The below test case (created after experiencing the problem in a full blown app) contains two methods - one annotated @RequestMapping, the second @RequestMapping( method=RequestMethod.POST) - this is causing requests for the first method to be incorrectly dispatched to the second method.

import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;

import junit.framework.TestCase;

import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;

public class SpringAnnotationMethodHandlerAdapterParameterTest extends TestCase
{

    public void testSingleMethod() throws Exception
    {
        executeTest( "/foo/handleBill?", new MultiMethodController() );
        executeTest( "/foo/generateFromReconciliation", new MultiMethodController() );
    }

    private void executeTest( String url, Object handler ) throws Exception
    {
        AnnotationMethodHandlerAdapter amha = new AnnotationMethodHandlerAdapter();

        MockHttpServletRequest request = new MockHttpServletRequest( "POST", url );
        request.addParameter( "data", "foo" );
        HttpServletResponse response = new MockHttpServletResponse();

        amha.handle( request, response, handler );
    }

    @Controller
    @RequestMapping( value = { "/foo/*", "/bar/*" }, method = RequestMethod.POST )
    public static class MultiMethodController
    {
        @RequestMapping
        public void handleBill( @RequestParam( "data" )
        String data, PrintWriter out ) throws Exception
        {
            System.out.println( "handleBill" );
        }

        @RequestMapping( method = RequestMethod.POST )
        public void generateFromReconciliation( @RequestParam( "data" )
        String data ) throws Exception
        {
            System.out.println( "generateFromReconciliation" );
        }

    }
}