Spring MVC Path variable Case Sensitive Issue

Question

I have a Spring MVC Java web application. I have the following controller

@RequestMapping(value = "/{service}/list", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public ResultData getList(@PathVariable String service,
        @RequestBody QueryData queryData, HttpServletRequest request) {
    //controller code
    return response;
}

And I have following in my applicationContext.xml

<!-- Activates scanning of @Autowired -->
<context:annotation-config />
<context:component-scan base-package="some package" />
<mvc:annotation-driven />

<bean id="localeChangeInterceptor"
        class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
        <property name="paramName" value="lang" />
    </bean>

    <bean id="localeResolver"
        class="org.springframework.web.servlet.i18n.CookieLocaleResolver">
        <property name="defaultLocale" value="en" />
    </bean>

    <bean id="handlerMapping"
        class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
        <property name="interceptors">
            <ref bean="localeChangeInterceptor" />
        </property>
    </bean>

    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="32771748" />
    </bean>

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/" />
        <property name="suffix" value=".jsp" />
    </bean>

From the front end, I am trying to call the controller using AJAX call. The problem is Some URLs are working while the other gives 400 Bad Request and The request sent by the client was syntactically incorrect error. I tried to connect using RESTClient in Mozilla.

If URL is

1. /application/list - Status is 200 OK

2. /business/list - Status is 200 OK

3. /businessfunction/list - Status is 200 OK

4. /businessFunction/list - Status is 400 Bad Request

5. /tooltechnology/list - Status is 400 Bad Request

6. /toolTechnology/list - Status is 200 OK

The first two are ok. But 3 and 4, one letter is in upper case in 4th, and it's not taking. even if I try businessfFunction, it will work(added extra f before upper case letter F).

And in 5 and 6. I want to send like 5th case. ie, all are lower case and it's not working. But if I try with 6th, its working.

Why this is happening? And how can I resolve it?

Thanks.