/** * 得到参数列表 * * @param method * @param model * @param request * @param response * @param c * @return */ @SuppressWarnings("unchecked") public static Object[] getArgs( Method method, Map<String, Object> model, HttpServletRequest request, HttpServletResponse response, Class<?> c) { Class<?>[] paramTypes = method.getParameterTypes(); Object[] args = new Object[paramTypes.length]; Map<String, Object> argMap = new HashMap<String, Object>(args.length); Map<String, String> pathValues = null; PathPattern pathPattern = method.getAnnotation(PathPattern.class); if (pathPattern != null) { String path = request.getRequestURI(); int index = path.lastIndexOf('.'); if (index != -1) { path = path.substring(0, index); String[] patterns = pathPattern.patterns(); pathValues = getPathValues(patterns, path); } } MapBindingResult errors = new MapBindingResult(argMap, ""); ParameterNameDiscoverer parameterNameDiscoverer = new LocalVariableTableParameterNameDiscoverer(); for (int i = 0; i < paramTypes.length; i++) { Class<?> paramType = paramTypes[i]; MethodParameter methodParam = new MethodParameter(method, i); methodParam.initParameterNameDiscovery(parameterNameDiscoverer); GenericTypeResolver.resolveParameterType(methodParam, c.getClass()); String paramName = methodParam.getParameterName(); // map if (Map.class.isAssignableFrom(paramType)) { args[i] = model; } // HttpServletRequest else if (HttpServletRequest.class.isAssignableFrom(paramType)) { args[i] = request; } // HttpServletResponse else if (HttpServletResponse.class.isAssignableFrom(paramType)) { args[i] = response; } // HttpSession else if (HttpSession.class.isAssignableFrom(paramType)) { args[i] = request.getSession(); } // Errors else if (Errors.class.isAssignableFrom(paramType)) { args[i] = errors; } // MultipartFile else if (MultipartFile.class.isAssignableFrom(paramType)) { MultipartFile[] files = resolveMultipartFiles(request, errors, paramName); if (files != null && files.length > 0) { args[i] = files[0]; } } // MultipartFile[] else if (MultipartFile[].class.isAssignableFrom(paramType)) { args[i] = resolveMultipartFiles(request, errors, paramName); } else { // 简单数据类型 if (BeanUtils.isSimpleProperty(paramType)) { SimpleTypeConverter converter = new SimpleTypeConverter(); Object value; // 是否是数组 if (paramType.isArray()) { value = request.getParameterValues(paramName); } else { Object[] parameterAnnotations = methodParam.getParameterAnnotations(); value = null; if (parameterAnnotations != null && parameterAnnotations.length > 0) { if (pathValues != null && pathValues.size() > 0) { for (Object object : parameterAnnotations) { if (PathVariable.class.isInstance(object)) { PathVariable pv = (PathVariable) object; if (StringUtils.isEmpty(pv.value())) { value = pathValues.get(paramName); } else { value = pathValues.get(pv.value()); } break; } } } } else { value = request.getParameter(paramName); } } try { args[i] = converter.convertIfNecessary(value, paramType, methodParam); model.put(paramName, args[i]); } catch (TypeMismatchException e) { errors.addError(new FieldError(paramName, paramName, e.getMessage())); } } else { // 复杂数据类型POJO类 if (paramType.isArray()) { ObjectArrayDataBinder binder = new ObjectArrayDataBinder(paramType.getComponentType(), paramName); args[i] = binder.bind(request); model.put(paramName, args[i]); } else { Object bindObject = BeanUtils.instantiateClass(paramType); SummerServletRequestDataBinder binder = new SummerServletRequestDataBinder(bindObject, paramName); binder.bind(request); BindException be = new BindException(binder.getBindingResult()); List<FieldError> fieldErrors = be.getFieldErrors(); for (FieldError fieldError : fieldErrors) { errors.addError(fieldError); } args[i] = binder.getTarget(); model.put(paramName, args[i]); } } } } return args; }
public static Object[] createObjectArray(HttpServletRequest request, String name, Class<?> clazz) throws Exception { ObjectArrayDataBinder binder = new ObjectArrayDataBinder(clazz, name); return binder.bind(request); }