[Unity3D plugin] Read and Write File data in Unity: LitJSON quick tutorial

Author: Wang Xuan Yi, source: http://www.cnblogs.com/neverdie/Reprinted, Please keep this statement. If you like this article, click [recommendation ]. Thank you!

Using LitJson; using System; public class Person {// C #3.0 auto-implemented properties public string Name {get; set;} public int Age {get; set ;} public DateTime Birthday {get; set ;}} public class JsonSample {public static void Main () {PersonToJson (); JsonToPerson ();} public static void PersonToJson () {Person bill = new Person (); bill. name = "William Shakespeare"; bill. age = 51; bill. birthday = new DateTime (1564, 4, 26); string json_bill = JsonMapper. toJson (bill); Console. writeLine (json_bill);} public static void JsonToPerson () {string json = @ "{" "Name" ":" "Thomas More" "," "Age" ": 57, "" Birthday ":" "02/07/1478 00:00:00"} "; Person thomas = JsonMapper. toObject <Person> (json); Console. writeLine ("Thomas 'Age: {0}", thomas. age );}}

Output above:

{"Name":"William Shakespeare","Age":51,"Birthday":"04/26/1564 00:00:00"}Thomas' age: 57

Use non-generic JsonMapper. ToObject

If no particular JSON data class exists, it returns a JSONData instance. JSONData is a general type that can store JSON data of any data type, including list and dictionary.

using LitJson;using System;public class JsonSample{    public static void Main()    {        string json = @"          {            ""album"" : {              ""name""   : ""The Dark Side of the Moon"",              ""artist"" : ""Pink Floyd"",              ""year""   : 1973,              ""tracks"" : [                ""Speak To Me"",                ""Breathe"",                ""On The Run""              ]            }          }        ";        LoadAlbumData(json);    }    public static void LoadAlbumData(string json_text)    {        Console.WriteLine("Reading data from the following JSON string: {0}",                          json_text);        JsonData data = JsonMapper.ToObject(json_text);        // Dictionaries are accessed like a hash-table        Console.WriteLine("Album's name: {0}", data["album"]["name"]);        // Scalar elements stored in a JsonData instance can be cast to        // their natural types        string artist = (string) data["album"]["artist"];        int    year   = (int) data["album"]["year"];        Console.WriteLine("Recorded by {0} in {1}", artist, year);        // Arrays are accessed like regular lists as well        Console.WriteLine("First track: {0}", data["album"]["tracks"][0]);    }}

Output of the above example:

Reading data from the following JSON string:          {            "album" : {              "name"   : "The Dark Side of the Moon",              "artist" : "Pink Floyd",              "year"   : 1973,              "tracks" : [                "Speak To Me",                "Breathe",                "On The Run"              ]            }          }Album's name: The Dark Side of the MoonRecorded by Pink Floyd in 1973First track: Speak To Me

Reader and Writer

Some people like to use stream to process JSON data. For them, the interfaces we provide are jsonreader and jsonwriter.

JSONMapper is actually based on the above two classes, so you can regard these two classes as the underlying interfaces of litJSON.

Use JsonReader

using LitJson;using System;public class DataReader{    public static void Main()    {        string sample = @"{            ""name""  : ""Bill"",            ""age""   : 32,            ""awake"" : true,            ""n""     : 1994.0226,            ""note""  : [ ""life"", ""is"", ""but"", ""a"", ""dream"" ]          }";        PrintJson(sample);    }    public static void PrintJson(string json)    {        JsonReader reader = new JsonReader(json);        Console.WriteLine ("{0,14} {1,10} {2,16}", "Token", "Value", "Type");        Console.WriteLine (new String ('-', 42));        // The Read() method returns false when there's nothing else to read        while (reader.Read()) {            string type = reader.Value != null ?                reader.Value.GetType().ToString() : "";            Console.WriteLine("{0,14} {1,10} {2,16}",                              reader.Token, reader.Value, type);        }    }}

The output is as follows:

Token      Value             Type------------------------------------------   ObjectStart                              PropertyName       name    System.String        String       Bill    System.String  PropertyName        age    System.String           Int         32     System.Int32  PropertyName      awake    System.String       Boolean       True   System.Boolean  PropertyName          n    System.String        Double  1994.0226    System.Double  PropertyName       note    System.String    ArrayStart                                    String       life    System.String        String         is    System.String        String        but    System.String        String          a    System.String        String      dream    System.String      ArrayEnd                                 ObjectEnd