Java RequestParam.value方法代码示例

import org.springframework.web.bind.annotation.RequestParam; //导入方法依赖的package包/类
@Override
public void contributeMethodArgument(MethodParameter parameter, Object value,
		UriComponentsBuilder builder, Map<String, Object> uriVariables, ConversionService conversionService) {

	Class<?> paramType = parameter.getParameterType();
	if (Map.class.isAssignableFrom(paramType) || MultipartFile.class.equals(paramType) ||
			"javax.servlet.http.Part".equals(paramType.getName())) {
		return;
	}

	RequestParam annot = parameter.getParameterAnnotation(RequestParam.class);
	String name = StringUtils.isEmpty(annot.value()) ? parameter.getParameterName() : annot.value();

	if (value == null) {
		builder.queryParam(name);
	}
	else if (value instanceof Collection) {
		for (Object element : (Collection<?>) value) {
			element = formatUriValue(conversionService, TypeDescriptor.nested(parameter, 1), element);
			builder.queryParam(name, element);
		}
	}
	else {
		builder.queryParam(name, formatUriValue(conversionService, new TypeDescriptor(parameter), value));
	}
}
 

import org.springframework.web.bind.annotation.RequestParam; //导入方法依赖的package包/类
@Override
public Object resolveArgument(MethodParameter parameter,
                              RestRequest request, RestDelegate handler) throws Exception {
    Class<?> type = parameter.getParameterType();
    RequestParam annotation = parameter
            .getParameterAnnotation(RequestParam.class);
    String value = annotation.value();

    JSONObject operationInput = new JSONObject(request.getOperationInput());
    Object param = operationInput.opt(value);
    return objectMapper.readValue(param != null ? param.toString() : null,
            type);
}
 

import org.springframework.web.bind.annotation.RequestParam; //导入方法依赖的package包/类
@Override
public void processAnnotation(MethodMetadata.Builder requestTemplateBuilder, Annotation annotation, Integer integer, Type parameterType) {
	RequestParam requestParam = RequestParam.class.cast(annotation);
	String name = requestParam.value();
	Assert.isTrue(StringUtils.hasText(name), "");

	requestTemplateBuilder.addParameter(integer, name);
}
 

import org.springframework.web.bind.annotation.RequestParam; //导入方法依赖的package包/类
public RequestParamNamedValueInfo(RequestParam annotation) {
	super(annotation.value(), annotation.required(), annotation.defaultValue());
}
 

import org.springframework.web.bind.annotation.RequestParam; //导入方法依赖的package包/类
private Object[] resolveInitBinderArguments(Object handler, Method initBinderMethod,
		WebDataBinder binder, NativeWebRequest webRequest) throws Exception {

	Class<?>[] initBinderParams = initBinderMethod.getParameterTypes();
	Object[] initBinderArgs = new Object[initBinderParams.length];

	for (int i = 0; i < initBinderArgs.length; i++) {
		MethodParameter methodParam = new MethodParameter(initBinderMethod, i);
		methodParam.initParameterNameDiscovery(this.parameterNameDiscoverer);
		GenericTypeResolver.resolveParameterType(methodParam, handler.getClass());
		String paramName = null;
		boolean paramRequired = false;
		String paramDefaultValue = null;
		String pathVarName = null;
		Annotation[] paramAnns = methodParam.getParameterAnnotations();

		for (Annotation paramAnn : paramAnns) {
			if (RequestParam.class.isInstance(paramAnn)) {
				RequestParam requestParam = (RequestParam) paramAnn;
				paramName = requestParam.value();
				paramRequired = requestParam.required();
				paramDefaultValue = parseDefaultValueAttribute(requestParam.defaultValue());
				break;
			}
			else if (ModelAttribute.class.isInstance(paramAnn)) {
				throw new IllegalStateException(
						"@ModelAttribute is not supported on @InitBinder methods: " + initBinderMethod);
			}
			else if (PathVariable.class.isInstance(paramAnn)) {
				PathVariable pathVar = (PathVariable) paramAnn;
				pathVarName = pathVar.value();
			}
		}

		if (paramName == null && pathVarName == null) {
			Object argValue = resolveCommonArgument(methodParam, webRequest);
			if (argValue != WebArgumentResolver.UNRESOLVED) {
				initBinderArgs[i] = argValue;
			}
			else {
				Class<?> paramType = initBinderParams[i];
				if (paramType.isInstance(binder)) {
					initBinderArgs[i] = binder;
				}
				else if (BeanUtils.isSimpleProperty(paramType)) {
					paramName = "";
				}
				else {
					throw new IllegalStateException("Unsupported argument [" + paramType.getName() +
							"] for @InitBinder method: " + initBinderMethod);
				}
			}
		}

		if (paramName != null) {
			initBinderArgs[i] =
					resolveRequestParam(paramName, paramRequired, paramDefaultValue, methodParam, webRequest, null);
		}
		else if (pathVarName != null) {
			initBinderArgs[i] = resolvePathVariable(pathVarName, methodParam, webRequest, null);
		}
	}

	return initBinderArgs;
}