Java ModelAndViewContainer类代码示例

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

    if (returnValue == null) {
        mavContainer.setRequestHandled(true);
        return;
    }

    final AsyncResponseEntity<?> asyncResponseEntity = AsyncResponseEntity.class.cast(returnValue);
    
    Observable<?> observable = asyncResponseEntity.getObservable();
    Single<?> single = asyncResponseEntity.getSingle();
    MultiValueMap<String, String> headers =  asyncResponseEntity.getHeaders();
    HttpStatus status = asyncResponseEntity.getStatus();
    
    if(observable != null)
    	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(new ObservableDeferredResult<>(observable, headers, status), mavContainer);
    else if(single != null)
    	WebAsyncUtils.getAsyncManager(webRequest).startDeferredResultProcessing(new SingleDeferredResult<>(single, headers, status), mavContainer);
    
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {

    HttpServletRequest servletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
    MultipartHttpServletRequest multipartRequest = WebUtils.getNativeRequest(servletRequest, MultipartHttpServletRequest.class);

    ExcelRequestBody annotation = parameter.getParameterAnnotation(ExcelRequestBody.class);
    if (multipartRequest != null) {
        List<Object> result = new ArrayList<>();
        List<MultipartFile> files = multipartRequest.getFiles(annotation.name());
        for (MultipartFile file : files) {
            if (converters.supportsExcelType(annotation.type())) {
                List<?> part = converters.fromExcel(annotation, file.getInputStream());
                result.addAll(part);
            }
        }
        return result;
    }
    return null;

}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
    String nonceBase64 = getNonceOrThrow(webRequest);
    String nonceSignatureBase64 = getNonceSignatureOrThrow(webRequest);

    if (!isBase64(nonceBase64)) {
        throw new BadRequestException("Nonce must be base64");
    }
    if (!isBase64(nonceSignatureBase64)) {
        throw new BadRequestException("Nonce signature must be base64");
    }

    return NonceAuthenticationImpl.builder()
            .nonceBase64(nonceBase64)
            .nonceSignatureBase64(nonceSignatureBase64)
            .build();
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public Object resolveArgument(
		MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest webRequest, WebDataBinderFactory binderFactory)
		throws Exception {

	ModelMap model = mavContainer.getModel();
	if (model.size() > 0) {
		int lastIndex = model.size()-1;
		String lastKey = new ArrayList<String>(model.keySet()).get(lastIndex);
		if (lastKey.startsWith(BindingResult.MODEL_KEY_PREFIX)) {
			return model.get(lastKey);
		}
	}

	throw new IllegalStateException(
			"An Errors/BindingResult argument is expected to be declared immediately after the model attribute, " +
			"the @RequestBody or the @RequestPart arguments to which they apply: " + parameter.getMethod());
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
/**
 * Delegate to the {@link WebArgumentResolver} instance.
 * @exception IllegalStateException if the resolved value is not assignable
 * to the method parameter.
 */
@Override
public Object resolveArgument(
		MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest webRequest, WebDataBinderFactory binderFactory)
		throws Exception {

	Class<?> paramType = parameter.getParameterType();
	Object result = this.adaptee.resolveArgument(parameter, webRequest);
	if (result == WebArgumentResolver.UNRESOLVED || !ClassUtils.isAssignableValue(paramType, result)) {
		throw new IllegalStateException(
				"Standard argument type [" + paramType.getName() + "] in method " + parameter.getMethod() +
				"resolved to incompatible value of type [" + (result != null ? result.getClass() : null) +
				"]. Consider declaring the argument type in a less specific fashion.");
	}
	return result;
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public void handleReturnValue(
		Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest)
		throws Exception {

	if (returnValue == null) {
		return;
	}
	else if (returnValue instanceof Map){
		mavContainer.addAllAttributes((Map) returnValue);
	}
	else {
		// should not happen
		throw new UnsupportedOperationException("Unexpected return type: " +
				returnType.getParameterType().getName() + " in method: " + returnType.getMethod());
	}
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
/**
 * Populate the model in the following order:
 * <ol>
 * 	<li>Retrieve "known" session attributes -- i.e. attributes listed via
 * 	{@link SessionAttributes @SessionAttributes} and previously stored in
 * 	the in the model at least once
 * 	<li>Invoke {@link ModelAttribute @ModelAttribute} methods
 * 	<li>Find method arguments eligible as session attributes and retrieve
 * 	them if they're not	already	present in the model
 * </ol>
 * @param request the current request
 * @param mavContainer contains the model to be initialized
 * @param handlerMethod the method for which the model is initialized
 * @throws Exception may arise from {@code @ModelAttribute} methods
 */
public void initModel(NativeWebRequest request, ModelAndViewContainer mavContainer, HandlerMethod handlerMethod)
		throws Exception {

	Map<String, ?> attributesInSession = this.sessionAttributesHandler.retrieveAttributes(request);
	mavContainer.mergeAttributes(attributesInSession);

	invokeModelAttributeMethods(request, mavContainer);

	for (String name : findSessionAttributeArguments(handlerMethod)) {
		if (!mavContainer.containsAttribute(name)) {
			Object value = this.sessionAttributesHandler.retrieveAttribute(request, name);
			if (value == null) {
				throw new HttpSessionRequiredException("Expected session attribute '" + name + "'");
			}
			mavContainer.addAttribute(name, value);
		}
	}
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
/**
 * Invoke model attribute methods to populate the model. Attributes are
 * added only if not already present in the model.
 */
private void invokeModelAttributeMethods(NativeWebRequest request, ModelAndViewContainer mavContainer)
		throws Exception {

	for (InvocableHandlerMethod attrMethod : this.attributeMethods) {
		String modelName = attrMethod.getMethodAnnotation(ModelAttribute.class).value();
		if (mavContainer.containsAttribute(modelName)) {
			continue;
		}

		Object returnValue = attrMethod.invokeForRequest(request, mavContainer);

		if (!attrMethod.isVoid()){
			String returnValueName = getNameForReturnValue(returnValue, attrMethod.getReturnType());
			if (!mavContainer.containsAttribute(returnValueName)) {
				mavContainer.addAttribute(returnValueName, returnValue);
			}
		}
	}
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public void handleReturnValue(
		Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest)
		throws Exception {

	if (returnValue == null) {
		return;
	}
	else if (returnValue instanceof Model) {
		mavContainer.addAllAttributes(((Model) returnValue).asMap());
	}
	else {
		// should not happen
		throw new UnsupportedOperationException("Unexpected return type: " +
				returnType.getParameterType().getName() + " in method: " + returnType.getMethod());
	}
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest) throws Exception {
    if (returnValue == null) {
        mavContainer.setRequestHandled(true);
        return;
    }

    final DeferredResult<Object> deferredResult = new DeferredResult<>();
    @SuppressWarnings("unchecked")
    ListenableFuture<Object> futureValue = (ListenableFuture<Object>) returnValue;
    Futures.addCallback(futureValue, new FutureCallback<Object>() {
        @Override
        public void onSuccess(@Nullable Object result) {
            deferredResult.setResult(result);
        }

        @Override
        public void onFailure(Throwable ex) {
            deferredResult.setErrorResult(ex);
        }
    });

    startDeferredResultProcessing(mavContainer, webRequest, deferredResult);
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Test
public void handlesSuccess() throws Exception {
    final AtomicReference<Object> value = new AtomicReference<>();

    ListenableFuture<String> future = Futures.immediateFuture("42");

    GuavaLFReturnValueHandler handler = new GuavaLFReturnValueHandler() {
        @Override
        protected void startDeferredResultProcessing(ModelAndViewContainer mavContainer, NativeWebRequest webRequest, DeferredResult<Object> deferredResult) throws Exception {
            value.set(deferredResult.getResult());
        }
    };

    handler.handleReturnValue(future, null, null, null);
    assertThat(value.get()).isEqualTo("42");
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Test
public void handlesFailure() throws Exception {
    final AtomicReference<Object> value = new AtomicReference<>();
    Exception ex = new Exception("This is bad");
    ListenableFuture<String> future = Futures.immediateFailedFuture(ex);

    GuavaLFReturnValueHandler handler = new GuavaLFReturnValueHandler() {
        @Override
        protected void startDeferredResultProcessing(ModelAndViewContainer mavContainer, NativeWebRequest webRequest, DeferredResult<Object> deferredResult) throws Exception {
            value.set(deferredResult.getResult());
        }
    };

    handler.handleReturnValue(future, null, null, null);
    assertThat(value.get()).isEqualTo(ex);
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
    HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);
    HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);

    Class<?> paramType = parameter.getParameterType();

    if (paramType.equals(WebInput.class)) {
        return new WebInput(request);
    } else if (paramType.equals(WebOutput.class)) {
        return new WebOutput(response);
    } else if (paramType.equals(FileWebInput.class)) {
        return new FileWebInput(request);
    }

    return null;
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
@SuppressWarnings("resource")
public void handleReturnValue(Object returnValue, MethodParameter returnType,
		ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

	mavContainer.setRequestHandled(true);

	Assert.isInstanceOf(HttpHeaders.class, returnValue);
	HttpHeaders headers = (HttpHeaders) returnValue;

	if (!headers.isEmpty()) {
		HttpServletResponse servletResponse = webRequest.getNativeResponse(HttpServletResponse.class);
		ServletServerHttpResponse outputMessage = new ServletServerHttpResponse(servletResponse);
		outputMessage.getHeaders().putAll(headers);
		outputMessage.getBody(); // flush headers
	}
}
 

import org.springframework.web.method.support.ModelAndViewContainer; //导入依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
		NativeWebRequest webRequest, WebDataBinderFactory binderFactory)
		throws IOException, HttpMediaTypeNotSupportedException {

	ServletServerHttpRequest inputMessage = createInputMessage(webRequest);
	Type paramType = getHttpEntityType(parameter);

	Object body = readWithMessageConverters(webRequest, parameter, paramType);
	if (RequestEntity.class == parameter.getParameterType()) {
		return new RequestEntity<Object>(body, inputMessage.getHeaders(),
				inputMessage.getMethod(), inputMessage.getURI());
	}
	else {
		return new HttpEntity<Object>(body, inputMessage.getHeaders());
	}
}