Unity Excel转Json自动生成实体类

不支持数组，字典等集合数据结构，可额外修改。Newtonsoft以及epplus要事先加载进unity中。


设计为一张表格，多个sheet。

    /* 一张xlsx里面有多张表格，因为实际游戏中使用的是json文件，所以生成的时候我只用一张xlsx
     * 一张sheet就是一个数据集合 
     * 根据sheet表字段生成对应的数据集合json
     * 创建json文件同时创建实体类
     */
    public class ExcelWindow : EditorWindow
    {
        private string txt_ExcelName = "tab1.xlsx"; //表格名称
        private string txt_JsonSavePath = "Json";
        private string txt_EntitySavePath = "Entity";
        private Vector2 scrollPos;
        [MenuItem("Window/ExcelToJson")]
        static void OpenWindow()
        {
            ExcelWindow window = (ExcelWindow)EditorWindow.GetWindow(typeof(ExcelWindow));
            window.Show();
        }

        private void OnGUI()
        {
            scrollPos = EditorGUILayout.BeginScrollView(scrollPos);

            EditorGUILayout.BeginHorizontal();
            GUILayout.Label("表格名称: ");
            txt_ExcelName = GUILayout.TextField(txt_ExcelName);
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            GUILayout.Label("Json保存路径: ");
            txt_JsonSavePath = GUILayout.TextField(txt_JsonSavePath);
            EditorGUILayout.EndHorizontal();

            if (GUILayout.Button("生成实体类"))
            {
                CreateEntities();
            }
            if (GUILayout.Button("生成Json"))
            {
                ExcelToJson();
            }
            EditorGUILayout.EndScrollView();
        }

        private void ExcelToJson()
        {
            if (!string.IsNullOrEmpty(txt_ExcelName))
            {
                string filepath = Application.dataPath + "/" + txt_ExcelName;
                string headPath = $"{Application.dataPath}/{txt_JsonSavePath}";
                using (FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read))
                {
                    using (ExcelPackage ep = new ExcelPackage(fs))
                    {
                        //获得所有工作表
                        ExcelWorksheets workSheets = ep.Workbook.Worksheets;
                        List<System.Object> lst = new List<object>();

                        //遍历所有工作表
                        for (int i = 1; i <= workSheets.Count; i++)
                        {
                            //当前工作表 
                            ExcelWorksheet sheet = workSheets[i];
                            //初始化集合
                            lst.Clear();
                            int columnCount = sheet.Dimension.End.Column;
                            int rowCount = sheet.Dimension.End.Row;
                            //根据实体类创建对象集合序列化到json中
                            for (int z = 4; z <= rowCount; z++)
                            {
                                Assembly ab = Assembly.Load("Assembly-CSharp"); //要注意对面在那个程序集里面dll
                                Type type = ab.GetType($"Entity.{sheet.Name}");
                                if(type==null)
                                {
                                    Debug.LogError("你还没有创建对应的实体类!");
                                    return;
                                }
                                if (!Directory.Exists(headPath))
                                    Directory.CreateDirectory(headPath);
                                object o = ab.CreateInstance(type.ToString());
                                for (int j = 1; j <= columnCount; j++)
                                {
                                    FieldInfo fieldInfo = type.GetField(sheet.Cells[i, j].Text); //先获得字段信息，方便获得字段类型
                                    object value = Convert.ChangeType(sheet.Cells[z, j].Text, fieldInfo.FieldType);
                                    type.GetField(sheet.Cells[1, j].Text).SetValue(o, value);
                                }
                                lst.Add(o);
                            }
                            //写入json文件
                            string jsonPath = $"{headPath}/{sheet.Name}.json";
                            if (!File.Exists(jsonPath))
                            {
                                File.Create(jsonPath).Dispose();
                            }
                            File.WriteAllText(jsonPath, JsonConvert.SerializeObject(lst));
                        }
                    }
                }
                AssetDatabase.Refresh();
            }
        }
        void CreateEntities()
        {
            if (!string.IsNullOrEmpty(txt_ExcelName))
            {
                string filepath = Application.dataPath + "/" + txt_ExcelName;
                using (FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read))
                {
                    using (ExcelPackage ep = new ExcelPackage(fs))
                    {
                        //获得所有工作表
                        ExcelWorksheets workSheets = ep.Workbook.Worksheets;
                        //遍历所有工作表
                        for (int i = 1; i <= workSheets.Count; i++)
                        {
                            CreateEntity(workSheets[i]);
                        }
                        AssetDatabase.Refresh();
                    }
                }
            }
        }
        void CreateEntity(ExcelWorksheet sheet)
        {
            string dir = $"{Application.dataPath}/{txt_EntitySavePath}";
            string path = $"{dir}/{sheet.Name}.cs";
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("namespace Entity");
            sb.AppendLine("{");
            sb.AppendLine($"\tpublic class {sheet.Name}");
            sb.AppendLine("\t{");
            //遍历sheet首行每个字段描述的值
            Debug.Log("column = " + sheet.Dimension.End.Column);
            Debug.Log("row = " + sheet.Dimension.End.Row);
            for (int i = 1; i <= sheet.Dimension.End.Column; i++)
            {
                sb.AppendLine("\t\t/// <summary>");
                sb.AppendLine($"\t\t///{sheet.Cells[3, i].Text}");
                sb.AppendLine("\t\t/// </summary>");
                sb.AppendLine($"\t\tpublic {sheet.Cells[2, i].Text} {sheet.Cells[1, i].Text};");
            }
            sb.AppendLine("\t}");
            sb.AppendLine("}");
            try
            {
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                if (!File.Exists(path))
                {
                    File.Create(path).Dispose(); //避免资源占用
                }
                File.WriteAllText(path, sb.ToString());
            }
            catch (System.Exception e)
            {
                Debug.LogError($"Excel转json时创建对应的实体类出错，实体类为：{sheet.Name},e:{e.Message}");
            }
        }
    }