08:55:14 2012-03-19 public static class XmlHelper
{
#region 实体类序列化成xml
/// <summary>
/// 实体类序列化成xml
/// </summary>
/// <param name="enitities">The enitities.</param>
/// <param name="headtag">The headtag.</param>
/// <returns></returns>
public static string ObjListToXml<T>(List<T> enitities, string headtag)
{
StringBuilder sb = new StringBuilder();
PropertyInfo[] propinfos = null;
sb.AppendLine("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
sb.AppendLine("<" + headtag + ">");
foreach (T obj in enitities)
{
//初始化propertyinfo
if (propinfos == null)
{
Type objtype = obj.GetType();
propinfos = objtype.GetProperties();
}
sb.AppendLine("<item>");
foreach (PropertyInfo propinfo in propinfos)
{
sb.Append("<");
sb.Append(propinfo.Name);
sb.Append(">");
sb.Append(propinfo.GetValue(obj, null));
sb.Append("</");
sb.Append(propinfo.Name);
sb.AppendLine(">");
}
sb.AppendLine("</item>");
}
sb.AppendLine("</" + headtag + ">");
return sb.ToString();
}
#endregion
#region 使用XML初始化实体类容器
/// <summary>
/// 使用XML初始化实体类容器
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="typename">The typename.</param>
/// <param name="xml">The XML.</param>
/// <param name="headtag">The headtag.</param>
/// <returns></returns>
public static List<T> XmlToObjListByNode<T>(string xml, string headtag)
where T : new()
{
List<T> list = new List<T>();
XmlDocument doc = new XmlDocument();
PropertyInfo[] propinfos = null;
doc.LoadXml(xml);
XmlNodeList nodelist = doc.GetElementsByTagName(headtag);
foreach (XmlNode node in nodelist)
{
T entity = new T();
//初始化propertyinfo
if (propinfos == null)
{
Type objtype = entity.GetType();
propinfos = objtype.GetProperties();
}
//填充entity类的属性
foreach (PropertyInfo propinfo in propinfos)
{
XmlNode cnode = node.SelectSingleNode(propinfo.Name);
if (cnode == null)
continue;
string v = cnode.InnerText;
if (v != null)
propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null);
}
list.Add(entity);
}
return list;
}
#endregion
#region 使用XML初始化实体类容器
/// <summary>
/// 使用XML初始化实体类容器
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="typename">The typename.</param>
/// <param name="xml">The XML.</param>
/// <param name="headtag">The headtag.</param>
/// <returns></returns>
public static List<T> XmlToObjListByAttr<T>(string xml, string headtag)
where T : new()
{
List<T> list = new List<T>();
XmlDocument doc = new XmlDocument();
PropertyInfo[] propinfos = null;
doc.LoadXml(xml);
XmlNodeList nodelist = doc.GetElementsByTagName(headtag);
foreach (XmlNode node in nodelist)
{
T entity = new T();
//初始化propertyinfo
if (propinfos == null)
{
Type objtype = entity.GetType();
propinfos = objtype.GetProperties();
}
//填充entity类的属性
foreach (PropertyInfo propinfo in propinfos)
{
XmlNode cnode = node.Attributes[propinfo.Name.ToLower()];
if (cnode == null)
continue;
string v = cnode.InnerText;
if (v != null)
propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null);
}
list.Add(entity);
}
return list;
}
#endregion
/// <summary>
/// 将对象转换为二进制流
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static byte[] ConvertToXmlStream(this object item)
{
var serializer = new XmlSerializer(item.GetType());
using (MemoryStream ms = new MemoryStream())
{
serializer.Serialize(ms, item);
var bytes = ms.ToArray();
ms.Close();
return bytes;
}
}
/// <summary>
/// 在Xml源中查找指定节点文本
/// </summary>
/// <param name="originXml"></param>
/// <param name="nodeTag"></param>
/// <returns></returns>
public static List<string> GetNodeInnerText(string originXml, string nodeTag)
{
List<string> strList = new List<string>();
XmlDocument doc = new XmlDocument();
doc.LoadXml(originXml);
XmlNodeList nodes = doc.GetElementsByTagName(nodeTag);
for (int i = 0; i < nodes.Count; i++)
{
XmlNode node = nodes[i];
strList.Add(node.InnerText);
}
return strList;
}
/// <summary>
/// 使用XML初始化实体类容器
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="typename">The typename.</param>
/// <param name="xml">The XML.</param>
/// <param name="headtag">The headtag.</param>
/// <returns></returns>
public static List<T> XmlToObjList<T>(string xml, string headtag)
where T : new()
{
List<T> list = new List<T>();
XmlDocument doc = new XmlDocument();
PropertyInfo[] propinfos = null;
doc.LoadXml(xml);
XmlNodeList nodelist = doc.GetElementsByTagName(headtag);
foreach (XmlNode nodef in nodelist)
{
XmlNodeList itemNodelist = nodef.ChildNodes;
foreach (XmlNode node in itemNodelist)
{
T entity = new T();
//初始化propertyinfo
if (propinfos == null)
{
Type objtype = entity.GetType();
propinfos = objtype.GetProperties();
}
//填充entity类的属性
foreach (PropertyInfo propinfo in propinfos)
{
XmlNode cnode = node.SelectSingleNode(propinfo.Name);
if (cnode == null)
continue;
string v = cnode.InnerText;
if (v != null)
propinfo.SetValue(entity, Convert.ChangeType(v, propinfo.PropertyType), null);
}
list.Add(entity);
}
}
return list;
}
}
