajax('NewServlet',params,function(result) {
var json = JSON.parse(result);
alert(json.data);
});
Without "/" check out here for example of AJAX call to Servlet.
Hope this helps.