C#中利用序列换解析Json.doc

C#中使用JSON不需要使用第三方库，使用.NET Framwork3.5自带的System.Runtime.Serialization.Json即可很好的完成JSON的解析。一、Using需要添加引用：System.ServiceModel.Web 和 System.Runtime.Serialization，然后使用Using：usingSystem.Runtime.Serialization.Json;usingSystem.Runtime.Serialization;二、定义序列化的类假如我们要转化的JSON字符串格式为：encoding:UTF-8,plug-ins:python,c+,ruby,indent:length:3,use_space:true然后编写相应的序列化的类，注意下面类加的Attribute：DataContract(Namespace=)classConfigDataMember(Order=0)publicstringencodingget;set;DataMember(Order=1)publicstringpluginsget;set;DataMember(Order=2)publicIndentindentget;set;DataContract(Namespace=)classIndentDataMember(Order=0)publicintlengthget;set;DataMember(Order=1)publicbooluse_spaceget;set;三、对象转化为JSON字符串使用WriteObject方法：varconfig=newConfig()encoding=UTF-8,plugins=newstringpython,C+,C#,indent=newIndent()length=4,use_space=false;varserializer=newDataContractJsonSerializer(typeof(Config);varstream=newMemoryStream();serializer.WriteObject(stream,config);bytedataBytes=newbytestream.Length;stream.Position=0;stream.Read(dataBytes,0,(int)stream.Length);stringdataString=Encoding.UTF8.GetString(dataBytes);Console.WriteLine(JSONstringis:);Console.WriteLine(dataString);四、JSON字符串转对象使用ReadObject方法：varmStream=newMemoryStream(Encoding.Default.GetBytes(dataString);ConfigreadConfig=(Config)serializer.ReadObject(mStream);Console.WriteLine(Encodingis:0,readConfig.encoding);foreach(stringplugininreadConfig.plugins)Console.WriteLine(pluginsis:0,plugin);Console.WriteLine(indent.lengthis:0,readConfig.indent.length);Console.WriteLine(indent.use_spaceis:0,readConfig.indent.use_space);五、输出结果：JSONstringis:encoding:UTF-8,plugins:python,C+,C#,indent:length:4,use_space:falseEncodingis:UTF-8pluginsis:pythonpluginsis:C+pluginsis:C#indent.lengthis:4indent.use_spaceis:Falsepublic List poisPoints = new List(); /根据关键词检索某一城市区域内的信息，如检索北京市的的饭店 public List SearchPlace(string keywords, string region) Uri uri = new Uri(/place/v2/search?&q= + keywords + ®ion= + region + &scope=2&page_size=20&output=json&ak=TzXl9IchG73tz12UjrhuO1kA);/记住使用自己的ak WebClient wc = new WebClient(); wc.OpenReadCompleted += new OpenReadCompletedEventHandler(wc_OpenReadCompleted); wc.OpenReadAsync(uri); return poisPoints; /重载SearchPlace方法，根据关键词检索某一矩形区域内的信息,矩形区域由左下角和右上角的经纬度坐标值定义lat为纬度值，lng为经度值 如39.915,116.404,39.975,116.414 public List SearchPlace(string keywords, string leftDownLat, string leftDownLng, string rightUpLat, string rightUpLng) Uri uri = new Uri(/place/v2/search?&query= + keywords + &bounds= + leftDownLat + , + leftDownLng + , + rightUpLat + , + rightUpLng + &scope=2&output=json&ak=TzXl9IchG73tz12UjrhuO1kA);/记住使用自己的ak WebClient wc = new WebClient(); wc.OpenReadCompleted += new OpenReadCompletedEventHandler(wc_OpenReadCompleted); wc.OpenReadAsync(uri); return poisPoints; /重载SearchPlace方法，根据关键词检索某一圆形区域内的信息，圆形区域由中心点的经纬度以及半径（单位为米）决定,半径最大为2000米 public List SearchPlace(string keywords, string centerLat, string centerLng, string searchRadius) Uri uri = new Uri(/place/v2/search?&query= + keywords + &location= + centerLat + , + centerLng + &radius= + searchRadius + &output=json&scope=2&ak=TzXl9IchG73tz12UjrhuO1kA);/记住使用自己的ak WebClient wc = new WebClient(); wc.OpenReadCompleted += new OpenReadCompletedEventHandler(wc_OpenReadCompleted); wc.OpenReadAsync(uri); return poisPoints; public void wc_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e) DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(SearchPlace); SearchPlace RC = (SearchPlace)serializer.ReadObject(e.Result);/ RestaurantClass为根据json数据结构创建的类 foreach (SinglePlace sp in RC.results) string info = name: + + n + address= + sp.address + n + street_id= + sp.street_id + n + telephone= + sp.telephone + n + uid= + sp.uid + n + lng= + sp.location.lng + lat= + sp.location.lat + n + distance= + sp.detail_info.distance + type= + sp.detail_info.type + tag= + sp.detail_info.tag + detail_url= + sp.detail_info.detail_url + price= + sp.detail_info.price + shop_hours= + sp.detail_info.shop_hours + overall_rating= + sp.detail_info.overall_rating + hygiene_rating= + sp.detail_info.hygiene_rating + taste_rating= + sp.detail_info.taste_rating + service_rating= + sp.detail_info.service_rating + environment_rating= + sp.detail_info.environment_rating + facility_rating= + sp.detail_info.facility_rating + technology_rating= + sp.detail_info.technology_rating + image_num= + sp.detail_info.image_num + group_num= + sp.detail_info.groupon_num + discout_num= + sp.detail_info.groupon_num + comment_num= + sp.detail_ment_num + favorite_num= + sp.detail_ment_num + checkin_num= + sp.detail_info.checkin_num; Graphic graphic = new Graphic(); graphic.Geometry = new MapPoint(sp.location.lng, sp.location.lat); graphic.Symbol = LayoutRoot.Resourcespointsymbol as Symbol; /将得到的信息都加到graphic的属性字段里面去 graphic.Attributes.Add(name, ); graphic.Attributes.Add(address, sp.address); graphic.Attributes.Add(street_id, sp.street_id); graphic.Attributes.Add(telephone, sp.telephone); graphic.Attributes.Add(uid, sp.uid); graphic.Attributes.Add(lng, sp.location.lng); graphic.Attributes.Add(lat, sp.location.lat); graphic.Attributes.Add(distance, sp.detail_info.distance); graphic.Attributes.Add(type, sp.detail_info.type); graphic.Attributes.Add(tag, sp.detail_info.tag); graphic.Attributes.Add(detail_url, sp.detail_info.detail_url); graphic.Attributes.Add(price, sp.detail_info.price); graphic.Attributes.Add(shop_hours, sp.detail_info.shop_hours); graphic.Attributes.Add(overall_rating, sp.detail_info.overall_rating); graphic.Attributes.Add(hygiene_rating, sp.detail_info.hygiene_rating); graphic.Attributes.Add(taste_rating, sp.detail_info.taste_rating); graphic.Attributes.Add(service_rating, sp.detail_info.service_rating); graphic.Attributes.Add(environment_rating, sp.detail_info.environment_rating); graphic.Attributes.Add(facility_rating, sp.detail_info.facility_rating); graphic.Attributes.Add(technology_rating, sp.detail_info.technology_rating); graphic.Attributes.Add(image_num, sp.detail_info.image_num); graphic.Attributes.Add(groupon_num, sp.detail_info.groupon_num); graphic.Attributes.Add(discount_num, sp.detail_info.discount_num); graphic.Attributes.Add(comment_num, sp.detail_ment_num); graphic.Attributes.Add(checkin_num, sp.detail_info.checkin_num); poisPoints.Add(graphic); public class SearchPlace public SearchPlace(int status, string message, SinglePlace results) this.status = status; this.message = message; this.results = results; DataMember /此处一定要加这个，指明json反序列化之后的类中的成员或属性 public int statusget;set; DataMember public string messageget;set; DataMember public SinglePlace results get; set; DataContract public class SinglePlace public SinglePlace(string name, PlaceLocation location, string address, string street_id, string telephone, string uid, DetailInfo detail_info) = name; this.location = location; this.address = address; this.street_id = street_id; this.telephone = telephone; this.uid = uid; this.detail_info = detail_info; DataMember public string nameget;set; DataMember public PlaceLocation location get; set; DataMember public string addressget;set; DataMember public string street_idget;set; DataMember public string telephoneget;set; DataMember public string uidget;set; DataMember public DetailInfo detail_info get; set; DataContract public class PlaceLocation public PlaceLocation(double lat,double lng) this.lat = lat; this.lng = lng; DataMember public double latget;set; DataMember public double lngget;set; DataContract public class DetailInfo public DetailInfo(int distance, string type, string tag, string detail_url, string price, string shop_hours, string overall_rating, string taste_rating, string service_rating, string environment_rating, string facility_rating, string hygiene_rating, string technology_rating, string image_num, int group_num, int discount_num, string comment_num, string favorite_num, string chechin_num) this.distance = distance;/距离中心点的距离 this.type = type;/所属分类，如“hotel”、“cater” this.tag = tag;/标签 this.detail_url = detail_url;/poi的详情页 this.price = price;/poi的价格 this.shop_hours = shop_hours;/营业时间 this.overall_rating = overall_rating;/总体评分 this.taste_rating = taste_rating;/口味评分 this.service_rating = service_rating;/服务评分 this.environment_rating = environment_rating;/环境评分 this.facility_rating = facility_rating;/星级（设备）评分 this.hygiene_rating = hygiene_rating;/卫生评分 this.technology_rating = technology_rating;/技术评分 this.image_num = image_num;/图片数 this.groupon_num = groupon_num;/团购数 this.discount_num = discount_num;/优惠数 ment_num = comment_num;/评论uu this.favorite_num = favorite_num;/收藏数 this.checkin_num = checkin_num;/签到数 DataMember public int distance get; set; DataMember public string type get; set; DataMember public string tag get; set; DataMember public string detail_url get; set; DataMember public string price get; set; DataMember public string shop_hours get; set; DataMember public string overall_rating get; set; DataMember public string taste_rating get; set; DataMember public string service_rating get; set; DataMember public string environment_rating get; set; DataMember public string facility_rating get; set; DataMember public string hygiene_rating get; set; DataMember public string technology_rating get; set; DataMember public string image_num get; set; DataMember public int groupon_num get; set; DataMember public string comment_num get; set; DataMember public int discount_num get; set; DataMember public string favorite_num get; set; DataMember public string checkin_num get; set; WebClient wb = new Web