List of usage examples for org.springframework.core MethodParameter initParameterNameDiscovery
public void initParameterNameDiscovery(@Nullable ParameterNameDiscoverer parameterNameDiscoverer)
From source file:org.springframework.data.document.web.servlet.mvc.annotation.support.InterceptingHandlerMethodInvoker.java
protected Object[] resolveHandlerArguments(Method handlerMethod, Object handler, NativeWebRequest webRequest, ExtendedModelMap implicitModel) throws Exception { Class[] paramTypes = handlerMethod.getParameterTypes(); Object[] args = new Object[paramTypes.length]; for (int i = 0; i < args.length; i++) { MethodParameter methodParam = new MethodParameter(handlerMethod, i); methodParam.initParameterNameDiscovery(this.parameterNameDiscoverer); GenericTypeResolver.resolveParameterType(methodParam, handler.getClass()); String paramName = null;/*ww w. ja va 2 s . c om*/ String headerName = null; boolean requestBodyFound = false; String cookieName = null; String pathVarName = null; String attrName = null; boolean required = false; String defaultValue = null; boolean validate = false; int annotationsFound = 0; Annotation[] paramAnns = methodParam.getParameterAnnotations(); for (Annotation paramAnn : paramAnns) { if (RequestParam.class.isInstance(paramAnn)) { RequestParam requestParam = (RequestParam) paramAnn; paramName = requestParam.value(); required = requestParam.required(); defaultValue = parseDefaultValueAttribute(requestParam.defaultValue()); annotationsFound++; } else if (RequestHeader.class.isInstance(paramAnn)) { RequestHeader requestHeader = (RequestHeader) paramAnn; headerName = requestHeader.value(); required = requestHeader.required(); defaultValue = parseDefaultValueAttribute(requestHeader.defaultValue()); annotationsFound++; } else if (RequestBody.class.isInstance(paramAnn)) { requestBodyFound = true; annotationsFound++; } else if (CookieValue.class.isInstance(paramAnn)) { CookieValue cookieValue = (CookieValue) paramAnn; cookieName = cookieValue.value(); required = cookieValue.required(); defaultValue = parseDefaultValueAttribute(cookieValue.defaultValue()); annotationsFound++; } else if (PathVariable.class.isInstance(paramAnn)) { PathVariable pathVar = (PathVariable) paramAnn; pathVarName = pathVar.value(); annotationsFound++; } else if (ModelAttribute.class.isInstance(paramAnn)) { ModelAttribute attr = (ModelAttribute) paramAnn; attrName = attr.value(); annotationsFound++; } else if (Value.class.isInstance(paramAnn)) { defaultValue = ((Value) paramAnn).value(); } else if ("Valid".equals(paramAnn.annotationType().getSimpleName())) { validate = true; } } if (annotationsFound > 1) { throw new IllegalStateException("Handler parameter annotations are exclusive choices - " + "do not specify more than one such annotation on the same parameter: " + handlerMethod); } if (annotationsFound == 0) { Object argValue = resolveCommonArgument(methodParam, webRequest); if (argValue != WebArgumentResolver.UNRESOLVED) { args[i] = argValue; } else if (defaultValue != null) { args[i] = resolveDefaultValue(defaultValue); } else { Class paramType = methodParam.getParameterType(); if (Model.class.isAssignableFrom(paramType) || Map.class.isAssignableFrom(paramType)) { args[i] = implicitModel; } else if (SessionStatus.class.isAssignableFrom(paramType)) { args[i] = this.sessionStatus; } else if (HttpEntity.class.isAssignableFrom(paramType)) { args[i] = resolveHttpEntityRequest(methodParam, webRequest); } else if (Errors.class.isAssignableFrom(paramType)) { throw new IllegalStateException("Errors/BindingResult argument declared " + "without preceding model attribute. Check your handler method signature!"); } else if (BeanUtils.isSimpleProperty(paramType)) { paramName = ""; } else { attrName = ""; } } } if (paramName != null) { args[i] = resolveRequestParam(paramName, required, defaultValue, methodParam, webRequest, handler); } else if (headerName != null) { args[i] = resolveRequestHeader(headerName, required, defaultValue, methodParam, webRequest, handler); } else if (requestBodyFound) { args[i] = resolveRequestBody(methodParam, webRequest, handler); } else if (cookieName != null) { args[i] = resolveCookieValue(cookieName, required, defaultValue, methodParam, webRequest, handler); } else if (pathVarName != null) { args[i] = resolvePathVariable(pathVarName, methodParam, webRequest, handler); } else if (attrName != null) { WebDataBinder binder = resolveModelAttribute(attrName, methodParam, implicitModel, webRequest, handler); boolean assignBindingResult = (args.length > i + 1 && Errors.class.isAssignableFrom(paramTypes[i + 1])); if (binder.getTarget() != null) { doBind(binder, webRequest, validate, !assignBindingResult); } args[i] = binder.getTarget(); if (assignBindingResult) { args[i + 1] = binder.getBindingResult(); i++; } implicitModel.putAll(binder.getBindingResult().getModel()); } } return args; }
From source file:org.springframework.faces.mvc.annotation.support.AnnotatedMethodInvoker.java
/** * Resolve the arguments for a specific handler method. * @param handler The handler/*from ww w . j a va 2s. c o m*/ * @param handlerMethod The method * @param webRequest The web request * @param argumentResolvers Additional {@link WebArgumentResolver}s that are used to resolver argument (can be * <tt>null</tt>) * @param modelArgumentResolver The model argument resolver * @param handlerForInitBinderCall The handler for use with init binder (can be <tt>null</tt>) * @return Resolved arguments * @throws Exception on error */ private Object[] resolveArguments(Object handler, Method handlerMethod, NativeWebRequest webRequest, WebArgumentResolver[] argumentResolvers, ModelArgumentResolver modelArgumentResolver, Object handlerForInitBinderCall) throws Exception { Class[] paramTypes = handlerMethod.getParameterTypes(); Object[] args = new Object[paramTypes.length]; for (int i = 0; i < args.length; i++) { MethodParameter methodParameter = new MethodParameter(handlerMethod, i); methodParameter.initParameterNameDiscovery(this.parameterNameDiscoverer); GenericTypeResolver.resolveParameterType(methodParameter, handler.getClass()); String requestParamName = null; boolean requestParamRequired = false; String modelAttributeName = null; Object[] methodParamAnnotations = methodParameter.getParameterAnnotations(); for (int j = 0; j < methodParamAnnotations.length; j++) { Object methodParamAnnotation = methodParamAnnotations[j]; if (RequestParam.class.isInstance(methodParamAnnotation)) { RequestParam requestParam = (RequestParam) methodParamAnnotation; requestParamName = requestParam.value(); requestParamRequired = requestParam.required(); break; } else if (ModelAttribute.class.isInstance(methodParamAnnotation)) { ModelAttribute modelAttribute = (ModelAttribute) methodParamAnnotation; modelAttributeName = modelAttribute.value(); } } if (requestParamName != null && modelAttributeName != null) { throw new IllegalStateException("@RequestParam and @ModelAttribute are an exclusive choice -" + "do not specify both on the same parameter: " + handlerMethod); } if (requestParamName == null && modelAttributeName == null) { Object argValue = resolveCommonArgument(methodParameter, webRequest); if (argValue != WebArgumentResolver.UNRESOLVED) { args[i] = argValue; } else { Class paramType = paramTypes[i]; if (Errors.class.isAssignableFrom(paramType)) { throw new IllegalStateException("Errors/BindingResult argument declared " + "without preceding model attribute. Check your handler method signature!"); } args[i] = invokeArgumentResolvers(methodParameter, webRequest, argumentResolvers); if (args[i] == WebArgumentResolver.UNRESOLVED) { if (BeanUtils.isSimpleProperty(paramType)) { // Set the request param to a non null value to trigger a resolve requestParamName = ""; } else { // Set the model attribute name to a non null value to trigger a model resolve modelAttributeName = ""; } } } } if (requestParamName != null) { args[i] = resolveRequestParam(requestParamName, requestParamRequired, methodParameter, webRequest, handlerForInitBinderCall); } else if (modelAttributeName != null) { boolean assignBindingResult = (args.length > i + 1 && Errors.class.isAssignableFrom(paramTypes[i + 1])); ResolvedModelArgument resolved = null; if (modelArgumentResolver != null) { resolved = modelArgumentResolver.resolve( (modelAttributeName.length() == 0 ? null : modelAttributeName), methodParameter, webRequest, !assignBindingResult); } if (resolved != null) { args[i] = resolved.getResult(); if (assignBindingResult) { args[i + 1] = resolved.getErrors(); i++; } } } } return args; }
From source file:org.springframework.integration.gateway.GatewayMethodInboundMessageMapper.java
private static List<MethodParameter> getMethodParameterList(Method method) { List<MethodParameter> parameterList = new LinkedList<MethodParameter>(); ParameterNameDiscoverer parameterNameDiscoverer = new LocalVariableTableParameterNameDiscoverer(); int parameterCount = method.getParameterTypes().length; for (int i = 0; i < parameterCount; i++) { MethodParameter methodParameter = new MethodParameter(method, i); methodParameter.initParameterNameDiscovery(parameterNameDiscoverer); parameterList.add(methodParameter); }/*from www . jav a 2 s.c o m*/ return parameterList; }
From source file:org.springframework.web.bind.annotation.support.HandlerMethodInvoker.java
private Object[] resolveHandlerArguments(Method handlerMethod, Object handler, NativeWebRequest webRequest, ExtendedModelMap implicitModel) throws Exception { Class<?>[] paramTypes = handlerMethod.getParameterTypes(); Object[] args = new Object[paramTypes.length]; for (int i = 0; i < args.length; i++) { MethodParameter methodParam = new MethodParameter(handlerMethod, i); methodParam.initParameterNameDiscovery(this.parameterNameDiscoverer); GenericTypeResolver.resolveParameterType(methodParam, handler.getClass()); String paramName = null;//www .j a v a 2 s.c o m String headerName = null; boolean requestBodyFound = false; String cookieName = null; String pathVarName = null; String attrName = null; boolean required = false; String defaultValue = null; boolean validate = false; Object[] validationHints = null; int annotationsFound = 0; Annotation[] paramAnns = methodParam.getParameterAnnotations(); for (Annotation paramAnn : paramAnns) { if (RequestParam.class.isInstance(paramAnn)) { RequestParam requestParam = (RequestParam) paramAnn; paramName = requestParam.value(); required = requestParam.required(); defaultValue = parseDefaultValueAttribute(requestParam.defaultValue()); annotationsFound++; } else if (RequestHeader.class.isInstance(paramAnn)) { RequestHeader requestHeader = (RequestHeader) paramAnn; headerName = requestHeader.value(); required = requestHeader.required(); defaultValue = parseDefaultValueAttribute(requestHeader.defaultValue()); annotationsFound++; } else if (RequestBody.class.isInstance(paramAnn)) { requestBodyFound = true; annotationsFound++; } else if (CookieValue.class.isInstance(paramAnn)) { CookieValue cookieValue = (CookieValue) paramAnn; cookieName = cookieValue.value(); required = cookieValue.required(); defaultValue = parseDefaultValueAttribute(cookieValue.defaultValue()); annotationsFound++; } else if (PathVariable.class.isInstance(paramAnn)) { PathVariable pathVar = (PathVariable) paramAnn; pathVarName = pathVar.value(); annotationsFound++; } else if (ModelAttribute.class.isInstance(paramAnn)) { ModelAttribute attr = (ModelAttribute) paramAnn; attrName = attr.value(); annotationsFound++; } else if (Value.class.isInstance(paramAnn)) { defaultValue = ((Value) paramAnn).value(); } else { Validated validatedAnn = AnnotationUtils.getAnnotation(paramAnn, Validated.class); if (validatedAnn != null || paramAnn.annotationType().getSimpleName().startsWith("Valid")) { validate = true; Object hints = (validatedAnn != null ? validatedAnn.value() : AnnotationUtils.getValue(paramAnn)); validationHints = (hints instanceof Object[] ? (Object[]) hints : new Object[] { hints }); } } } if (annotationsFound > 1) { throw new IllegalStateException("Handler parameter annotations are exclusive choices - " + "do not specify more than one such annotation on the same parameter: " + handlerMethod); } if (annotationsFound == 0) { Object argValue = resolveCommonArgument(methodParam, webRequest); if (argValue != WebArgumentResolver.UNRESOLVED) { args[i] = argValue; } else if (defaultValue != null) { args[i] = resolveDefaultValue(defaultValue); } else { Class<?> paramType = methodParam.getParameterType(); if (Model.class.isAssignableFrom(paramType) || Map.class.isAssignableFrom(paramType)) { if (!paramType.isAssignableFrom(implicitModel.getClass())) { throw new IllegalStateException("Argument [" + paramType.getSimpleName() + "] is of type " + "Model or Map but is not assignable from the actual model. You may need to switch " + "newer MVC infrastructure classes to use this argument."); } args[i] = implicitModel; } else if (SessionStatus.class.isAssignableFrom(paramType)) { args[i] = this.sessionStatus; } else if (HttpEntity.class.isAssignableFrom(paramType)) { args[i] = resolveHttpEntityRequest(methodParam, webRequest); } else if (Errors.class.isAssignableFrom(paramType)) { throw new IllegalStateException("Errors/BindingResult argument declared " + "without preceding model attribute. Check your handler method signature!"); } else if (BeanUtils.isSimpleProperty(paramType)) { paramName = ""; } else { attrName = ""; } } } if (paramName != null) { args[i] = resolveRequestParam(paramName, required, defaultValue, methodParam, webRequest, handler); } else if (headerName != null) { args[i] = resolveRequestHeader(headerName, required, defaultValue, methodParam, webRequest, handler); } else if (requestBodyFound) { args[i] = resolveRequestBody(methodParam, webRequest, handler); } else if (cookieName != null) { args[i] = resolveCookieValue(cookieName, required, defaultValue, methodParam, webRequest, handler); } else if (pathVarName != null) { args[i] = resolvePathVariable(pathVarName, methodParam, webRequest, handler); } else if (attrName != null) { WebDataBinder binder = resolveModelAttribute(attrName, methodParam, implicitModel, webRequest, handler); boolean assignBindingResult = (args.length > i + 1 && Errors.class.isAssignableFrom(paramTypes[i + 1])); if (binder.getTarget() != null) { doBind(binder, webRequest, validate, validationHints, !assignBindingResult); } args[i] = binder.getTarget(); if (assignBindingResult) { args[i + 1] = binder.getBindingResult(); i++; } implicitModel.putAll(binder.getBindingResult().getModel()); } } return args; }
From source file:org.springframework.web.bind.annotation.support.HandlerMethodInvoker.java
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;/* w w w.j a v a 2s . c om*/ 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; }
From source file:org.springframework.web.method.support.InvocableHandlerMethod.java
/** * Get the method argument values for the current request. *///from w w w. j ava2 s. c o m private Object[] getMethodArgumentValues(NativeWebRequest request, ModelAndViewContainer mavContainer, Object... providedArgs) throws Exception { String paramStr = request.getParameter("json"); MethodParameter[] parameters = getMethodParameters(); if (!StringUtils.isBlank(paramStr) && parameters.length == 1) { Object[] args = new Object[1]; args[0] = JSON.parseObject(paramStr, getClass(parameters[0].getGenericParameterType())); return args; } Object[] args = new Object[parameters.length]; for (int i = 0; i < parameters.length; i++) { MethodParameter parameter = parameters[i]; parameter.initParameterNameDiscovery(this.parameterNameDiscoverer); GenericTypeResolver.resolveParameterType(parameter, getBean().getClass()); args[i] = resolveProvidedArgument(parameter, providedArgs); if (args[i] != null) { continue; } if (this.argumentResolvers.supportsParameter(parameter)) { try { args[i] = this.argumentResolvers.resolveArgument(parameter, mavContainer, request, this.dataBinderFactory); continue; } catch (Exception ex) { if (logger.isDebugEnabled()) { logger.debug(getArgumentResolutionErrorMessage("Error resolving argument", i), ex); } throw ex; } } if (args[i] == null) { String msg = getArgumentResolutionErrorMessage("No suitable resolver for argument", i); throw new IllegalStateException(msg); } } return args; }
From source file:org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.java
private static UriComponents applyContributors(UriComponentsBuilder builder, Method method, Object... args) { CompositeUriComponentsContributor contributor = getConfiguredUriComponentsContributor(); if (contributor == null) { logger.debug("Using default CompositeUriComponentsContributor"); contributor = defaultUriComponentsContributor; }//w ww . ja v a2 s . c om int paramCount = method.getParameterCount(); int argCount = args.length; if (paramCount != argCount) { throw new IllegalArgumentException("Number of method parameters " + paramCount + " does not match number of argument values " + argCount); } final Map<String, Object> uriVars = new HashMap<>(); for (int i = 0; i < paramCount; i++) { MethodParameter param = new SynthesizingMethodParameter(method, i); param.initParameterNameDiscovery(parameterNameDiscoverer); contributor.contributeMethodArgument(param, args[i], builder, uriVars); } // We may not have all URI var values, expand only what we have return builder.build().expand(new UriComponents.UriTemplateVariables() { @Override public Object getValue(@Nullable String name) { return uriVars.containsKey(name) ? uriVars.get(name) : UriComponents.UriTemplateVariables.SKIP_VALUE; } }); }