asp.net类序列化生成xml文件实例详解

本文实例讲述了asp.net类序列化生成xml文件的方法。分享给大家供大家参考，具体如下：

根据设计的需求需要开发多个商品的API 原XML文件如下：

<urlset>
 <url>
  <loc>http://www.xxxxx.com/todaydetials.aspx?id=143</loc>
  <data>
   <display>
    <website>爱购114</website>
    <siteurl>http://www.xxxxx.com/</siteurl>
    <city>杭州</city>
    <webSitetitle></webSitetitle>
    <image></image>
    <startTime>2011-2-9</startTime>
    <endTime>2011-2-15</endTime>
    <value>3880</value>
    <price>2088</price>
    <rebate>0.53</rebate>
    <bought>0</bought>
   </display> 
  </data>
 </url>
</urlset>

现在需求是要根据数据库有几条商品信息 相应的API XML文件出现几个URL节点！ 采用类序列化成XML文件然后读取相应生成的XML文件就可以展示多个商品XML的信息 实现代码如下：

首先定义好XML 各个节点的数据及父子节点的关系类：

#region 定义数据实体类xml数据结构
public class urlset
{
  public List<url> urlList
  {
   get;
   set;
  }
}
public class url
{
  public string loc
  {
   get;
   set;
  }
  public List<data> dataList
  {
   get;
   set;
  }
}
public class data
{
  public List<display> displayList
  {
   get;
   set;
  }
}
public class display
{
  public string website
  {
   get;
   set;
  }
  public string siteurl
  {
   get;
   set;
  }
  public string city
  {
   get;
   set;
  }
  public string webSitetitle
  {
   get;
   set;
  }
  public string image
  {
   get;
   set;
  }
  public string startTime
  {
   get;
   set;
  }
  public string endTime
  {
   get;
   set;
  }
  public double value
  {
   get;
   set;
  }
  public double price
  {
   get;
   set;
  }
  public double rebate
  {
   get;
   set;
  }
  public int bought
  {
   get;
   set;
  }
}
#endregion

第二步：#region 定义获取网站信息实体类

public class WebSiteInfo
{
  /// <summary>
  /// 商品标题
  /// </summary>
  public string title { get; set; }
  /// <summary>
  /// 商品发布时间
  /// </summary>
  public DateTime createtime { get; set; }
  /// <summary>
  /// 商品图片
  /// </summary>
  public string productimg { get; set; }
  /// <summary>
  /// 市场价
  /// </summary>
  public decimal market_price { get; set; }
  /// <summary>
  /// 团购价
  /// </summary>
  public decimal team_price { get; set; }
  /// <summary>
  /// 折扣价
  /// </summary>
  public decimal zhekou_price { get; set; }
  /// <summary>
  /// 城市名称 
  /// </summary>
  public string cityName { get; set; }
  /// <summary>
  /// 商品开始时间
  /// </summary>
  public DateTime begin_time { get; set; }
  /// <summary>
  /// 结束时间
  /// </summary>
  public DateTime end_time { get; set; }
  /// <summary>
  /// 商家名称
  /// </summary>
  public string merchants_id { get; set; }
  /// <summary>
  /// 本单详情
  /// </summary>
  public string description { get; set; }
  /// <summary>
  /// 最低购买人数
  /// </summary>
  public int lowBuNo { get; set; }
  /// <summary>
  /// 商家地址
  /// </summary>
  public string Address { get; set; }
  /// <summary>
  /// 商家电话
  /// </summary>
  public string Telphone { get; set; }
  /// <summary>
  /// 城市区号
  /// </summary>
  public string cCode { get; set; }
  /// <summary>
  /// 文件夹名称
  /// </summary>
  public string folderName { get; set; }
  /// <summary>
  /// 团购状态 
  /// </summary>
  public string StatusMessage { get; set; }
  /// <summary>
  /// 现在购买人数
  /// </summary>
  public int nownumber { get; set; }
  /// <summary>
  /// 商品编号
  /// </summary>
  public int productID { get; set; }
}
#endregion

第三步：获取数据库商品信息记录并添加到对象的集合中（Arraylist）：

#region 获取xml实体类信息
/// <summary>
/// 获取xml实体类信息
/// </summary>
/// <returns></returns>
public static ArrayList GetWebModelInfo()
{
  ArrayList list = new ArrayList();
  string strSQL = "select a.id, a.merchantsID,a.cCode,a.prodCode,a.statue,a.now_number, a.title,a.createtime,a.productimg,a.market_price,a.team_price,a.zhekou_price,a.cityName,a.begin_time,a.end_time,a.description,a.lowBuyNo,b.Address,b.Tel from tg_product as a left join tg_merchants as b on a.merchantsID=b.merchants_id where a.ispublic=1 and statue>-1 and getdate()<dateadd(day,1,a.end_time) order by a.createtime desc";
  DataSet ds = FrameWork.Data.SqlHelper.ReturnDataSet(CommandType.Text, strSQL, null);
  if (ds.Tables[0].Rows.Count > 0)
  {
   foreach (DataRow dr in ds.Tables[0].Rows)
   {
    WebSiteInfo webModel = new WebSiteInfo();
    //城市名称
    webModel.cityName = dr["cityName"].ToString();
    //商品标题
    webModel.title = dr["title"].ToString();
    //商品创建时间
    webModel.createtime = Convert.ToDateTime(dr["createtime"].ToString());
    //商家名称
    webModel.merchants_id = dr["merchantsID"].ToString();
    //商品图片
    webModel.productimg = dr["productimg"].ToString();
    //市场价
    webModel.market_price = Convert.ToDecimal(dr["market_price"].ToString());
    //团购价
    webModel.team_price = Convert.ToDecimal(dr["team_price"].ToString());
    //折扣价
    webModel.zhekou_price = Convert.ToDecimal(dr["zhekou_price"].ToString());
    //开始时间
    webModel.begin_time = Convert.ToDateTime(dr["begin_time"].ToString());
    //结束时间
    webModel.end_time = Convert.ToDateTime(dr["end_time"].ToString());
    //商品说明
    webModel.description = dr["description"].ToString();
    //最低购买数量
    webModel.lowBuNo = Convert.ToInt32(dr["lowBuyNo"].ToString());
    //商家电话
    webModel.Telphone = dr["Tel"].ToString();
    //商家地址
    webModel.Address = dr["Address"].ToString();
    //城市编号
    webModel.cCode = dr["cCode"].ToString();
    //图片文件夹名称
    webModel.folderName = dr["prodCode"].ToString();
    //现在购买人数
    webModel.nownumber = Convert.ToInt32(dr["now_number"].ToString());
    //商品编号
    webModel.productID = Convert.ToInt32(dr["id"].ToString());
    int status = Convert.ToInt32(dr["statue"].ToString());
    switch (status)
    {
     case 0:
      webModel.StatusMessage = "结束";
      break;
     case 1:
      webModel.StatusMessage = "成功";
      break;
    }
    list.Add(webModel);
   }
  }
   return list;
}
#endregion

最后一步将数据库读取来的信息赋值到XML 数据类型中 并序列化成XML文件保存成XML格式的文件读取文件展现到界面：

#region 页面加载 根据数据库商品记录数生成xml文件信息
/// <summary>
/// 页面加载 根据数据库商品记录数生成xml文件信息
/// </summary>
List<url> urlList = null;
urlset urlsetList = new urlset();
protected void Page_Load(object sender, EventArgs e)
{
  if (!Page.IsPostBack)
  {
    ArrayList listinfo=GetWebModelInfo();
    urlList = new List<url>();
   for (int i = 0; i < listinfo.Count; i++)
   {
    WebSiteInfo webInfo = listinfo[i] as WebSiteInfo;
    List<display> displayList = new List<display>();
    display display = new display();
    display.website = "爱购114";
    display.siteurl = "http://www.xxxxx.com/";
    //城市名称
    display.city = webInfo.cityName;
    //商品标题
    display.webSitetitle = webInfo.title;
    //商品图片
    display.image = "http://211.155.235.30/tuangou/" + webInfo.folderName + "/" + webInfo.productimg;
    //商品开始时间
    display.startTime = webInfo.begin_time.ToShortDateString();
    //商品结束时间
    display.endTime = webInfo.end_time.ToShortDateString();
    //市场价
    display.value = Convert.ToDouble(webInfo.market_price);
    //团购价
    display.price = Convert.ToDouble(webInfo.team_price);
    //折扣价
    display.rebate = Convert.ToDouble(webInfo.zhekou_price);
    //现在购买的人数
    display.bought = webInfo.nownumber;
    displayList.Add(display);
    List<data> dataList = new List<data>();
    data data = new data();
    data.displayList = displayList;
    dataList.Add(data);
    url url = new url();
    url.loc = String.Format("http://www.xxxxx.com/todaydetials.aspx?id={0}", webInfo.productID.ToString());
    url.dataList = dataList;
    urlList.Add(url);
    urlsetList.urlList = urlList;
   }
   try
   {
    XmlSerializerNamespaces xmlns = new XmlSerializerNamespaces();
    xmlns.Add(String.Empty, String.Empty);
    //构造字符串
    StringBuilder sb = new StringBuilder();
    //将字符串写入到stringWriter对象中
    StringWriter sw = new StringWriter(sb);
    //xml序列化对象 typeof(类名)
    XmlSerializer ser = new XmlSerializer(typeof(urlset));
    //把Stream对象和urlset一起传入，序列化出一个字符串sb
    ser.Serialize(sw, urlsetList, xmlns);
    sw.Close();
    string FILE_NAME = HttpContext.Current.Server.MapPath("API/54tuan.xml");
    FileInfo fi = new FileInfo(FILE_NAME);
    //如果文件己经存在则删除该文件 
    if (fi.Exists)
    {
     if (fi.Attributes.ToString().IndexOf("ReadOnly") >= 0) {
      fi.Attributes = FileAttributes.Normal;
     }
     File.Delete(fi.Name);
    }
    //创建文件 并写入字符串
    using (StreamWriter sWrite = File.CreateText(FILE_NAME))
    {
     sWrite.Write(sb.ToString().Replace("encoding=/"utf-16/"", "encoding=/"utf-8/"").Replace("<urlList>", "").Replace("</urlList>", "").Replace("<dataList>", "").Replace("</dataList>", "").Replace("<displayList>", "").Replace("<displayList>", "").Replace("</displayList>", ""));
     sWrite.Close();
    }
    //输出序列化后xml文件
    Response.ClearContent();
    Response.ClearHeaders();
    Response.ContentType = "application/xml";
    Response.WriteFile(HttpContext.Current.Server.MapPath("API/54tuan.xml"));
    Response.Flush();
    Response.Close();
   }
   catch (Exception ex)
   {
    Response.Write(ex.Message);
   }
   finally
   {
   }
   }
}
#endregion

希望本文所述对大家asp.net程序设计有所帮助。