C# Newtonsoft.Json
Newtonsoft.Json,是.Net中开源的Json序列化和反序列化工具,官方地址:http://www.newtonsoft.com/json。
功能比较多,效率比较高,官方给出对比数据
50% faster than DataContractJsonSerializer, and 250% faster than JavaScriptSerializer.
比较常用的功能除了序列化发序列化之外,还有 Linq To Json、Json Path、 XML support等
更多详情参考:http://www.newtonsoft.com/json/help/html/JsonNetVsDotNetSerializers.htm
使用方法简单:
使用命令
Install-Package Newtonsoft.Json
或者右键,项目》Nuget包管理,添加
简答使用实例如下:
1.定义类:
/// <summary> /// 学生信息实体 /// </summary> public class Student { public int ID { get; set; } public string Name { get; set; } public Class Class { get; set; } } /// <summary> /// 学生班级实体 /// </summary> public class Class { public int ID { get; set; } public string Name { get; set; } }
2.序列化,反序列化 实体对象,实体集合,匿名对象:
Student stu = new Student(); stu.ID = 1; stu.Name = "张三"; stu.Class = new Class() { ID = 0121, Name = "CS0121" }; //使用方法1 //实体序列化、反序列化 //结果:{"ID":1,"Name":"张三","Class":{"ID":121,"Name":"CS0121"}} string json1 = JsonConvert.SerializeObject(stu); Console.WriteLine(json1); Student stu2 = JsonConvert.DeserializeObject<Student>(json1); Console.WriteLine(stu2.Name + "---" + stu2.Class.Name); //实体集合,序列化和反序列化 List<Student> stuList = new List<Student>() { stu, stu2 }; string json2 = JsonConvert.SerializeObject(stuList); Console.WriteLine(json2); List<Student> stuList2 = JsonConvert.DeserializeObject<List<Student>>(json2); foreach (var item in stuList2) { Console.WriteLine(item.Name + "----" + item.Class.Name); } //匿名对象的解析, //匿名独享的类型 obj.GetType().Name: "<>f__AnonymousType0`2" var obj = new { ID = 2, Name = "李四" }; string json3 = JsonConvert.SerializeObject(obj); Console.WriteLine(json3); object obj2 = JsonConvert.DeserializeAnonymousType(json3, obj); Console.WriteLine(obj2.GetType().GetProperty("ID").GetValue(obj2)); object obj3 = JsonConvert.DeserializeAnonymousType(json3, new { ID = default(int), Name = default(string) }); Console.WriteLine(obj3.GetType().GetProperty("ID").GetValue(obj3)); //匿名对象解析,可以传入现有类型,进行转换 Student stu3 = new Student(); stu3 = JsonConvert.DeserializeAnonymousType(json3, new Student()); Console.WriteLine(stu3.Name);
3.控制字符串的序列化,更方便:
JsonSerializerSettings settings = new JsonSerializerSettings(); settings.DateFormatString = "yyyy-MM-dd"; string str = JsonConvert.SerializeObject(_Context.students.First(), settings); Console.WriteLine(str);
{"sno":"101","sname":"李军","ssex":"男","sbirthday":"1976-02-20","_class":"95033"}