Original article: http://james.newtonking.com/archive/2009/12/26/json-net-3-5-release-6-binary-json-bson-support.aspx
Introduction:
Entity serialization is often found in daily work, so we are always looking for an efficient serialization method. Previously viewedJSON. NET and ProtoBuf.Recently I looked at MongiDB and found that they store BSON, a binary Json. I will translate an article here to give you an introduction, and then write an article to describe the efficiency comparison of various serialization methods.
Json. NET 3.5 Release 6 and later support for BSON, which is: bytes.
Bson supports some additional types, such as binary data to be converted to Json.
Bson is significantly better than Json in terms of the serialization speed and serialization speed. It directly stores binary data to avoid the additional overhead of base64 encoding for Json data and faster reading/writing Bson than Json.
Code Product p = new Product ();
P. ExpiryDate = DateTime. Parse ("2009-04-05T14: 45: 00Z ");
P. Name = "Carlos 'Spicy Wieners ";
P. Price = 9.95 m;
P. Sizes = new [] {"Small", "Medium", "Large "};
MemoryStream MS = new MemoryStream ();
JsonSerializer serializer = new JsonSerializer ();
// Serialize product to BSON
BsonWriter writer = new BsonWriter (MS );
Serializer. Serialize (writer, p );
Console. WriteLine (BitConverter. ToString (ms. ToArray ()));
// 7C-00-00-00-02-4E-61-6D-65-00-16-00-00-00-43-61-72-6C-
// 6F-73-27-20-53-70-69-63-79-20-57-69-65-6E-65-72-73-00-
// 09-45-78-70-69-72-79-44-61-74-65-00-E0-51-BD-76-20-01-
// 00-00-01-50-72-69-63-65-00-66-66-66-66-66-E6-23-40-04-
// 53-69-7A-65-73-00-2D-00-00-00-02-30-00-06-00-00-00-53-
// 6D-61-6C-6C-00-02-31-00-07-00-00-00-4D-65-64-69-75-6D-
// 00-02-32-00-06-00-00-00-4C-61-72-67-65-00-00-00
Ms. Seek (0, SeekOrigin. Begin );
// Deserialize product from BSON
BsonReader reader = new BsonReader (MS );
Product deserializedProduct = serializer. Deserialize <Product> (reader );
Console. WriteLine (deserializedProduct. Name );
// Carlos 'Spicy Wieners
Json.net no longer depends on the Entity Framework, Link to SQL, or third-party assembly. At the same time, it can be run in. net4.0. For the operation method, refer to "worker.
Json. Net currently automatically serializes and deserializes DataSet and DataTable.
Code DataSet ds = new DataSet ();
Ds. Tables. Add (CreateDataTable ("FirstTable", 2 ));
Ds. Tables. Add (CreateDataTable ("SecondTable", 1 ));
String json = JsonConvert. SerializeObject (ds, Formatting. Indented, new IsoDateTimeConverter ());
//{
// "FirstTable ":[
//{
// "StringCol": "Item Name ",
// "Int32Col": 1,
// "BooleanCol": true,
// "TimeSpanCol": "10.22: 10: 15.1000000 ",
// "DateTimeCol": "2000-12-29T00: 00: 00Z ",
// "DecimalCol": 64.0021
//},
//{
// "StringCol": "Item Name ",
// "Int32Col": 2,
// "BooleanCol": true,
// "TimeSpanCol": "10.22: 10: 15.1000000 ",
// "DateTimeCol": "2000-12-29T00: 00: 00Z ",
// "DecimalCol": 64.0021
//}
//],
// "SecondTable ":[
//{
// "StringCol": "Item Name ",
// "Int32Col": 1,
// "BooleanCol": true,
// "TimeSpanCol": "10.22: 10: 15.1000000 ",
// "DateTimeCol": "2000-12-29T00: 00: 00Z ",
// "DecimalCol": 64.0021
//}
//]
//}
DataSet deserializedDs = JsonConvert. DeserializeObject <DataSet> (json, new IsoDateTimeConverter ());
SelectToken provides a statement similar to Xpath to search for data.
String name = (string) o. SelectToken ("Manufacturers [0]. Name ");
Code JObject o = JObject. Parse (@"{
"" Stores "":[
"" Lambton Quay "",
"" Willis Street ""
],
"" Manufacturers "":[
{
"" Name "": "Acme Co "",
"" Products "":[
{
"" Name "": "" andevil "",
"" Price ": 50
}
]
},
{
"" Name "": "Contoso "",
"" Products "":[
{
"" Name ":" "Elbow Grease "",
"" Price ": 99.95
},
{
"" Name ":" "Headlight Fluid "",
"" Price ": 4
}
]
}
]
}");
String name = (string) o. SelectToken ("Manufacturers [0]. Name ");
// Acme Co
Decimal productPrice = (decimal) o. SelectToken ("Manufacturers [0]. Products [0]. Price ");
// 50
String productName = (string) o. SelectToken ("Manufacturers [1]. Products [0]. Name ");
// Elbow Grease
