【数据交换】在.NET使用JSON作为数据交换格式实例演示-json格式

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在.NET使用JSON作为数据交换格式实例演示

using System;
using SystemCollectionsGeneric;
using SystemLinq;
using SystemText;
using SystemWebScriptSerialization;
using SystemRuntimeSerializationJson;
using SystemIO;
using SystemRuntimeSerialization;
using NewtonsoftJson;
using NewtonsoftJsonLinq;
using NewtonsoftJsonConverters;
namespace JSONDemo
{
class Program
{
staticvoid Main(string[] args)
{
JavaScriptSerializerDemo();
DataContractJsonSerializerDemo();
JsonConvertDemo();
JsonConvertLinqDemo();
ConsoleReadLine();
}
publicstaticvoid JavaScriptSerializerDemo()
{
User user=new User { UserId=1, UserName="李刚", CreateDate=DateTimeNowAddYears(-30),Birthday=DateTimeNowAddYears(-50), Priority=PriorityHighest, Salary=500000 };
//JavaScriptSerializer类在SystemWebExtensionsdll中，注意添加这个引用
JavaScriptSerializer serializer=new JavaScriptSerializer();
//JSON序列化
string result=serializerSerialize(user);
ConsoleWriteLine("使用JavaScriptSerializer序列化后的结果：{0},长度：{1}", result, resultLength);
//JSON反序列化
user=serializerDeserialize<User>(result);
ConsoleWriteLine("使用JavaScriptSerializer反序列化后的结果：UserId:{0},UserName:{1},CreateDate:{2},Priority:{3}", userUserId, userUserName, userCreateDate, userPriority);
}
publicstaticvoid DataContractJsonSerializerDemo()
{
User user=new User { UserId=1, UserName="李刚", CreateDate=DateTimeNowAddYears(-30), Birthday=DateTimeNowAddYears(-50), Priority=PriorityAboveNormal, Salary=50000 };
string result=stringEmpty;
//DataContractJsonSerializer类在SystemServiceModelWebdll中，注意添加这个引用
DataContractJsonSerializer serializer=new DataContractJsonSerializer(typeof(User));
using (MemoryStream stream=new MemoryStream())
{
//JSON序列化
serializerWriteObject(stream, user);
result=EncodingUTFGetString(streamToArray());
ConsoleWriteLine("使用DataContractJsonSerializer序列化后的结果：{0},长度：{1}", result, resultLength);
}
//JSON反序列化
byte[] buffer=EncodingUTFGetBytes(result);
using (MemoryStream stream=new MemoryStream(buffer))
{
user=serializerReadObject(stream) as User;
ConsoleWriteLine("使用DataContractJsonSerializer反序列化后的结果：UserId:{0},UserName:{1},CreateDate:{2},Priority:{3}", userUserId, userUserName, userCreateDate, userPriority);
}
}
publicstaticvoid JsonConvertDemo()
{
User user=new User { UserId=1, UserName="李刚", CreateDate=DateTimeNowAddYears(-30), Birthday=DateTimeNowAddYears(-50), Priority=PriorityBelowNormal, Salary=5000 };
//JsonConvert类在NewtonsoftJsonNetdll中，注意到http://wwwcodeplexcom/json/下载这个dll并添加这个引用
//JSON序列化
string result=JsonConvertSerializeObject(user);
ConsoleWriteLine("使用JsonConvert序列化后的结果：{0},长度：{1}", result, resultLength);
//JSON反序列化
user=JsonConvertDeserializeObject<User>(result);
ConsoleWriteLine("使用JsonConvert反序列化后的结果：UserId:{0},UserName:{1},CreateDate:{2},Priority:{3}", userUserId, userUserName, userCreateDate, userPriority);
}
publicstaticvoid JsonConvertLinqDemo()
{
User user=new User { UserId=1, UserName="周公", CreateDate=DateTimeNowAddYears(-8), Birthday=DateTimeNowAddYears(-32), Priority=PriorityLowest, Salary=500, Urls=new List<string> { "http://zhoufoxcnblog51ctocom", "http://www.jb51.net" } };
//JsonConvert类在NewtonsoftJsonNetdll中，注意到http://wwwcodeplexcom/json/下载这个dll并添加这个引用
//JSON序列化
string result=JsonConvertSerializeObject(user);
ConsoleWriteLine("使用JsonConvert序列化后的结果：{0},长度：{1}", result, resultLength);
//使用Linq to JSON
JObject jobject=JObjectParse(result);
JToken token=jobject["Urls"];
List<string> urlList=new List<string>();
foreach (JToken t in token)
{
urlListAdd(tToString());
}
ConsoleWrite("使用Linq to JSON反序列化后的结果：[");
for (int i=0; i < urlListCount -1;i++ )
{
ConsoleWrite(urlList[i] +",");
}
ConsoleWriteLine(urlList[urlListCount -1] +"]");
}
}
[DataContract]
publicclass User
{
///<summary>
/// 编号
///</summary>
[DataMember]
publicint UserId { get; set; }
///<summary>
/// 用户名
///</summary>
[DataMember]
publicstring UserName { get; set; }
///<summary>
/// 创建时间
///</summary>
[DataMember]
[JsonConverter(typeof(IsoDateTimeConverter))]
public DateTime CreateDate { get; set; }
///<summary>
/// 生日
///</summary>
[DataMember]
[JsonConverter(typeof(JavaScriptDateTimeConverter))]
public DateTime Birthday { get; set; }
///<summary>
/// 相关URL
///</summary>
[DataMember]
public List<string> Urls { get; set; }
///<summary>
/// 薪水
///</summary>
[ScriptIgnore]//使用JavaScriptSerializer序列化时不序列化此字段
[IgnoreDataMember]//使用DataContractJsonSerializer序列化时不序列化此字段
[JsonIgnore]//使用JsonConvert序列化时不序列化此字段
publicint Salary { get; set; }
///<summary>
/// 权利级别
///</summary>
[DataMember]
public Priority Priority { get; set; }
public User()
{
Urls=new List<string>();
}
}
///<summary>
/// 权利级别
///</summary>
publicenum Priority:byte
{
Lowest=0x1,
BelowNormal=0x2,
Normal=0x4,
AboveNormal=0x8,
Highest=0x16
}
}

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