How to use @RequestMapping headers?

I am studying springmvc. When I use @RequestMapping(value="/helloWorld", headers = "content-type=text/*") and connect to http://localhost:8080/SpringMVC_10100/helloWorld, the following is output in the console:

WARN org.springframework.web.servlet.PageNotFound - No matching handler method found for servlet request: path '/helloWorld', method 'GET', parameters map[[empty]]

My code is:

@Controller
public class HelloWordController {
    private Logger logger = LoggerFactory.getLogger(HelloWordController.class);

    @RequestMapping(value="/helloWorld", headers = "content-type=text/*")
    public ModelAndView helloWorld() {
        logger.debug("jin ru le");
        logger.info("The helloWorld() method is use");
        ModelAndView view = new ModelAndView();
        view.setViewName("/he开发者_如何学Golloworld");
        return view;
    }
}

web.xml is

<servlet>
    <description>This is Spring MVC DispatcherServlet</description>
    <servlet-name>SpringMVC DispatchServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <description>SpringContext</description>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>SpringMVC DispatchServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

Why?

Its most likely the case that /helloworld is not inside the path configured for your dispatcher servlet

e.g. If i have a servlet configured like so:

  <servlet>
    <servlet-name>BMA</servlet-name>
    <servlet-class>
       org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <load-on-startup>2</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>BMA</servlet-name>
    <url-pattern>/bma/*</url-pattern>
  </servlet-mapping>

And i have a controller configured like so:

@RequestMapping(value = "/planner/plan/{planId}/delete", method = RequestMethod.GET)
public ModelAndView deletePlanConfirm(HttpServletRequest request,  
       @PathVariable("planId")   Long planId)   {}

Then the request in browsder would be:

http://localhost:8080/bma/planner/plan/1223/delete

Edit: Also if you have content-type header narrowing on your handler, make sure that content-type haeder is sent in your request.

In the below annotation remove the headers:

@RequestMapping(value="/helloWorld", headers = "content-type=text/*")

to:

@RequestMapping(value="/helloWorld",  method = RequestMethod.GET)

or to:

@RequestMapping(value="/helloWorld")

should make it work.