Examples of org.springframework.web.servlet.HandlerMapping

org.springframework.web.servlet.HandlerMapping
Interface to be implemented by objects that define a mapping between requests and handler objects.
This class can be implemented by application developers, although this is not necessary, as {@link org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping}and {@link org.springframework.web.servlet.handler.SimpleUrlHandlerMapping}are included in the framework. The former is the default if no HandlerMapping bean is registered in the application context.
HandlerMapping implementations can support mapped interceptors but do not have to. A handler will always be wrapped in a {@link HandlerExecutionChain}instance, optionally accompanied by some {@link HandlerInterceptor} instances.The DispatcherServlet will first call each HandlerInterceptor's preHandle method in the given order, finally invoking the handler itself if all preHandle methods have returned true.
The ability to parameterize this mapping is a powerful and unusual capability of this MVC framework. For example, it is possible to write a custom mapping based on session state, cookie state or many other variables. No other MVC framework seems to be equally flexible.
Note: Implementations can implement the {@link org.springframework.core.Ordered}interface to be able to specify a sorting order and thus a priority for getting applied by DispatcherServlet. Non-Ordered instances get treated as lowest priority. @author Rod Johnson @author Juergen Hoeller @see org.springframework.core.Ordered @see org.springframework.web.servlet.handler.AbstractHandlerMapping @see org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping @see org.springframework.web.servlet.handler.SimpleUrlHandlerMapping

    wac.setConfigLocations(new String[] {CONF});
    wac.refresh();
  }


  public void testRequestsWithoutHandlers() throws Exception {
    HandlerMapping hm = (HandlerMapping) wac.getBean("handlerMapping");


    MockHttpServletRequest req = new MockHttpServletRequest("GET", "/mypath/nonsense.html");
    req.setContextPath("/myapp");
    Object h = hm.getHandler(req);
    assertTrue("Handler is null", h == null);


    req = new MockHttpServletRequest("GET", "/foo/bar/baz.html");
    h = hm.getHandler(req);
    assertTrue("Handler is null", h == null);
  }

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    h = hm.getHandler(req);
    assertTrue("Handler is null", h == null);
  }


  public void testRequestsWithSubPaths() throws Exception {
    HandlerMapping hm = (HandlerMapping) wac.getBean("handlerMapping");
    doTestRequestsWithSubPaths(hm);
  }

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    hec = hm.getHandler(req);
    assertTrue("Handler is correct bean", hec != null && hec.getHandler() == bean);
  }


  public void testAsteriskMatches() throws Exception {
    HandlerMapping hm = (HandlerMapping) wac.getBean("handlerMapping");
    Object bean = wac.getBean("godCtrl");


    MockHttpServletRequest req = new MockHttpServletRequest("GET", "/mypath/test.html");
    HandlerExecutionChain hec = hm.getHandler(req);
    assertTrue("Handler is correct bean", hec != null && hec.getHandler() == bean);


    req = new MockHttpServletRequest("GET", "/mypath/testarossa");
    hec = hm.getHandler(req);
    assertTrue("Handler is correct bean", hec != null && hec.getHandler() == bean);


    req = new MockHttpServletRequest("GET", "/mypath/tes");
    hec = hm.getHandler(req);
    assertTrue("Handler is correct bean", hec == null);
  }

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    wac.setConfigLocations(new String[] {"/org/springframework/web/servlet/handler/map2.xml"});
    wac.refresh();
    Object bean = wac.getBean("mainController");
    Object otherBean = wac.getBean("otherController");
    Object defaultBean = wac.getBean("starController");
    HandlerMapping hm = (HandlerMapping) wac.getBean(beanName);


    MockHttpServletRequest req = new MockHttpServletRequest("GET", "/welcome.html");
    HandlerExecutionChain hec = getHandler(hm, req);
    assertTrue("Handler is correct bean", hec != null && hec.getHandler() == bean);
    assertEquals("/welcome.html", req.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE));

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    verify(springMVCRequestNameDeterminerAspect, times(useNameDeterminerAspect ? 1 : 0))
        .aroundGetHandler(any(HttpServletRequest.class), any(HandlerExecutionChain.class));
  }


  private HandlerMapping createExceptionThrowingHandlerMapping() throws Exception {
    HandlerMapping requestMappingHandlerMapping = mock(HandlerMapping.class);
    when(requestMappingHandlerMapping.getHandler((HttpServletRequest) any())).thenThrow(new Exception("This is a test exeption"));
    return requestMappingHandlerMapping;
  }

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    when(requestMappingHandlerMapping.getHandler((HttpServletRequest) any())).thenThrow(new Exception("This is a test exeption"));
    return requestMappingHandlerMapping;
  }


  private HandlerMapping createHandlerMappingNotReturningHandlerMethod() throws Exception {
    HandlerMapping requestMappingHandlerMapping = mock(HandlerMapping.class);
    HandlerExecutionChain handlerExecutionChain = mock(HandlerExecutionChain.class);


    when(handlerExecutionChain.getHandler()).thenReturn(new Object());
    when(requestMappingHandlerMapping.getHandler((HttpServletRequest) any())).thenReturn(handlerExecutionChain);
    return requestMappingHandlerMapping;
  }

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    return requestMappingHandlerMapping;
  }


  private HandlerMapping createHandlerMapping(MockHttpServletRequest request, Method requestMappingMethod) throws Exception {
    System.out.println("createHandlerMapping"+request);
    HandlerMapping requestMappingHandlerMapping = mock(HandlerMapping.class);
    HandlerExecutionChain handlerExecutionChain = mock(HandlerExecutionChain.class);
    HandlerMethod handlerMethod = mock(HandlerMethod.class);


    when(handlerMethod.getMethod()).thenReturn(requestMappingMethod);
    when(handlerExecutionChain.getHandler()).thenReturn(handlerMethod);
    when(requestMappingHandlerMapping.getHandler(Matchers.argThat(new Matcher<HttpServletRequest>() {
      @Override
      public boolean matches(Object item) {
        return ((HttpServletRequest) item).getRequestURI().equals("/test/requestName");
      }

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  @Test
  @SuppressWarnings("unchecked")
  public void webSocketHandlersAttributes() {
    loadBeanDefinitions("websocket-config-handlers-attributes.xml");


    HandlerMapping handlerMapping = this.appContext.getBean(HandlerMapping.class);
    assertNotNull(handlerMapping);
    assertTrue(handlerMapping instanceof SimpleUrlHandlerMapping);


    SimpleUrlHandlerMapping urlHandlerMapping = (SimpleUrlHandlerMapping) handlerMapping;
    assertEquals(2, urlHandlerMapping.getOrder());

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  @Test
  public void simpleBroker() throws Exception {
    loadBeanDefinitions("websocket-config-broker-simple.xml");


    HandlerMapping hm = this.appContext.getBean(HandlerMapping.class);
    assertThat(hm, Matchers.instanceOf(SimpleUrlHandlerMapping.class));
    SimpleUrlHandlerMapping suhm = (SimpleUrlHandlerMapping) hm;
    assertThat(suhm.getUrlMap().keySet(), Matchers.hasSize(4));
    assertThat(suhm.getUrlMap().values(), Matchers.hasSize(4));

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  @Test
  public void stompBrokerRelay() {
    loadBeanDefinitions("websocket-config-broker-relay.xml");


    HandlerMapping hm = this.appContext.getBean(HandlerMapping.class);
    assertNotNull(hm);
    assertThat(hm, Matchers.instanceOf(SimpleUrlHandlerMapping.class));


    SimpleUrlHandlerMapping suhm = (SimpleUrlHandlerMapping) hm;
    assertThat(suhm.getUrlMap().keySet(), Matchers.hasSize(1));

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Related Classes of org.springframework.web.servlet.HandlerMapping

org.springframework.boot.autoconfigure.web.WebMvcAutoConfigurationTests

org.springframework.web.servlet.handler.BeanNameUrlHandlerMappingTests

org.springframework.web.servlet.handler.SimpleUrlHandlerMappingTests

org.springframework.web.socket.config.HandlersBeanDefinitionParserTests

org.springframework.web.socket.config.MessageBrokerBeanDefinitionParserTests

org.stagemonitor.web.monitor.SpringRequestMonitorTest

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