Operation of JSON file

【JSON file 】

1、 Save the file （ serialize ）, Save program objects locally

// Program object class 
 public class Paths
    {
        public string Name;
        public List<Vector3> position;
        public List<Vector3> rotation;
    }

    Paths paths;
    /// <summary>
    ///  Initialize the path class 
    /// </summary>
    void InitPaths()
    {
        paths = new Paths();
        paths.Name = " This is a test ";
        paths.position = InputData.listPosition;
        paths.rotation = InputData.listRotation;
    }

    /// <summary>
    ///  preservation json
    /// </summary>
    /// <param name="pathName"></param>
    //private void SaveJson(string pathName)
    private void SaveJson()
    {
        //string savePath = @"C:\Users\T01015\Desktop\Test01.json";
        //string savePath = @"D:\AutoPath";
        if (!Directory.Exists(savePath))
        {
            // Automatically create a folder when it does not exist 
            Directory.CreateDirectory(savePath);
        }

        InitPaths();
        DirectoryInfo dir = new DirectoryInfo(savePath);

        string json = JsonUtility.ToJson(paths);
        File.WriteAllText(savePath + @"\" + " programme " + dir.GetFiles().Length + ".json", json, Encoding.UTF8);

        print(" Saved address ：" + savePath);
    }

2、 Read the file （ Deserialization ）, Convert a file to an object for program use

 void LoadJson(string txtName)
    {
        // Clear the scene roadmap 
        for (int i = 0; i < pointPoll.childCount; i++)
        {
            Destroy(pointPoll.GetChild(i).gameObject);
        }

        string str = File.ReadAllText(savePath + @"\" + txtName + ".json" , Encoding.Default);
        paths = JsonUtility.FromJson<Paths>(str);// analysis json

        print(paths.Name);
        foreach (Vector3 item in paths.position)
        {
            print(item.x+","+item.y+","+item.z);
        }
    }

Pit point ： If you have created a collection object class , Then the object class should be marked [Serializable], Otherwise, the content cannot be parsed . for example ：

// Json Resolve to this object 
public class Response
{
    public List<Student> list;
}

[Serializable]
public class Student
{
    public int id;
    public string name;
}