using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
using System.Collections.Generic;
using System.Text;
namespace GTA.DC.MTAC.Client.BLL
{
/// <summary>
/// 描述：XML操作类
/// 作者：
/// 时间：2011-5-18
/// </summary>
public class XmlHelper
{
/// <summary>
/// 读取数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</param>
/// <returns>string</returns>
/**************************************************
* 使用示列:
* XmlHelper.Read(path, "/Node", "")
* XmlHelper.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")
************************************************/
public string Read(string path, string node, string attribute)
{
string value = "";
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);
}
catch { }
return value;
}
/// <summary>
/// 插入数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>
/// <param name="attribute">属性名，非空时插入该元素属性值，否则插入元素值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "Element", "", "Value")
* XmlHelper.Insert(path, "/Node", "Element", "Attribute", "Value")
* XmlHelper.Insert(path, "/Node", "", "Attribute", "Value")
************************************************/
public void Insert(string path, string node, string element, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
if (element.Equals(""))
{
if (!attribute.Equals(""))
{
XmlElement xe = (XmlElement)xn;
xe.SetAttribute(attribute, value);
}
}
else
{
XmlElement xe = doc.CreateElement(element);
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
xn.AppendChild(xe);
}
doc.Save(path);
}
catch { }
}
/// <summary>
/// 修改数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "", "Value")
* XmlHelper.Insert(path, "/Node", "Attribute", "Value")
************************************************/
public void Update(string path, string node, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
doc.Save(path);
}
catch { }
}
/// <summary>
/// 删除数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Delete(path, "/Node", "")
* XmlHelper.Delete(path, "/Node", "Attribute")
************************************************/
public void Delete(string path, string node, string attribute)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xn.ParentNode.RemoveChild(xn);
else
xe.RemoveAttribute(attribute);
doc.Save(path);
}
catch { }
}
private XmlDocument xmlDoc;
/// <summary>
/// 加载xml文件
/// </summary>
/// <param name="path">xml文件的物理路径</param>
private void LoadXml(string path, string node_root)
{
xmlDoc = new XmlDocument();
//判断xml文件是否存在
if (!System.IO.File.Exists(path))
{
//创建xml 声明节点
XmlNode xmlnode = xmlDoc.CreateNode(System.Xml.XmlNodeType.XmlDeclaration, "", "");
//添加上述创建和 xml声明节点
xmlDoc.AppendChild(xmlnode);
//创建xml dbGuest 元素（根节点）
XmlElement xmlelem = xmlDoc.CreateElement("", node_root, "");
xmlDoc.AppendChild(xmlelem);
try
{
xmlDoc.Save(path);
}
catch (Exception ex)
{
throw ex;
}
xmlDoc.Load(path);
}
else
{
//加载xml文件
xmlDoc.Load(path);
}
GC.Collect();
}
/// <summary>
/// 添加xml子节点
/// </summary>
/// <param name="path">xml文件的物理路径</param>
/// <param name="node_root">根节点名称</param>
/// <param name="node_name">添加的子节点名称</param>
/// <param name="node_text">子节点文本</param>
public void addElement(string path, string node_root, string node_name, string node_text, string att_name, string att_value)
{
LoadXml(path, node_root);
XmlNodeList nodeList = xmlDoc.SelectSingleNode(node_root).ChildNodes;//获取bookstore节点的所有子节点
//判断是否有节点,有节点就遍历所有子节点,看看有没有重复节点,没节点就添加一个新节点
if (nodeList.Count > 0)
{
foreach (XmlNode xn in nodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute(att_name) != att_value)
{
XmlNode xmldocSelect = xmlDoc.SelectSingleNode(node_root); //选中根节点
XmlElement son_node = xmlDoc.CreateElement(node_name); //添加子节点
son_node.SetAttribute(att_name, att_value); //设置属性
son_node.InnerText = node_text; //添加节点文本
xmldocSelect.AppendChild(son_node); //添加子节点
xmlDoc.Save(path); //保存xml文件
break;
}
}
}
else
{
XmlNode xmldocSelect = xmlDoc.SelectSingleNode(node_root); //选中根节点
XmlElement son_node = xmlDoc.CreateElement(node_name); //添加子节点
son_node.SetAttribute(att_name, att_value); //设置属性
son_node.InnerText = node_text; //添加节点文本
xmldocSelect.AppendChild(son_node); //添加子节点
xmlDoc.Save(path); //保存xml文件
}
}
/// <summary>
/// 修改节点的内容
/// </summary>
/// <param name="path">xml文件的物理路径</param>
/// <param name="node_root">根节点名称</param>
/// <param name="new_text">节点的新内容</param>
/// <param name="att_name">节点的属性名</param>
/// <param name="att_value">节点的属性值</param>
public void UpdateElement(string path, string node_root, string new_text, string att_name, string att_value)
{
LoadXml(path, node_root);
XmlNodeList nodeList = xmlDoc.SelectSingleNode(node_root).ChildNodes;//获取bookstore节点的所有子节点
foreach (XmlNode xn in nodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute(att_name) == att_value)
{
xe.InnerText = new_text; //内容赋值
xmlDoc.Save(path);//保存
break;
}
}
}
/// <summary>
/// 删除节点
/// </summary>
/// <param name="path">xml文件的物理路径</param>
/// <param name="node_root">根节点名称</param>
/// <param name="att_name">节点的属性名</param>
/// <param name="att_value">节点的属性值</param>
public void deleteNode(string path, string node_root, string att_name, string att_value)
{
LoadXml(path, node_root);
XmlNodeList nodeList = xmlDoc.SelectSingleNode(node_root).ChildNodes;
XmlNode root = xmlDoc.SelectSingleNode(node_root);
foreach (XmlNode xn in nodeList)
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute(att_name) == att_value)
{
//xe.RemoveAttribute("name");//删除name属性
xe.RemoveAll();//删除该节点的全部内容
root.RemoveChild(xe);
xmlDoc.Save(path);//保存
break;
}
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="filePath"></param>
/// <param name="obj"></param>
public static void Serialize<T>(string filePath, T[] array) where T : new()
{
if (string.IsNullOrEmpty(filePath) ||
array == null || array.Length == 0)
{
return;
}
try
{
XmlSerializerFactory xmlSerializerFactory = new XmlSerializerFactory();
XmlSerializer xmlSerializer =
xmlSerializerFactory.CreateSerializer(array.GetType(), typeof(T).Name);
Stream stream = new FileStream(filePath, FileMode.Create);
xmlSerializer.Serialize(stream, array);
stream.Close();
}
catch
{
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="filePath"></param>
/// <param name="obj"></param>
public static void Serialize<T>(string filePath, List<T> array) where T : new()
{
if (string.IsNullOrEmpty(filePath) ||
array == null || array.Count == 0)
{
return;
}
try
{
XmlSerializerFactory xmlSerializerFactory = new XmlSerializerFactory();
XmlSerializer xmlSerializer =
xmlSerializerFactory.CreateSerializer(array.GetType(), typeof(T).Name);
Stream stream = new FileStream(filePath, FileMode.Create);
xmlSerializer.Serialize(stream, array);
stream.Close();
}
catch
{
}
}
/// <summary>
///
/// </summary>
/// <param name="filePath"></param>
/// <param name="obj"></param>
public static void Serialize(string filePath, object obj)
{
if (string.IsNullOrEmpty(filePath) || obj == null)
{
return;
}
try
{
XmlSerializerFactory xmlSerializerFactory = new XmlSerializerFactory();
XmlSerializer xmlSerializer =
xmlSerializerFactory.CreateSerializer(obj.GetType(), obj.GetType().Name);
Stream stream = new FileStream(filePath, FileMode.Create);
xmlSerializer.Serialize(stream, obj);
stream.Close();
}
catch
{
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="filePath"></param>
/// <returns></returns>
public static List<T> Deserialize<T>(string filePath) where T : new()
{
List<T> results = new List<T>();
if (string.IsNullOrEmpty(filePath) || !File.Exists(filePath))
{
return results;
}
object obj = null;
try
{
XmlSerializerFactory xmlSerializerFactory = new XmlSerializerFactory();
XmlSerializer xmlSerializer =
xmlSerializerFactory.CreateSerializer(typeof(T[]), typeof(T).Name);
Stream stream = new FileStream(filePath, System.IO.FileMode.Open);
obj = xmlSerializer.Deserialize(stream);
stream.Close();
results.AddRange(obj as T[]);
}
catch
{
}
return results;
}
/// <summary>
///
/// </summary>
/// <param name="filePath"></param>
/// <param name="targetType"></param>
/// <returns></returns>
public static object Deserialize(string filePath, Type targetType)
{
if (string.IsNullOrEmpty(filePath) || !File.Exists(filePath)
|| targetType == null)
{
return null;
}
object obj = null;
try
{
XmlSerializerFactory xmlSerializerFactory = new XmlSerializerFactory();
XmlSerializer xmlSerializer =
xmlSerializerFactory.CreateSerializer(targetType, targetType.Name);
Stream stream = new FileStream(filePath, FileMode.Open);
obj = xmlSerializer.Deserialize(stream);
stream.Close();
}
catch
{
}
return obj;
}
/**/
/// <summary>
/// 将DataTable对象转换成XML字符串
/// </summary>
/// <param name="dt">DataTable对象</param>
/// <returns>XML字符串</returns>
public static string CDataToXml(DataTable dt)
{
if (dt != null)
{
MemoryStream ms = null;
XmlTextWriter XmlWt = null;
try
{
ms = new MemoryStream();
//根据ms实例化XmlWt
XmlWt = new XmlTextWriter(ms, Encoding.Unicode);
//获取ds中的数据
dt.WriteXml(XmlWt);
int count = (int)ms.Length;
byte[] temp = new byte[count];
ms.Seek(0, SeekOrigin.Begin);
ms.Read(temp, 0, count);
//返回Unicode编码的文本
UnicodeEncoding ucode = new UnicodeEncoding();
string returnValue = ucode.GetString(temp).Trim();
return returnValue;
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
//释放资源
if (XmlWt != null)
{
XmlWt.Close();
ms.Close();
ms.Dispose();
}
}
}
else
{
return "";
}
}
/// <summary>
/// 把XML字符串转成DataTable
/// </summary>
/// <param name="xmlData"></param>
/// <returns></returns>
public static DataTable ConvertXMLToDataSet(string xmlData)
{
StringReader stream = null;
XmlTextReader reader = null;
try
{
DataSet xmlDS = new DataSet();
stream = new StringReader(xmlData);
reader = new XmlTextReader(stream);
xmlDS.ReadXml(reader);
return xmlDS.Tables[0];
}
catch (Exception ex)
{
string strTest = ex.Message;
return null;
}
finally
{
if (reader != null)
reader.Close();
}
}
}
}
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