Json.NET使用入门(一)【序列化】
发布时间：2020-12-16 18:54:02 所属栏目：百科 来源：网络整理
导读：不要失去希望，你永远不知道明天会带来什么。很多事犹如天气，慢慢热或者渐渐冷，等到惊悟，已过了一季。趁年青，趁梦想还在，想去的地方，现在就去。想做的事情，现在就做。 Model层的实体类: public class Account { public string Email { get ; set ; }
不要失去希望，你永远不知道明天会带来什么。很多事犹如天气，慢慢热或者渐渐冷，等到惊悟，已过了一季。趁年青，趁梦想还在，想去的地方，现在就去。想做的事情，现在就做。Model层的实体类:public class Account
{
public string Email { get; set; }
public bool Active { get; set; }
public DateTime CreatedDate { get; set; }
public IList<string> Roles { get; set; }
}
public class Employee
{
public string Name { get; set; }
public Employee Manager { get; set; }
public bool ShouldSerializeManager()
{
return (Manager != this);
}
}
public class JavaScriptSettings
{
public JRaw OnLoadFunction { get; set; }
public JRaw OnUnloadFunction { get; set; }
}
public class Movie
{
public string Name { get; set; }
public int Year { get; set; }
}
Default.aspx内容:<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="NewtonsoftDemo.Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
<asp:Button ID="btnSerializeAnObject" runat="server" Text="序列化一个对象" OnClick="btnSerializeAnObject_Click" />
</td>
<td>
<asp:Button ID="btnSerializeACollection" runat="server" Text="序列化集合" OnClick="btnSerializeACollection_Click" /><br />
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnSerializeADictionary" runat="server" Text="序列化一个字典" OnClick="btnSerializeADictionary_Click" />
</td>
<td>
<asp:Button ID="btnSerializeJSONToFile" runat="server" Text="序列JSON到文件" OnClick="btnSerializeJSONToFile_Click" /><br />
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnSerializeWithJsonConverters" runat="server" Text="用JsonConverters序列化" OnClick="btnSerializeWithJsonConverters_Click" />
</td>
<td>
<asp:Button ID="btnSerializeADataSet" runat="server" Text="序列化一个DataSet" OnClick="btnSerializeADataSet_Click" Style="height: 21px" /><br />
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnSerializeRawJSON" runat="server" Text="序列化原始JSON值" OnClick="btnSerializeRawJSON_Click" />
</td>
<td>
<asp:Button ID="btnSerializeUnindentedJSON" runat="server" Text="序列化不缩进JSON" OnClick="btnSerializeUnindentedJSON_Click" /><br />
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnSerializeConditionalProperty" runat="server" Text="序列化条件属性" OnClick="btnSerializeConditionalProperty_Click" /></td>
<td>
<br />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Default.aspx.cs代码:public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender,EventArgs e)
{
}
protected void btnSerializeAnObject_Click(object sender,EventArgs e)
{
Account account = new Account
{
Email = "james@example.com",Active = true,CreatedDate = new DateTime(2013,1,20,0,DateTimeKind.Utc),Roles = new List<string>
{
"User","Admin"
}
};
string json = JsonConvert.SerializeObject(account,Formatting.Indented);
Response.Write(json);
}
protected void btnSerializeACollection_Click(object sender,EventArgs e)
{
List<string> videogames = new List<string>
{
"Starcraft","Halo","Legend of Zelda"
};
string json = JsonConvert.SerializeObject(videogames);
Response.Write(json);
}
protected void btnSerializeADictionary_Click(object sender,EventArgs e)
{
Dictionary<string,int> points = new Dictionary<string,int>
{
{"James",9001},{"Jo",3474},{"Jess",11926}
};
string json = JsonConvert.SerializeObject(points,Formatting.Indented);
Response.Write(json);
}
protected void btnSerializeJSONToFile_Click(object sender,EventArgs e)
{
Movie movie = new Movie
{
Name = "Bad Boys",Year = 1995
};
//JSON序列化到一个字符串，然后写入字符串到文件
File.WriteAllText(Server.MapPath("~/App_Data/movie.json"),JsonConvert.SerializeObject(movie));
//直接序列JSON到文件
using (StreamWriter file = File.CreateText(Server.MapPath("~/App_Data/movie.json")))
{
JsonSerializer serializer = new JsonSerializer();
serializer.Serialize(file,movie);
}
}
protected void btnSerializeWithJsonConverters_Click(object sender,EventArgs e)
{
List<StringComparison> stringComparisons = new List<StringComparison>
{
StringComparison.CurrentCulture,StringComparison.Ordinal
};
string jsonWithoutConverter = JsonConvert.SerializeObject(stringComparisons);
Response.Write(jsonWithoutConverter);
string jsonWithConverter = JsonConvert.SerializeObject(stringComparisons,new StringEnumConverter());
Response.Write(jsonWithConverter);
List<StringComparison> newStringComparsions =
JsonConvert.DeserializeObject<List<StringComparison>>(jsonWithConverter,new StringEnumConverter());
Response.Write(string.Join(",",newStringComparsions.Select(c => c.ToString()).ToArray()));
}
protected void btnSerializeADataSet_Click(object sender,EventArgs e)
{
DataSet dataSet = new DataSet("dataSet");
dataSet.Namespace = "NetFrameWork";
DataTable table = new DataTable();
DataColumn idColumn = new DataColumn("id",typeof (int));
idColumn.AutoIncrement = true;
DataColumn itemColumn = new DataColumn("item");
table.Columns.Add(idColumn);
table.Columns.Add(itemColumn);
dataSet.Tables.Add(table);
for (int i = 0; i < 2; i++)
{
DataRow newRow = table.NewRow();
newRow["item"] = "item " + i;
table.Rows.Add(newRow);
}
dataSet.AcceptChanges();
string json = JsonConvert.SerializeObject(dataSet,Formatting.Indented);
Response.Write(json);
}
protected void btnSerializeRawJSON_Click(object sender,EventArgs e)
{
JavaScriptSettings settings = new JavaScriptSettings
{
OnLoadFunction = new JRaw("OnLoad"),OnUnloadFunction = new JRaw("function(e) { alert(e); }")
};
string json = JsonConvert.SerializeObject(settings,Formatting.Indented);
Response.Write(json);
}
protected void btnSerializeUnindentedJSON_Click(object sender,EventArgs e)
{
Account account = new Account
{
Email = "james@example.com",Roles = new List<string>
{
"User","Admin"
}
};
string json = JsonConvert.SerializeObject(account);
Response.Write(json);
}
protected void btnSerializeConditionalProperty_Click(object sender,EventArgs e)
{
Employee joe = new Employee();
joe.Name = "Joe Employee";
Employee mike = new Employee();
mike.Name = "Mike Manager";
joe.Manager = mike;
mike.Manager = mike;
string json = JsonConvert.SerializeObject(new[] { joe,mike },Formatting.Indented);
Response.Write(json);
}
}
运行结果如图:（编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |