Getting 404 error when calling Spring controller method from Angular $http - angularjs

Question

This question has been asked previously as well but it went unanswered for me. So posting it. Please help.
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<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">
<display-name>Angular</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>Spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/XmlViewResolver.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Spring</servlet-name>
<url-pattern>rest/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/Spring-servlet.xml
</param-value>
</context-param>
<!-- <listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener> -->
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>
XmlViewResolver.xml
<context:annotation-config />
<context:component-scan base-package="main.java.com.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<mvc:annotation-driven />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/views" />
<property name="suffix" value=".html" />
<property name="order" value="1" />
</bean>
Spring-servlet.xml
<context:annotation-config />
<context:component-scan base-package="main.java.com.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<mvc:annotation-driven />
<tx:annotation-driven transaction-manager="transactionManager"/>
inside Indexcontroller.js
$scope.login = function()
{
$http.post('rest/login', $scope.loginDto).success(function(data)
{
alert('success');
}).error(function()
{
alert('error while delete file.');
});
};
Indexcontroller.java
#Controller
public class IndexController {
#RequestMapping(value = "/login", method = RequestMethod.POST, consumes="application/json", produces="application/json")
public #ResponseBody LoginDto login(#RequestBody LoginDto loginDto, HttpServletRequest req)
{
System.out.println(loginDto.getUserName()+" :::: "+loginDto.getPassword());
return loginDto;
}
}