C# HttpRouteValueDictionary.Add方法代码示例

        /// <summary>
        /// Map odata route with query string or header constraints
        /// </summary>
        public static void MapODataRoute(
            this HttpRouteCollection routes,
            string routeName,
            string routePrefix,
            IEdmModel model,
            IODataPathHandler pathHandler,
            IEnumerable<IODataRoutingConvention> routingConventions,
            object queryConstraints,
            object headerConstraints)
        {
            if (routes == null)
            {
                throw new ArgumentNullException("routes");
            }

            string routeTemplate = string.IsNullOrEmpty(routePrefix) ? ODataRouteConstants.ODataPathTemplate : (routePrefix + "/" + ODataRouteConstants.ODataPathTemplate);
            ODataVersionRouteConstraint routeConstraint = new ODataVersionRouteConstraint(pathHandler, model, routeName, routingConventions, queryConstraints, headerConstraints);
            var constraints = new HttpRouteValueDictionary();
            constraints.Add(ODataRouteConstants.ConstraintName, routeConstraint);
            routes.MapHttpRoute(
                routeName,
                routeTemplate,
                defaults: null,
                constraints: constraints);
        }

        public static void Register(HttpConfiguration config)
        {
            // Web API 配置和服务

            // Web API 路由
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{action}/{id}",
                defaults: new { id = RouteParameter.Optional }//,
                //constraints:new{sss=new HttpMethodConstraint(HttpMethod.Post)}

            );
            HttpRouteValueDictionary defaults = new HttpRouteValueDictionary();
            //defaults.Add("controller", "Demo");
            //defaults.Add("action", "Get");
            defaults.Add("val", 0);
            HttpRouteValueDictionary constraints = new HttpRouteValueDictionary();
            constraints.Add("val",new DoubleRouteConstraint());

            HttpRoute route = new HttpRoute("customer/{controller}/{action}/{val}", defaults, constraints);

            config.Routes.Add("CustomerApi",route);
        }

        public void Constructor_IsCaseInsensitive()
        {
            // Arrange
            HttpRouteValueDictionary routeValues = new HttpRouteValueDictionary();

            // Act
            routeValues.Add("KEY", null);

            // Assert
            Assert.True(routeValues.ContainsKey("key"));
        }

        public void CreateRoute_ValidatesConstraintType_StringRegex()
        {
            // Arrange
            var routes = new MockHttpRouteCollection();

            var constraint = "product|products";
            var constraints = new HttpRouteValueDictionary();
            constraints.Add("custom", constraint);

            // Act
            var route = routes.CreateRoute("{controller}/{id}", null, constraints);

            // Assert
            Assert.NotNull(route.Constraints["custom"]);
            Assert.Equal(1, routes.TimesValidateConstraintCalled);
        }

        public HttpRouteValueDictionary GetAllRouteValues(PortalAliasInfo portalAliasInfo, object routeValues)
        {
            var allRouteValues = new HttpRouteValueDictionary(routeValues);

            var segments = portalAliasInfo.HTTPAlias.Split('/');
            
            if(segments.Length > 1)
            {
                  for(int i = 1; i < segments.Length; i++)
                  {
                      var key = "prefix" + (i - 1).ToString(CultureInfo.InvariantCulture);
                      var value = segments[i];
                      allRouteValues.Add(key, value);
                  }
            }

            return allRouteValues;
        }

        private static bool MatchContentPathSegment(PathContentSegment routeSegment, string requestPathSegment, HttpRouteValueDictionary defaultValues, HttpRouteValueDictionary matchedValues)
        {
            if (String.IsNullOrEmpty(requestPathSegment))
            {
                // If there's no data to parse, we must have exactly one parameter segment and no other segments - otherwise no match

                if (routeSegment.Subsegments.Count > 1)
                {
                    return false;
                }

                PathParameterSubsegment parameterSubsegment = routeSegment.Subsegments[0] as PathParameterSubsegment;
                if (parameterSubsegment == null)
                {
                    return false;
                }

                // We must have a default value since there's no value in the request URI
                object parameterValue;
                if (defaultValues.TryGetValue(parameterSubsegment.ParameterName, out parameterValue))
                {
                    // If there's a default value for this parameter, use that default value
                    matchedValues.Add(parameterSubsegment.ParameterName, parameterValue);
                    return true;
                }
                else
                {
                    // If there's no default value, this segment doesn't match
                    return false;
                }
            }

            // Find last literal segment and get its last index in the string

            int lastIndex = requestPathSegment.Length;
            int indexOfLastSegmentUsed = routeSegment.Subsegments.Count - 1;

            PathParameterSubsegment parameterNeedsValue = null; // Keeps track of a parameter segment that is pending a value
            PathLiteralSubsegment lastLiteral = null; // Keeps track of the left-most literal we've encountered

            while (indexOfLastSegmentUsed >= 0)
            {
                int newLastIndex = lastIndex;

                PathParameterSubsegment parameterSubsegment = routeSegment.Subsegments[indexOfLastSegmentUsed] as PathParameterSubsegment;
                if (parameterSubsegment != null)
                {
                    // Hold on to the parameter so that we can fill it in when we locate the next literal
                    parameterNeedsValue = parameterSubsegment;
                }
                else
                {
                    PathLiteralSubsegment literalSubsegment = routeSegment.Subsegments[indexOfLastSegmentUsed] as PathLiteralSubsegment;
                    if (literalSubsegment != null)
                    {
                        lastLiteral = literalSubsegment;

                        int startIndex = lastIndex - 1;
                        // If we have a pending parameter subsegment, we must leave at least one character for that
                        if (parameterNeedsValue != null)
                        {
                            startIndex--;
                        }

                        if (startIndex < 0)
                        {
                            return false;
                        }

                        int indexOfLiteral = requestPathSegment.LastIndexOf(literalSubsegment.Literal, startIndex, StringComparison.OrdinalIgnoreCase);
                        if (indexOfLiteral == -1)
                        {
                            // If we couldn't find this literal index, this segment cannot match
                            return false;
                        }

                        // If the first subsegment is a literal, it must match at the right-most extent of the request URI.
                        // Without this check if your route had "/Foo/" we'd match the request URI "/somethingFoo/".
                        // This check is related to the check we do at the very end of this function.
                        if (indexOfLastSegmentUsed == (routeSegment.Subsegments.Count - 1))
                        {
                            if ((indexOfLiteral + literalSubsegment.Literal.Length) != requestPathSegment.Length)
                            {
                                return false;
                            }
                        }

                        newLastIndex = indexOfLiteral;
                    }
                    else
                    {
                        Contract.Assert(false, "Invalid path segment type");
                    }
                }

                if ((parameterNeedsValue != null) && (((lastLiteral != null) && (parameterSubsegment == null)) || (indexOfLastSegmentUsed == 0)))
                {
                    // If we have a pending parameter that needs a value, grab that value

                    int parameterStartIndex;
//.........这里部分代码省略.........

        private static void MatchCatchAll(PathContentSegment contentPathSegment, IEnumerable<string> remainingRequestSegments, HttpRouteValueDictionary defaultValues, HttpRouteValueDictionary matchedValues)
        {
            string remainingRequest = String.Join(String.Empty, remainingRequestSegments.ToArray());

            PathParameterSubsegment catchAllSegment = contentPathSegment.Subsegments[0] as PathParameterSubsegment;

            object catchAllValue;

            if (remainingRequest.Length > 0)
            {
                catchAllValue = remainingRequest;
            }
            else
            {
                defaultValues.TryGetValue(catchAllSegment.ParameterName, out catchAllValue);
            }

            matchedValues.Add(catchAllSegment.ParameterName, catchAllValue);
        }

        public HttpRouteValueDictionary Match(string virtualPath, HttpRouteValueDictionary defaultValues)
        {
            IList<string> requestPathSegments = HttpRouteParser.SplitUriToPathSegmentStrings(virtualPath);

            if (defaultValues == null)
            {
                defaultValues = new HttpRouteValueDictionary();
            }

            HttpRouteValueDictionary matchedValues = new HttpRouteValueDictionary();

            // This flag gets set once all the data in the URI has been parsed through, but
            // the route we're trying to match against still has more parts. At this point
            // we'll only continue matching separator characters and parameters that have
            // default values.
            bool ranOutOfStuffToParse = false;

            // This value gets set once we start processing a catchall parameter (if there is one
            // at all). Once we set this value we consume all remaining parts of the URI into its
            // parameter value.
            bool usedCatchAllParameter = false;

            for (int i = 0; i < _pathSegments.Count; i++)
            {
                PathSegment pathSegment = _pathSegments[i];

                if (requestPathSegments.Count <= i)
                {
                    ranOutOfStuffToParse = true;
                }

                string requestPathSegment = ranOutOfStuffToParse ? null : requestPathSegments[i];

                if (pathSegment is PathSeparatorSegment)
                {
                    if (ranOutOfStuffToParse)
                    {
                        // If we're trying to match a separator in the route but there's no more content, that's OK
                    }
                    else
                    {
                        if (!String.Equals(requestPathSegment, "/", StringComparison.Ordinal))
                        {
                            return null;
                        }
                    }
                }
                else
                {
                    PathContentSegment contentPathSegment = pathSegment as PathContentSegment;
                    if (contentPathSegment != null)
                    {
                        if (contentPathSegment.IsCatchAll)
                        {
                            Contract.Assert(i == (_pathSegments.Count - 1), "If we're processing a catch-all, we should be on the last route segment.");
                            MatchCatchAll(contentPathSegment, requestPathSegments.Skip(i), defaultValues, matchedValues);
                            usedCatchAllParameter = true;
                        }
                        else
                        {
                            if (!MatchContentPathSegment(contentPathSegment, requestPathSegment, defaultValues, matchedValues))
                            {
                                return null;
                            }
                        }
                    }
                    else
                    {
                        Contract.Assert(false, "Invalid path segment type");
                    }
                }
            }

            if (!usedCatchAllParameter)
            {
                if (_pathSegments.Count < requestPathSegments.Count)
                {
                    // If we've already gone through all the parts defined in the route but the URI
                    // still contains more content, check that the remaining content is all separators.
                    for (int i = _pathSegments.Count; i < requestPathSegments.Count; i++)
                    {
                        if (!HttpRouteParser.IsSeparator(requestPathSegments[i]))
                        {
                            return null;
                        }
                    }
                }
            }

            // Copy all remaining default values to the route data
            if (defaultValues != null)
            {
                foreach (var defaultValue in defaultValues)
                {
                    if (!matchedValues.ContainsKey(defaultValue.Key))
                    {
                        matchedValues.Add(defaultValue.Key, defaultValue.Value);
                    }
                }
            }
//.........这里部分代码省略.........

        public BoundRouteTemplate Bind(IDictionary<string, object> currentValues, IDictionary<string, object> values, HttpRouteValueDictionary defaultValues, HttpRouteValueDictionary constraints)
        {
            if (currentValues == null)
            {
                currentValues = new HttpRouteValueDictionary();
            }

            if (values == null)
            {
                values = new HttpRouteValueDictionary();
            }

            if (defaultValues == null)
            {
                defaultValues = new HttpRouteValueDictionary();
            }

            // The set of values we should be using when generating the URI in this route
            HttpRouteValueDictionary acceptedValues = new HttpRouteValueDictionary();

            // Keep track of which new values have been used
            HashSet<string> unusedNewValues = new HashSet<string>(values.Keys, StringComparer.OrdinalIgnoreCase);

            // Step 1: Get the list of values we're going to try to use to match and generate this URI

            // Find out which entries in the URI are valid for the URI we want to generate.
            // If the URI had ordered parameters a="1", b="2", c="3" and the new values
            // specified that b="9", then we need to invalidate everything after it. The new
            // values should then be a="1", b="9", c=<no value>.
            ForEachParameter(_pathSegments, delegate(PathParameterSubsegment parameterSubsegment)
            {
                // If it's a parameter subsegment, examine the current value to see if it matches the new value
                string parameterName = parameterSubsegment.ParameterName;

                object newParameterValue;
                bool hasNewParameterValue = values.TryGetValue(parameterName, out newParameterValue);
                if (hasNewParameterValue)
                {
                    unusedNewValues.Remove(parameterName);
                }

                object currentParameterValue;
                bool hasCurrentParameterValue = currentValues.TryGetValue(parameterName, out currentParameterValue);

                if (hasNewParameterValue && hasCurrentParameterValue)
                {
                    if (!RoutePartsEqual(currentParameterValue, newParameterValue))
                    {
                        // Stop copying current values when we find one that doesn't match
                        return false;
                    }
                }

                // If the parameter is a match, add it to the list of values we will use for URI generation
                if (hasNewParameterValue)
                {
                    if (IsRoutePartNonEmpty(newParameterValue))
                    {
                        acceptedValues.Add(parameterName, newParameterValue);
                    }
                }
                else
                {
                    if (hasCurrentParameterValue)
                    {
                        acceptedValues.Add(parameterName, currentParameterValue);
                    }
                }
                return true;
            });

            // Add all remaining new values to the list of values we will use for URI generation
            foreach (var newValue in values)
            {
                if (IsRoutePartNonEmpty(newValue.Value))
                {
                    if (!acceptedValues.ContainsKey(newValue.Key))
                    {
                        acceptedValues.Add(newValue.Key, newValue.Value);
                    }
                }
            }

            // Add all current values that aren't in the URI at all
            foreach (var currentValue in currentValues)
            {
                string parameterName = currentValue.Key;
                if (!acceptedValues.ContainsKey(parameterName))
                {
                    PathParameterSubsegment parameterSubsegment = GetParameterSubsegment(_pathSegments, parameterName);
                    if (parameterSubsegment == null)
                    {
                        acceptedValues.Add(parameterName, currentValue.Value);
                    }
                }
            }

            // Add all remaining default values from the route to the list of values we will use for URI generation
            ForEachParameter(_pathSegments, delegate(PathParameterSubsegment parameterSubsegment)
            {
//.........这里部分代码省略.........

        private static string GetHttpRouteHelper(HttpRequestMessage request, string routeName, IDictionary<string, object> routeValues)
        {
            if (routeValues == null)
            {
                // If no route values were passed in at all we have to create a new dictionary
                // so that we can add the extra "httproute" key.
                routeValues = new HttpRouteValueDictionary();
                routeValues.Add(HttpRoute.HttpRouteKey, true);
            }
            else
            {
                // Copy the dictionary so that we can guarantee that routeValues uses an OrdinalIgnoreCase comparer
                // and to add the extra "httproute" key used by all Web API routes to disambiguate them from other MVC routes.
                routeValues = new HttpRouteValueDictionary(routeValues);
                if (!routeValues.ContainsKey(HttpRoute.HttpRouteKey))
                {
                    routeValues.Add(HttpRoute.HttpRouteKey, true);
                }
            }

            HttpConfiguration configuration = request.GetConfiguration();
            if (configuration == null)
            {
                throw Error.InvalidOperation(SRResources.HttpRequestMessageExtensions_NoConfiguration);
            }

            IHttpVirtualPathData vpd = configuration.Routes.GetVirtualPath(
                request: request,
                name: routeName,
                values: routeValues);
            if (vpd == null)
            {
                return null;
            }
            return vpd.VirtualPath;
        }

 private static bool MatchSingleContentPathSegment(PathSubsegment pathSubsegment, string requestPathSegment, HttpRouteValueDictionary matchedValues)
 {
     PathParameterSubsegment parameterSubsegment = pathSubsegment as PathParameterSubsegment;
     if (parameterSubsegment == null)
     {
         // Handle a single literal segment
         PathLiteralSubsegment literalSubsegment = pathSubsegment as PathLiteralSubsegment;
         Contract.Assert(literalSubsegment != null, "Invalid path segment type");
         return literalSubsegment.Literal.Equals(requestPathSegment, StringComparison.OrdinalIgnoreCase);
     }
     else
     {
         // Handle a single parameter segment
         matchedValues.Add(parameterSubsegment.ParameterName, requestPathSegment);
         return true;
     }
 }

		private static HttpRouteValueDictionary BuildHttpRouteValueDictionary(IEnumerable<RouteConfigurationParameter> defaultParameters)
		{
			var result = new HttpRouteValueDictionary();

			foreach (var defaultParameter in defaultParameters)
			{
				var value = defaultParameter.IsOptional
					? RouteParameter.Optional
					: defaultParameter.Value;

				result.Add(defaultParameter.Name, value);
			}

			return result;
		}

        /// <summary>
        /// Builds an <see cref="IHttpRoute"/> for a particular action.
        /// </summary>
        /// <param name="routeTemplate">The tokenized route template for the route.</param>
        /// <param name="httpMethods">The HTTP methods supported by the route.</param>
        /// <param name="controllerName">The name of the associated controller.</param>
        /// <param name="actionName">The name of the associated action.</param>
        /// <returns>The generated <see cref="IHttpRoute"/>.</returns>
        public virtual IHttpRoute BuildHttpRoute(string routeTemplate, IEnumerable<HttpMethod> httpMethods, string controllerName, string actionName)
        {
            if (routeTemplate == null)
            {
                throw Error.ArgumentNull("routeTemplate");
            }

            if (controllerName == null)
            {
                throw Error.ArgumentNull("controllerName");
            }

            if (actionName == null)
            {
                throw Error.ArgumentNull("actionName");
            }

            HttpRouteValueDictionary defaults = new HttpRouteValueDictionary
            {
                { "controller", controllerName },
                { "action", actionName }
            };

            HttpRouteValueDictionary constraints = new HttpRouteValueDictionary();
            if (httpMethods != null)
            {
                // Current method constraint implementation is inefficient since it matches before running the constraint.
                // Consider checking the HTTP method first in a custom route as a performance optimization.
                constraints.Add("httpMethod", new HttpMethodConstraint(httpMethods.ToArray()));
            }

            string detokenizedRouteTemplate = ParseRouteTemplate(routeTemplate, defaults, constraints);

            return BuildHttpRoute(defaults, constraints, detokenizedRouteTemplate);
        }

        private string ParseRouteTemplate(string routeTemplate, HttpRouteValueDictionary defaults, HttpRouteValueDictionary constraints)
        {
            Contract.Assert(defaults != null);
            Contract.Assert(constraints != null);

            MatchCollection parameterMatches = _parameterRegex.Matches(routeTemplate);

            foreach (Match parameterMatch in parameterMatches)
            {
                string parameterName = parameterMatch.Groups["parameterName"].Value;
                // We may need to strip out the initial wildcard used for wildcard parameters
                if (parameterName.StartsWith("*", StringComparison.OrdinalIgnoreCase))
                {
                    parameterName = parameterName.Substring(1);
                }

                // Add the default value if present
                Group defaultValueGroup = parameterMatch.Groups["defaultValue"];
                object defaultValue = GetDefaultValue(defaultValueGroup);
                if (defaultValue != null)
                {
                    defaults.Add(parameterName, defaultValue);
                }

                // Register inline constraints if present
                Group constraintGroup = parameterMatch.Groups["constraint"];
                bool isOptional = defaultValue == RouteParameter.Optional;
                IHttpRouteConstraint constraint = GetInlineConstraint(constraintGroup, isOptional);
                if (constraint != null)
                {
                    constraints.Add(parameterName, constraint);
                }
            }                 
            
            // Replaces parameter matches with just the parameter name in braces
            // Strips out the optional '?', default value, inline constraints
            return _parameterRegex.Replace(routeTemplate, @"{${parameterName}}");
        }

        public void CreateRoute_ValidatesConstraintType_InvalidType()
        {
            // Arrange
            var routes = new HttpRouteCollection();

            var constraint = new Uri("http://localhost/");
            var constraints = new HttpRouteValueDictionary();
            constraints.Add("custom", constraint);

            string expectedMessage =
                "The constraint entry 'custom' on the route with route template '{controller}/{id}' " +
                "must have a string value or be of a type which implements 'System.Web.Http.Routing.IHttpRouteConstraint'.";

            // Act & Assert
            Assert.Throws<InvalidOperationException>(() => routes.CreateRoute("{controller}/{id}", null, constraints), expectedMessage);
        }