Java 类org.springframework.web.servlet.HandlerAdapter 实例源码

private List<HandlerAdapter> extractAdapters() {
    List<HandlerAdapter> list = new ArrayList<HandlerAdapter>();
    list.addAll(this.beanFactory.getBeansOfType(HandlerAdapter.class).values());
    list.remove(this);
    AnnotationAwareOrderComparator.sort(list);
    return list;
}

@Override
public boolean supports(Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return true;
        }
    }
    return false;
}

@Override
public ModelAndView handle(HttpServletRequest request,
        HttpServletResponse response, Object handler) throws Exception {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.handle(request, response, handler);
        }
    }
    return null;
}

@Override
public long getLastModified(HttpServletRequest request, Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.getLastModified(request, handler);
        }
    }
    return 0;
}

@Test
public void handlerAdaptersCreated() throws Exception {
    load();
    assertThat(this.context.getBeanNamesForType(HandlerAdapter.class).length)
            .isEqualTo(3);
    assertThat(this.context.getBean(RequestMappingHandlerAdapter.class)
            .getMessageConverters()).isNotEmpty()
                    .isEqualTo(this.context.getBean(HttpMessageConverters.class)
                            .getConverters());
}

private List<HandlerAdapter> extractAdapters() {
    List<HandlerAdapter> list = new ArrayList<HandlerAdapter>();
    list.addAll(this.beanFactory.getBeansOfType(HandlerAdapter.class).values());
    list.remove(this);
    AnnotationAwareOrderComparator.sort(list);
    return list;
}

@Override
public boolean supports(Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return true;
        }
    }
    return false;
}

@Override
public ModelAndView handle(HttpServletRequest request,
        HttpServletResponse response, Object handler) throws Exception {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.handle(request, response, handler);
        }
    }
    return null;
}

@Override
public long getLastModified(HttpServletRequest request, Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.getLastModified(request, handler);
        }
    }
    return 0;
}

@Test
public void handlerAdaptersCreated() throws Exception {
    load();
    assertThat(this.context.getBeanNamesForType(HandlerAdapter.class).length)
            .isEqualTo(3);
    assertThat(this.context.getBean(RequestMappingHandlerAdapter.class)
            .getMessageConverters()).isNotEmpty()
                    .isEqualTo(this.context.getBean(HttpMessageConverters.class)
                            .getConverters());
}

@Override
protected HandlerAdapter getHandlerAdapter(Object handler) throws ServletException {
    if (handler instanceof HttpRequestHandler) {
        return new HttpRequestHandlerAdapter();
    } else if (handler instanceof Controller) {
        Object unwrappedHandler = ClassLoaderUtils.unwrapFromProxy(handler);
        if (unwrappedHandler instanceof CXFServletControllerAdapter) {
            // TODO this just seems weird as this controller is initially null when it's created, does there need to be some synchronization here?
            ((CXFServletControllerAdapter)unwrappedHandler).setController(cxfServletController);
        }           
        return new SimpleControllerHandlerAdapter();
    }
    throw new RiceRuntimeException("handler of type " + handler.getClass().getName() + " is not known and can't be used by " + KSBDispatcherServlet.class.getName());
}

private List<HandlerAdapter> extractAdapters() {
    List<HandlerAdapter> list = new ArrayList<HandlerAdapter>();
    list.addAll(this.beanFactory.getBeansOfType(HandlerAdapter.class).values());
    list.remove(this);
    AnnotationAwareOrderComparator.sort(list);
    return list;
}

@Override
public boolean supports(Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return true;
        }
    }
    return false;
}

@Override
public ModelAndView handle(HttpServletRequest request,
        HttpServletResponse response, Object handler) throws Exception {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.handle(request, response, handler);
        }
    }
    return null;
}

@Override
public long getLastModified(HttpServletRequest request, Object handler) {
    if (this.adapters == null) {
        this.adapters = extractAdapters();
    }
    for (HandlerAdapter mapping : this.adapters) {
        if (mapping.supports(handler)) {
            return mapping.getLastModified(request, handler);
        }
    }
    return 0;
}

@Test
public void handlerAdaptersCreated() throws Exception {
    load();
    assertEquals(3, this.context.getBeanNamesForType(HandlerAdapter.class).length);
    assertFalse(this.context.getBean(RequestMappingHandlerAdapter.class)
            .getMessageConverters().isEmpty());
    assertEquals(this.context.getBean(HttpMessageConverters.class).getConverters(),
            this.context.getBean(RequestMappingHandlerAdapter.class)
                    .getMessageConverters());
}

/**
 * @see HandlerInterceptor#preHandle(HttpServletRequest,HttpServletResponse, Object)
 */
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
{

    if (request.getParameter(TableTagParameters.PARAMETER_EXPORTING) == null)
    {
        if (log.isDebugEnabled())
        {
            log.debug(Messages.getString("ResponseOverrideFilter.parameternotfound")); //$NON-NLS-1$
        }
        // don't intercept!
        return true;
    }

    BufferedResponseWrapper wrapper = new BufferedResponseWrapper13Impl(response);

    Map<String, Boolean> contentBean = new HashMap<String, Boolean>(4);
    if (buffer)
    {
        contentBean.put(TableTagParameters.BEAN_BUFFER, Boolean.TRUE);
    }
    request.setAttribute(TableTag.FILTER_CONTENT_OVERRIDE_BODY, contentBean);

    if (log.isDebugEnabled())
    {
        log.debug("handler is " + handler);
    }

    HandlerAdapter handlerAdaptor = new SimpleControllerHandlerAdapter();
    handlerAdaptor.handle(request, wrapper, handler);

    ExportDelegate.writeExport(response, request, wrapper);

    return false;
}

@Override
protected HandlerAdapter getHandlerAdapter(Object handler) throws ServletException {
    if (handler instanceof HttpRequestHandler) {
        return new HttpRequestHandlerAdapter();
    } else if (handler instanceof Controller) {
        Object unwrappedHandler = ClassLoaderUtils.unwrapFromProxy(handler);
        if (unwrappedHandler instanceof CXFServletControllerAdapter) {
            // TODO this just seems weird as this controller is initially null when it's created, does there need to be some synchronization here?
            ((CXFServletControllerAdapter)unwrappedHandler).setController(cxfServletController);
        }           
        return new SimpleControllerHandlerAdapter();
    }
    throw new RiceRuntimeException("handler of type " + handler.getClass().getName() + " is not known and can't be used by " + KSBDispatcherServlet.class.getName());
}

@Override
protected HandlerAdapter getHandlerAdapter(Object handler) throws ServletException {
    if (handler instanceof HttpRequestHandler) {
        return new HttpRequestHandlerAdapter();
    } else if (handler instanceof Controller) {
        Object unwrappedHandler = ClassLoaderUtils.unwrapFromProxy(handler);
        if (unwrappedHandler instanceof CXFServletControllerAdapter) {
            // TODO this just seems weird as this controller is initially null when it's created, does there need to be some synchronization here?
            ((CXFServletControllerAdapter)unwrappedHandler).setController(cxfServletController);
        }           
        return new SimpleControllerHandlerAdapter();
    }
    throw new RiceRuntimeException("handler of type " + handler.getClass().getName() + " is not known and can't be used by " + KSBDispatcherServlet.class.getName());
}

@Bean
public HandlerAdapter handlerAdapter() {
    return new RequestMappingHandlerAdapter();
}

@Bean
public HandlerAdapter handlerAdapter() {
    return new RequestMappingHandlerAdapter();
}

@Bean
public HandlerAdapter handlerAdapter() {
    return new RequestMappingHandlerAdapter();
}

@Bean
HandlerAdapter handler(){
    RequestMappingHandlerAdapter a = new RequestMappingHandlerAdapter();
    return a;
}

@Bean
HandlerAdapter handler(){
    RequestMappingHandlerAdapter a = new RequestMappingHandlerAdapter();
    return a;
}