using System; using System.Linq; using System.Collections.Generic; namespace microstore { public interface IPerson { string FirstName { get; set; } string LastName { get; set; } DateTime BirthDate { get; set; } } public class Employee : IPerson { public string FirstName { get; set; } public string LastName { get; set; } public DateTime BirthDate { get; set; } public string Department { get; set; } public string JobTitle { get; set; } } public class PersonConverter : Newtonsoft.Json.Converters.CustomCreationConverter<IPerson> { //重写abstract class CustomCreationConverter<T>的Create方法 public override IPerson Create(Type objectType) { return new Employee(); } } public partial class testjson : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { //if (!IsPostBack) // TestJson(); } #region 序列化 public string TestJsonSerialize() { Product product = new Product(); product.Name = "Apple"; product.Expiry = DateTime.Now.AddDays(3).ToString("yyyy-MM-dd hh:mm:ss"); product.Price = 3.99M; //product.Sizes = new string[] { "Small", "Medium", "Large" }; //string json = Newtonsoft.Json.JsonConvert.SerializeObject(product); //没有缩进输出 string json = Newtonsoft.Json.JsonConvert.SerializeObject(product, Newtonsoft.Json.Formatting.Indented); //string json = Newtonsoft.Json.JsonConvert.SerializeObject( // product, // Newtonsoft.Json.Formatting.Indented, // new Newtonsoft.Json.JsonSerializerSettings { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore } //); return string.Format("<p>{0}</p>", json); } public string TestListJsonSerialize() { Product product = new Product(); product.Name = "Apple"; product.Expiry = DateTime.Now.AddDays(3).ToString("yyyy-MM-dd hh:mm:ss"); product.Price = 3.99M; product.Sizes = new string[] { "Small", "Medium", "Large" }; List<Product> plist = new List<Product>(); plist.Add(product); plist.Add(product); string json = Newtonsoft.Json.JsonConvert.SerializeObject(plist, Newtonsoft.Json.Formatting.Indented); return string.Format("<p>{0}</p>", json); } #endregion #region 反序列化 public string TestJsonDeserialize() { string strjson = "{\"Name\":\"Apple\",\"Expiry\":\"2014-05-03 10:20:59\",\"Price\":3.99,\"Sizes\":[\"Small\",\"Medium\",\"Large\"]}"; Product p = Newtonsoft.Json.JsonConvert.DeserializeObject<Product>(strjson); string template = @"<p><ul> <li>{0}</li> <li>{1}</li> <li>{2}</li> <li>{3}</li> </ul></p>"; return string.Format(template, p.Name, p.Expiry, p.Price.ToString(), string.Join(",", p.Sizes)); } public string TestListJsonDeserialize() { string strjson = "{\"Name\":\"Apple\",\"Expiry\":\"2014-05-03 10:20:59\",\"Price\":3.99,\"Sizes\":[\"Small\",\"Medium\",\"Large\"]}"; List<Product> plist = Newtonsoft.Json.JsonConvert.DeserializeObject<List<Product>>(string.Format("[{0},{1}]", strjson, strjson)); string template = @"<p><ul> <li>{0}</li> <li>{1}</li> <li>{2}</li> <li>{3}</li> </ul></p>"; System.Text.StringBuilder strb = new System.Text.StringBuilder(); plist.ForEach(x => strb.AppendLine( string.Format(template, x.Name, x.Expiry, x.Price.ToString(), string.Join(",", x.Sizes)) ) ); return strb.ToString(); } #endregion #region 自定义反序列化 public string TestListCustomDeserialize() { string strJson = "[ { \"FirstName\": \"Maurice\", \"LastName\": \"Moss\", \"BirthDate\": \"1981-03-08T00:00Z\", \"Department\": \"IT\", \"JobTitle\": \"Support\" }, { \"FirstName\": \"Jen\", \"LastName\": \"Barber\", \"BirthDate\": \"1985-12-10T00:00Z\", \"Department\": \"IT\", \"JobTitle\": \"Manager\" } ] "; List<IPerson> people = Newtonsoft.Json.JsonConvert.DeserializeObject<List<IPerson>>(strJson, new PersonConverter()); IPerson person = people[0]; string template = @"<p><ul> <li>当前List<IPerson>[x]对象类型：{0}</li> <li>FirstName：{1}</li> <li>LastName：{2}</li> <li>BirthDate：{3}</li> <li>Department：{4}</li> <li>JobTitle：{5}</li> </ul></p>"; System.Text.StringBuilder strb = new System.Text.StringBuilder(); people.ForEach(x => strb.AppendLine( string.Format( template, person.GetType().ToString(), x.FirstName, x.LastName, x.BirthDate.ToString(), ((Employee)x).Department, ((Employee)x).JobTitle ) ) ); return strb.ToString(); } #endregion #region 反序列化成Dictionary public string TestDeserialize2Dic() { //string json = @"{""key1"":""zhangsan"",""key2"":""lisi""}"; //string json = "{\"key1\":\"zhangsan\",\"key2\":\"lisi\"}"; string json = "{key1:\"zhangsan\",key2:\"lisi\"}"; Dictionary<string, string> dic = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, string>>(json); string template = @"<li>key：{0}，value：{1}</li>"; System.Text.StringBuilder strb = new System.Text.StringBuilder(); strb.Append("Dictionary<string, string>长度" + dic.Count.ToString() + "<ul>"); dic.AsQueryable().ToList().ForEach(x => { strb.AppendLine(string.Format(template, x.Key, x.Value)); }); strb.Append("</ul>"); return strb.ToString(); } #endregion #region NullValueHandling特性 public class Movie { public string Name { get; set; } public string Description { get; set; } public string Classification { get; set; } public string Studio { get; set; } public DateTime? ReleaseDate { get; set; } public List<string> ReleaseCountries { get; set; } } /// <summary> /// 完整序列化输出 /// </summary> public string CommonSerialize() { Movie movie = new Movie(); movie.Name = "Bad Boys III"; movie.Description = "It's no Bad Boys"; string included = Newtonsoft.Json.JsonConvert.SerializeObject( movie, Newtonsoft.Json.Formatting.Indented, //缩进 new Newtonsoft.Json.JsonSerializerSettings { } ); return included; } /// <summary> /// 忽略空（Null）对象输出 /// </summary> /// <returns></returns> public string IgnoredSerialize() { Movie movie = new Movie(); movie.Name = "Bad Boys III"; movie.Description = "It's no Bad Boys"; string included = Newtonsoft.Json.JsonConvert.SerializeObject( movie, Newtonsoft.Json.Formatting.Indented, //缩进 new Newtonsoft.Json.JsonSerializerSettings { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore } ); return included; } #endregion public class Product { public string Name { get; set; } public string Expiry { get; set; } public Decimal Price { get; set; } public string[] Sizes { get; set; } } #region DefaultValueHandling默认值 public class Invoice { public string Company { get; set; } public decimal Amount { get; set; } // false is default value of bool public bool Paid { get; set; } // null is default value of nullable public DateTime? PaidDate { get; set; } // customize default values [System.ComponentModel.DefaultValue(30)] public int FollowUpDays { get; set; } [System.ComponentModel.DefaultValue("")] public string FollowUpEmailAddress { get; set; } } public void GG() { Invoice invoice = new Invoice { Company = "Acme Ltd.", Amount = 50.0m, Paid = false, FollowUpDays = 30, FollowUpEmailAddress = string.Empty, PaidDate = null }; string included = Newtonsoft.Json.JsonConvert.SerializeObject( invoice, Newtonsoft.Json.Formatting.Indented, new Newtonsoft.Json.JsonSerializerSettings { } ); // { // "Company": "Acme Ltd.", // "Amount": 50.0, // "Paid": false, // "PaidDate": null, // "FollowUpDays": 30, // "FollowUpEmailAddress": "" // } string ignored = Newtonsoft.Json.JsonConvert.SerializeObject( invoice, Newtonsoft.Json.Formatting.Indented, new Newtonsoft.Json.JsonSerializerSettings { DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore } ); // { // "Company": "Acme Ltd.", // "Amount": 50.0 // } } #endregion #region JsonIgnoreAttribute and DataMemberAttribute 特性 public string OutIncluded() { Car car = new Car { Model = "zhangsan", Year = DateTime.Now, Features = new List<string> { "aaaa", "bbbb", "cccc" }, LastModified = DateTime.Now.AddDays(5) }; return Newtonsoft.Json.JsonConvert.SerializeObject(car, Newtonsoft.Json.Formatting.Indented); } public string OutIncluded2() { Computer com = new Computer { Name = "zhangsan", SalePrice = 3999m, Manufacture = "red", StockCount = 5, WholeSalePrice = 34m, NextShipmentDate = DateTime.Now.AddDays(5) }; return Newtonsoft.Json.JsonConvert.SerializeObject(com, Newtonsoft.Json.Formatting.Indented); } public class Car { // included in JSON public string Model { get; set; } public DateTime Year { get; set; } public List<string> Features { get; set; } // ignored [Newtonsoft.Json.JsonIgnore] public DateTime LastModified { get; set; } } //在nt3.5中需要添加System.Runtime.Serialization.dll引用 [System.Runtime.Serialization.DataContract] public class Computer { // included in JSON [System.Runtime.Serialization.DataMember] public string Name { get; set; } [System.Runtime.Serialization.DataMember] public decimal SalePrice { get; set; } // ignored public string Manufacture { get; set; } public int StockCount { get; set; } public decimal WholeSalePrice { get; set; } public DateTime NextShipmentDate { get; set; } } #endregion #region IContractResolver特性 public class Book { public string BookName { get; set; } public decimal BookPrice { get; set; } public string AuthorName { get; set; } public int AuthorAge { get; set; } public string AuthorCountry { get; set; } } public void KK() { Book book = new Book { BookName = "The Gathering Storm", BookPrice = 16.19m, AuthorName = "Brandon Sanderson", AuthorAge = 34, AuthorCountry = "United States of America" }; string startingWithA = Newtonsoft.Json.JsonConvert.SerializeObject( book, Newtonsoft.Json.Formatting.Indented, new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new DynamicContractResolver('A') } ); // { // "AuthorName": "Brandon Sanderson", // "AuthorAge": 34, // "AuthorCountry": "United States of America" // } string startingWithB = Newtonsoft.Json.JsonConvert.SerializeObject( book, Newtonsoft.Json.Formatting.Indented, new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new DynamicContractResolver('B') } ); // { // "BookName": "The Gathering Storm", // "BookPrice": 16.19 // } } public class DynamicContractResolver : Newtonsoft.Json.Serialization.DefaultContractResolver { private readonly char _startingWithChar; public DynamicContractResolver(char startingWithChar) { _startingWithChar = startingWithChar; } protected override IList<Newtonsoft.Json.Serialization.JsonProperty> CreateProperties(Type type, Newtonsoft.Json.MemberSerialization memberSerialization) { IList<Newtonsoft.Json.Serialization.JsonProperty> properties = base.CreateProperties(type, memberSerialization); // only serializer properties that start with the specified character properties = properties.Where(p => p.PropertyName.StartsWith(_startingWithChar.ToString())).ToList(); return properties; } } #endregion //... } } #region Serializing Partial JSON Fragment Example public class SearchResult { public string Title { get; set; } public string Content { get; set; } public string Url { get; set; } } public string SerializingJsonFragment() { #region string googleSearchText = @"{ 'responseData': { 'results': [{ 'GsearchResultClass': 'GwebSearch', 'unescapedUrl': 'http://en.wikipedia.org/wiki/Paris_Hilton', 'url': 'http://en.wikipedia.org/wiki/Paris_Hilton', 'visibleUrl': 'en.wikipedia.org', 'cacheUrl': 'http://www.google.com/search?q=cache:TwrPfhd22hYJ:en.wikipedia.org', 'title': '<b>Paris Hilton</b> - Wikipedia, the free encyclopedia', 'titleNoFormatting': 'Paris Hilton - Wikipedia, the free encyclopedia', 'content': '[1] In 2006, she released her debut album...' }, { 'GsearchResultClass': 'GwebSearch', 'unescapedUrl': 'http://www.imdb.com/name/nm0385296/', 'url': 'http://www.imdb.com/name/nm0385296/', 'visibleUrl': 'www.imdb.com', 'cacheUrl': 'http://www.google.com/search?q=cache:1i34KkqnsooJ:', 'title': '<b>Paris Hilton</b>', 'titleNoFormatting': 'Paris Hilton', 'content': 'Self: Zoolander. Socialite <b>Paris Hilton</b>...' }], 'cursor': { 'pages': [{ 'start': '0', 'label': 1 }, { 'start': '4', 'label': 2 }, { 'start': '8', 'label': 3 }, { 'start': '12', 'label': 4 }], 'estimatedResultCount': '59600000', 'currentPageIndex': 0, 'moreResultsUrl': 'http://www.google.com/search?oe=utf8&ie=utf8...' } }, 'responseDetails': null, 'responseStatus': 200 }"; #endregion Newtonsoft.Json.Linq.JObject googleSearch = Newtonsoft.Json.Linq.JObject.Parse(googleSearchText); // get JSON result objects into a list List<Newtonsoft.Json.Linq.JToken> listJToken = googleSearch["responseData"]["results"].Children().ToList(); System.Text.StringBuilder strb = new System.Text.StringBuilder(); string template = @"<ul> <li>Title:{0}</li> <li>Content: {1}</li> <li>Url:{2}</li> </ul>"; listJToken.ForEach(x => { // serialize JSON results into .NET objects SearchResult searchResult = Newtonsoft.Json.JsonConvert.DeserializeObject<SearchResult>(x.ToString()); strb.AppendLine(string.Format(template, searchResult.Title, searchResult.Content, searchResult.Url)); }); return strb.ToString(); } #endregion #region ShouldSerialize public class CC { public string Name { get; set; } public CC Manager { get; set; } //http://msdn.microsoft.com/en-us/library/53b8022e.aspx public bool ShouldSerializeManager() { // don't serialize the Manager property if an employee is their own manager return (Manager != this); } } public string ShouldSerializeTest() { //create Employee mike CC mike = new CC(); mike.Name = "Mike Manager"; //create Employee joe CC joe = new CC(); joe.Name = "Joe Employee"; joe.Manager = mike; //set joe'Manager = mike // mike is his own manager // ShouldSerialize will skip this property mike.Manager = mike; return Newtonsoft.Json.JsonConvert.SerializeObject(new[] { joe, mike }, Newtonsoft.Json.Formatting.Indented); } #endregion //驼峰结构输出（小写打头，后面单词大写） public string JJJ() { Product product = new Product { Name = "Widget", Expiry = DateTime.Now.ToString(), Price = 9.99m, Sizes = new[] { "Small", "Medium", "Large" } }; string json = Newtonsoft.Json.JsonConvert.SerializeObject( product, Newtonsoft.Json.Formatting.Indented, new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver() } ); return json; //{ // "name": "Widget", // "expiryDate": "2010-12-20T18:01Z", // "price": 9.99, // "sizes": [ // "Small", // "Medium", // "Large" // ] //} } #region ITraceWriter public class Staff { public string Name { get; set; } public List<string> Roles { get; set; } public DateTime StartDate { get; set; } } public void KKKK() { Staff staff = new Staff(); staff.Name = "Arnie Admin"; staff.Roles = new List<string> { "Administrator" }; staff.StartDate = new DateTime(2000, 12, 12, 12, 12, 12, DateTimeKind.Utc); Newtonsoft.Json.Serialization.ITraceWriter traceWriter = new Newtonsoft.Json.Serialization.MemoryTraceWriter(); Newtonsoft.Json.JsonConvert.SerializeObject( staff, new Newtonsoft.Json.JsonSerializerSettings { TraceWriter = traceWriter, Converters = { new Newtonsoft.Json.Converters.JavaScriptDateTimeConverter() } } ); Console.WriteLine(traceWriter); // 2012-11-11T12:08:42.761 Info Started serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''. // 2012-11-11T12:08:42.785 Info Started serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'. // 2012-11-11T12:08:42.791 Info Finished serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'. // 2012-11-11T12:08:42.797 Info Started serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'. // 2012-11-11T12:08:42.798 Info Finished serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'. // 2012-11-11T12:08:42.799 Info Finished serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''. // 2013-05-18T21:38:11.255 Verbose Serialized JSON: // { // "Name": "Arnie Admin", // "StartDate": new Date( // 976623132000 // ), // "Roles": [ // "Administrator" // ] // } } #endregion public string TestReadJsonFromFile() { Linq2Json l2j = new Linq2Json(); Newtonsoft.Json.Linq.JObject jarray = l2j.GetJObject4(); return jarray.ToString(); } using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace microstore { public class Linq2Json { #region GetJObject //Parsing a JSON Object from text public Newtonsoft.Json.Linq.JObject GetJObject() { string json = @"{ CPU: 'Intel', Drives: [ 'DVD read/writer', '500 gigabyte hard drive' ] }"; Newtonsoft.Json.Linq.JObject jobject = Newtonsoft.Json.Linq.JObject.Parse(json); return jobject; } /* * //example:=> * Linq2Json l2j = new Linq2Json(); Newtonsoft.Json.Linq.JObject jobject = l2j.GetJObject2(Server.MapPath("json/Person.json")); //return Newtonsoft.Json.JsonConvert.SerializeObject(jobject, Newtonsoft.Json.Formatting.Indented); return jobject.ToString(); */ //Loading JSON from a file public Newtonsoft.Json.Linq.JObject GetJObject2(string jsonPath) { using (System.IO.StreamReader reader = System.IO.File.OpenText(jsonPath)) { Newtonsoft.Json.Linq.JObject jobject = (Newtonsoft.Json.Linq.JObject)Newtonsoft.Json.Linq.JToken.ReadFrom(new Newtonsoft.Json.JsonTextReader(reader)); return jobject; } } //Creating JObject public Newtonsoft.Json.Linq.JObject GetJObject3() { List<Post> posts = GetPosts(); Newtonsoft.Json.Linq.JObject jobject = Newtonsoft.Json.Linq.JObject.FromObject(new { channel = new { title = "James Newton-King", link = "http://james.newtonking.com", description = "James Newton-King's blog.", item = from p in posts orderby p.Title select new { title = p.Title, description = p.Description, link = p.Link, category = p.Category } } }); return jobject; } /* { "channel": { "title": "James Newton-King", "link": "http://james.newtonking.com", "description": "James Newton-King's blog.", "item": [{ "title": "jewron", "description": "4546fds", "link": "http://www.baidu.com", "category": "jhgj" }, { "title": "jofdsn", "description": "mdsfan", "link": "http://www.baidu.com", "category": "6546" }, { "title": "jokjn", "description": "m3214an", "link": "http://www.baidu.com", "category": "hg425" }, { "title": "jon", "description": "man", "link": "http://www.baidu.com", "category": "goodman" }] } } */ //Creating JObject public Newtonsoft.Json.Linq.JObject GetJObject4() { List<Post> posts = GetPosts(); Newtonsoft.Json.Linq.JObject rss = new Newtonsoft.Json.Linq.JObject( new Newtonsoft.Json.Linq.JProperty("channel", new Newtonsoft.Json.Linq.JObject( new Newtonsoft.Json.Linq.JProperty("title", "James Newton-King"), new Newtonsoft.Json.Linq.JProperty("link", "http://james.newtonking.com"), new Newtonsoft.Json.Linq.JProperty("description", "James Newton-King's blog."), new Newtonsoft.Json.Linq.JProperty("item", new Newtonsoft.Json.Linq.JArray( from p in posts orderby p.Title select new Newtonsoft.Json.Linq.JObject( new Newtonsoft.Json.Linq.JProperty("title", p.Title), new Newtonsoft.Json.Linq.JProperty("description", p.Description), new Newtonsoft.Json.Linq.JProperty("link", p.Link), new Newtonsoft.Json.Linq.JProperty("category", new Newtonsoft.Json.Linq.JArray( from c in p.Category select new Newtonsoft.Json.Linq.JValue(c) ) ) ) ) ) ) ) ); return rss; } /* { "channel": { "title": "James Newton-King", "link": "http://james.newtonking.com", "description": "James Newton-King's blog.", "item": [{ "title": "jewron", "description": "4546fds", "link": "http://www.baidu.com", "category": ["j", "h", "g", "j"] }, { "title": "jofdsn", "description": "mdsfan", "link": "http://www.baidu.com", "category": ["6", "5", "4", "6"] }, { "title": "jokjn", "description": "m3214an", "link": "http://www.baidu.com", "category": ["h", "g", "4", "2", "5"] }, { "title": "jon", "description": "man", "link": "http://www.baidu.com", "category": ["g", "o", "o", "d", "m", "a", "n"] }] } } */ public class Post { public string Title { get; set; } public string Description { get; set; } public string Link { get; set; } public string Category { get; set; } } private List<Post> GetPosts() { List<Post> listp = new List<Post>() { new Post{Title="jon",Description="man",Link="http://www.baidu.com",Category="goodman"}, new Post{Title="jofdsn",Description="mdsfan",Link="http://www.baidu.com",Category="6546"}, new Post{Title="jewron",Description="4546fds",Link="http://www.baidu.com",Category="jhgj"}, new Post{Title="jokjn",Description="m3214an",Link="http://www.baidu.com",Category="hg425"} }; return listp; } #endregion #region GetJArray /* * //example:=> * Linq2Json l2j = new Linq2Json(); Newtonsoft.Json.Linq.JArray jarray = l2j.GetJArray(); return Newtonsoft.Json.JsonConvert.SerializeObject(jarray, Newtonsoft.Json.Formatting.Indented); //return jarray.ToString(); */ //Parsing a JSON Array from text public Newtonsoft.Json.Linq.JArray GetJArray() { string json = @"[ 'Small', 'Medium', 'Large' ]"; Newtonsoft.Json.Linq.JArray jarray = Newtonsoft.Json.Linq.JArray.Parse(json); return jarray; } //Creating JArray public Newtonsoft.Json.Linq.JArray GetJArray2() { Newtonsoft.Json.Linq.JArray array = new Newtonsoft.Json.Linq.JArray(); Newtonsoft.Json.Linq.JValue text = new Newtonsoft.Json.Linq.JValue("Manual text"); Newtonsoft.Json.Linq.JValue date = new Newtonsoft.Json.Linq.JValue(new DateTime(2000, 5, 23)); //add to JArray array.Add(text); array.Add(date); return array; } #endregion //待续... } }
测试效果：