XML与JSON在开发中非常重要, 其实核心就是处理字符串。 一个是XML的字符串一个是JSON的字符串,尤其是在处理网络请求的时候,肯定是要用的。另外现在JSON非常的流行,我写了一个简单的例子融合了XML与JSON的合成与解析,希望大家喜欢!
首先注意头文件,LitJson是处理JSON的第三方库,最后我会给出下载地址。
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
using System.IO;
using System.Text;
using LitJson;
1、生成XML
public void createXml()
{
//xml保存的路径,这里放在Assets路径 注意路径。
string filepath = Application.dataPath + @"/my.xml";
//继续判断当前路径下是否有该文件
if(!File.Exists (filepath))
{
//创建XML文档实例
XmlDocument xmlDoc = new XmlDocument();
//创建root节点,也就是最上一层节点
XmlElement root = xmlDoc.CreateElement("transforms");
//继续创建下一层节点
XmlElement elmNew = xmlDoc.CreateElement("rotation");
//设置节点的两个属性 ID 和 NAME
elmNew.SetAttribute("id","0");
elmNew.SetAttribute("name","momo");
//继续创建下一层节点
XmlElement rotation_X = xmlDoc.CreateElement("x");
//设置节点中的数值
rotation_X.InnerText = "0";
XmlElement rotation_Y = xmlDoc.CreateElement("y");
rotation_Y.InnerText = "1";
XmlElement rotation_Z = xmlDoc.CreateElement("z");
rotation_Z.InnerText = "2";
//这里在添加一个节点属性,用来区分。。
rotation_Z.SetAttribute("id","1");
//把节点一层一层的添加至XMLDoc中 ,请仔细看它们之间的先后顺序,这将是生成XML文件的顺序
elmNew.AppendChild(rotation_X);
elmNew.AppendChild(rotation_Y);
elmNew.AppendChild(rotation_Z);
root.AppendChild(elmNew);
xmlDoc.AppendChild(root);
//把XML文件保存至本地
xmlDoc.Save(filepath);
Debug.Log("createXml OK!");
}
}
运行结果
<transforms>
<rotation id="0" name="momo">
<x>0</x>
<y>1</y>
<z id="1">2</z>
</rotation>
</transforms>
2.更新XML文件以其中某个节点名称做条件,当查询到时更新该节点public void UpdateXml() { string filepath = Application.dataPath + @"/my.xml"; if(File.Exists (filepath)) { XmlDocument xmlDoc = new XmlDocument(); //根据路径将XML读取出来 xmlDoc.Load(filepath); //得到transforms下的所有子节点 XmlNodeList nodeList=xmlDoc.SelectSingleNode("transforms").ChildNodes; //遍历所有子节点 foreach(XmlElement xe in nodeList) { //拿到节点中属性ID =0的节点 if(xe.GetAttribute("id")=="0") { //更新节点属性 xe.SetAttribute("id","1000"); //继续遍历 foreach(XmlElement x1 in xe.ChildNodes) { if(x1.Name=="z") { //这里是修改节点名称对应的数值,而上面的拿到节点连带的属性。。。 x1.InnerText="update00000"; } } break; } } xmlDoc.Save(filepath); Debug.Log("UpdateXml OK!"); } }
运行结果
<transforms> <rotation id="1000" name="momo"> <x>0</x> <y>1</y> <z id="1">update00000</z> </rotation> </transforms>
3.添加XML重复的地方我就不解释拉。public void AddXml() { string filepath = Application.dataPath + @"/my.xml"; if(File.Exists (filepath)) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(filepath); 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"; rotation_X.SetAttribute("id","1"); 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(filepath); Debug.Log("AddXml OK!"); } }
运行结果
<transforms> <rotation id="1000" name="momo"> <x>0</x> <y>1</y> <z id="1">update00000</z> </rotation> <rotation id="1" name="yusong"> <x id="1">0</x> <y>1</y> <z>2</z> </rotation> </transforms>
4.删除XML
public void deleteXml() { string filepath = Application.dataPath + @"/my.xml"; if(File.Exists (filepath)) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(filepath); XmlNodeList nodeList=xmlDoc.SelectSingleNode("transforms").ChildNodes; foreach(XmlElement xe in nodeList) { if(xe.GetAttribute("id")=="1") { xe.RemoveAttribute("id"); } foreach(XmlElement x1 in xe.ChildNodes) { if(x1.Name == "z") { x1.RemoveAll(); } } } xmlDoc.Save(filepath); Debug.Log("deleteXml OK!"); } }
运行结果
<transforms> <rotation id="1000" name="momo"> <x>0</x> <y>1</y> <z> </z> </rotation> <rotation name="yusong"> <x id="1">0</x> <y>1</y> <z> </z> </rotation> </transforms>
4.解析与输出上面的XML
public void showXml() { string filepath = Application.dataPath + @"/my.xml"; if(File.Exists (filepath)) { XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(filepath); XmlNodeList nodeList=xmlDoc.SelectSingleNode("transforms").ChildNodes; //遍历每一个节点,拿节点的属性以及节点的内容 foreach(XmlElement xe in nodeList) { Debug.Log("Attribute :" + xe.GetAttribute("name")); Debug.Log("NAME :" + xe.Name); foreach(XmlElement x1 in xe.ChildNodes) { if(x1.Name == "y") { Debug.Log("VALUE :" + x1.InnerText); } } } Debug.Log("all = " + xmlDoc.OuterXml); } }
运行结果(点击图片最大化)接着是处理JSON5.解析JSON字符串显示字典键值public void ResolveJson() { //定义的JSON字符串,注意JSON的格式 string str = @" { ""Name"" : ""yusong"", ""Age"" : 26, ""Birthday"" : ""1986-11-21"", ""Thumbnail"":[ { ""Url"": ""http://xuanyusong.com"", ""Height"": 256, ""Width"": ""200"" }, { ""Url"": ""http://baidu.com"", ""Height"": 1024, ""Width"": ""500"" } ] }"; //这里是解析,包括整形与字符串 JsonData jd = JsonMapper.ToObject(str); Debug.Log("name = " + (string)jd["Name"]); Debug.Log("Age = " + (int)jd["Age"]); Debug.Log("Birthday = " + (string)jd["Birthday"]); JsonData jdItems = jd["Thumbnail"]; for (int i = 0; i < jdItems.Count; i++) { Debug.Log("URL = " + jdItems[i]["Url"]); Debug.Log("Height = " + (int)jdItems[i]["Height"]); Debug.Log("Width = " + jdItems[i]["Width"]); } }
运行结果6.合成JSON字符串,先合成 然后在输出。public void MergerJson() { StringBuilder sb = new StringBuilder (); JsonWriter writer = new JsonWriter (sb); writer.WriteObjectStart (); writer.WritePropertyName ("Name"); writer.Write ("yusong"); writer.WritePropertyName ("Age"); writer.Write (26); writer.WritePropertyName ("Girl"); writer.WriteArrayStart (); writer.WriteObjectStart(); writer.WritePropertyName("name"); writer.Write("ruoruo"); writer.WritePropertyName("age"); writer.Write(24); writer.WriteObjectEnd (); writer.WriteObjectStart(); writer.WritePropertyName("name"); writer.Write("momo"); writer.WritePropertyName("age"); writer.Write(26); writer.WriteObjectEnd (); writer.WriteArrayEnd(); writer.WriteObjectEnd (); Debug.Log(sb.ToString ()); JsonData jd = JsonMapper.ToObject(sb.ToString ()); Debug.Log("name = " + (string)jd["Name"]); Debug.Log("Age = " + (int)jd["Age"]); JsonData jdItems = jd["Girl"]; for (int i = 0; i < jdItems.Count; i++) { Debug.Log("Girl name = " + jdItems[i]["name"]); Debug.Log("Girl age = " + (int)jdItems[i]["age"]); } }
运行结果雨松MOMO祝大家学习愉快,哈哈哈。