Unity3d XML的创建、更新、添加、删除和读取

关于Xml文件的相关操作

创建、更新、添加、删除、读取

using System.IO;
using System.Xml;
using UnityEngine;

public class XmlOperation : MonoBehaviour
{
    private string path = "";

    void Awake()
    {
        path= Application.dataPath + "/test.xml";
    }

    void Start()
    {
        //CreateXml(path);
        //UpdateXml(path,"0");
        //AddXml(path);
        //DeleteXml(path,"1001");
        ReadXml(path);
    }

    /// <summary>
    /// 根据路径来创建xml文件
    /// </summary>
    /// <param name="filePath"></param>
    public void CreateXml(string filePath)
    {
        if (!File.Exists(filePath))
        {
            // 创建xml文档实例
            XmlDocument xmlDoc = new XmlDocument();
            // 创建根节点
            XmlElement root = xmlDoc.CreateElement("transforms");
            // 创建第一个子节点
            XmlElement elmXml = xmlDoc.CreateElement("rotation");
            // 设置节点属性
            elmXml.SetAttribute("id", "0");
            elmXml.SetAttribute("name", "first");
            // 创建第一子节点的子节点
            XmlElement rotation_x = xmlDoc.CreateElement("x");
            rotation_x.InnerText = "0";
            XmlElement rotation_y = xmlDoc.CreateElement("y");
            rotation_y.InnerText = "1";
            XmlElement rotation_z = xmlDoc.CreateElement("z");
            rotation_z.InnerText = "2";

            // 排序
            elmXml.AppendChild(rotation_x);
            elmXml.AppendChild(rotation_y);
            elmXml.AppendChild(rotation_z);
            root.AppendChild(elmXml);
            xmlDoc.AppendChild(root);

            xmlDoc.Save(filePath);
        }
    }

    /// <summary>
    /// 更新指定id的xml数据
    /// </summary>
    /// <param name="path"></param>
    /// <param name="id"></param>
    public void UpdateXml(string path, string id)
    {
        if (File.Exists(path))
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(path);

            XmlNodeList nodes = xmlDoc.SelectSingleNode("transforms").ChildNodes;

            foreach (XmlElement xe in nodes)
            {
                if (xe.GetAttribute("id") == id)
                {
                    xe.SetAttribute("id", "1001");

                    foreach (XmlElement xx1 in xe.ChildNodes)
                    {
                        if (xx1.Name == "x")
                            xx1.InnerText = "1001";
                    }
                    break;
                }
            }

            xmlDoc.Save(path);
        }
    }
    /// <summary>
    /// 添加一条数据
    /// </summary>
    /// <param name="path"></param>
    public void AddXml(string path)
    {
        if (File.Exists(path))
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(path);
            XmlNode root = xmlDoc.SelectSingleNode("transforms");
            XmlElement elmNew = xmlDoc.CreateElement("rotation");
            elmNew.SetAttribute("id", "1");
            elmNew.SetAttribute("name", "yusong");

            XmlElement rotation_X = xmlDoc.CreateElement("x");
            rotation_X.InnerText = "0";
            XmlElement rotation_Y = xmlDoc.CreateElement("y");
            rotation_Y.InnerText = "1";
            XmlElement rotation_Z = xmlDoc.CreateElement("z");
            rotation_Z.InnerText = "2";

            elmNew.AppendChild(rotation_X);
            elmNew.AppendChild(rotation_Y);
            elmNew.AppendChild(rotation_Z);
            root.AppendChild(elmNew);
            xmlDoc.AppendChild(root);
            xmlDoc.Save(path);
        }
    }
    /// <summary>
    /// 删除数据
    /// </summary>
    /// <param name="path"></param>
    /// <param name="id"></param>
    public void DeleteXml(string path, string id)
    {
        if (File.Exists(path))
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(path);
            XmlNodeList nodeList = xmlDoc.SelectSingleNode("transforms").ChildNodes;
            foreach (XmlElement xe in nodeList)
            {
                if (xe.GetAttribute("id") == id)
                {
                    // 移除指定id的属性
                    xe.RemoveAttribute("id");
                }

                foreach (XmlElement x1 in xe.ChildNodes)
                {
                    // 移除所有z的value
                    if (x1.Name == "z")
                    {
                        x1.RemoveAll();

                    }
                }
            }
            xmlDoc.Save(path);
        }
    }

    /// <summary>
    /// 读取xml
    /// </summary>
    /// <param name="path"></param>
    public void ReadXml(string path)
    {
        if (File.Exists(path))
        {
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(path);
            XmlNodeList nodes = xmlDoc.SelectSingleNode("transforms").ChildNodes;
            foreach (XmlElement xe in nodes)
            {
                Debug.Log("ID: " + xe.GetAttribute("id"));
                Debug.Log("Name: "+xe.GetAttribute("name"));

                string element = "";
                foreach (XmlElement x in xe)
                {
                    element= element + "," + x.InnerText;
                }
                Debug.Log(element);
            }
        }
    }
}