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。