Unity3D ConfigMan.cs For XML File

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using UnityEngine;

namespace Assets.Scripts.Models
{
    public class ConfigMan
    {
        /// <summary>
        /// 读取指定节点的属性
        /// </summary>
        /// <param name="nodeName">节点名</param>
        /// <param name="attributeName">属性名</param>
        /// <returns></returns>
        public static string ReadNode(string nodeName,string attributeName) {
            //Debug.Log("Application.dataPath:" + Application.dataPath);
            //Debug.Log("Application.streamingAssetsPath:" + Application.streamingAssetsPath);
            //Debug.Log("Application.consoleLogPath:" + Application.consoleLogPath);
            //Debug.Log("Application.temporaryCachePath:" + Application.temporaryCachePath);

            var path = Application.dataPath + "/Configrations/MyConfig.xml";
            var path1 = Application.streamingAssetsPath + "/Configrations/MyConfig.xml";

            //StreamReader sr = new StreamReader(newPath, Encoding.UTF8);

            /**判断文件是否存在**/
            if (File.Exists(path))
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(path);//载入对应的配置文件
                XmlNodeList configs = doc.SelectSingleNode("Root").ChildNodes;//读取根节点下所有子节点

                foreach (XmlElement item in configs)
                {
                    if (item.HasAttribute(attributeName) && item.Name == nodeName)
                    {
                        return item.GetAttribute(attributeName);
                    }
                }
                return "";
            }
            else {
                return "";
            }

        }
        /// <summary>
        /// 创建新的节点
        /// </summary>
        public void CreateNode() { }

        /// <summary>
        /// 更新已有节点属性值
        /// </summary>
        /// <param name="name">节点名称</param>
        /// <param name="attributeName">要修改的属性名称</param>
        /// <param name="value">属性值</param>
        public static void UpdateNode(string name, string attributeName, string value) {
            string path = Application.dataPath + "/Configrations/MyConfig.xml";
            XmlDocument doc = new XmlDocument();
            doc.Load(path);//载入xml文件
            XmlNodeList nodes=doc.SelectSingleNode("Root").ChildNodes;//获取根节点下所有子节点
            try
            {
                if (nodes.Count > 0) {
                    //如果目录下有内容
                    foreach (XmlElement e in nodes) {
                        if (e.Name == name&& e.HasAttribute(attributeName)) {
                            e.SetAttribute(attributeName, value);//update the value
                            doc.Save(path);//save file
                            break;
                        }
                    }
                }
            }
            catch (Exception ex) {
                Debug.Log(ex.GetBaseException());
            }
        }
    }
}