880 lines
23 KiB
C#
880 lines
23 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Xml;
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using CYQ.Data.Table;
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using CYQ.Data.Tool;
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namespace CYQ.Data.Xml
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{
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//public class RssDemo
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//{
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// public string GetRss()
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// {
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// Rss2 rss = new Rss2();
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// rss.channel.Title = "秋色园";
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// rss.channel.Link = "http://www.cyqdata.com";
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// rss.channel.Description = "秋色园-QBlog-Power by Blog.CYQ";
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// for (int i = 0; i < 10; i++)
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// {
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// RssItem item = new RssItem();
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// item.Title = string.Format("第{0}项", i);
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// item.Link = "http://www.cyqdata.com";
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// item.Description = "很长很长的内容";
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// rss.channel.Items.Add(item);
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// }
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// return rss.OutXml;
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// }
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//}
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//public class Rss2
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//{
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// XmlDocument rssDoc;
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// public RssChannel channel;
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// public Rss2()
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// {
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// rssDoc = new XmlDocument();
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// rssDoc.LoadXml("<?xml version=\"1.0\" encoding=\"utf-8\"?><rss version=\"2.0\"><channel></channel></rss>");
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// channel = new RssChannel();
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// }
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// private void BuildRss()
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// {
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// XmlNode cNode = rssDoc.DocumentElement.ChildNodes[0];//取得channel元素
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// ForeachCreateChild(cNode, channel);//Channel处理
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// if (channel.RssImage != null)
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// {
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// ForeachCreateChild(Create("image", null, cNode), channel.RssImage);//Channel-Image处理
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// }
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// if (channel.Items.Count > 0)
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// {
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// foreach (RssItem item in channel.Items)
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// {
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// ForeachCreateChild(Create("item", null, cNode), item);//Channel-Items处理
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// }
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// }
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// }
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// private void ForeachCreateChild(XmlNode parent, object obj)
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// {
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// object propValue = null;
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// PropertyInfo[] pis = obj.GetType().GetProperties();
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// for (int i = 0; i < pis.Length; i++)
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// {
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// if (pis[i].Name == "Items" || pis[i].Name == "Image")
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// {
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// continue;
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// }
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// propValue = pis[i].GetValue(obj, null);
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// if (propValue == null || propValue == DBNull.Value)
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// {
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// continue;
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// }
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// if (pis[i].Name == "Description")
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// {
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// propValue = "<![CDATA[" + propValue.ToString() + "]]>";
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// }
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// Create(pis[i].Name.Substring(0, 1).ToLower() + pis[i].Name.Substring(1), propValue.ToString(), parent);
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// }
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// }
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// private XmlNode Create(string name, string value,XmlNode parent)
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// {
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// XmlElement xNode = rssDoc.CreateElement(name);
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// if (string.IsNullOrEmpty(value))
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// {
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// xNode.InnerXml = value;
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// }
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// parent.AppendChild(xNode as XmlNode);
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// return xNode as XmlNode;
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// }
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// public string OutXml
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// {
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// get
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// {
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// BuildRss();
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// return rssDoc.OuterXml;
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// }
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// }
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//}
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/// <summary>
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/// Rss操作类
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/// </summary>
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public class Rss
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{
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internal class RssItemMap
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{
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internal string RssItemName;
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internal object[] TableColumnNames;
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internal string FormatText;
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}
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MDataTable _MTable = null;
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List<RssItemMap> mapList = new List<RssItemMap>();//与MDataTable映射
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private RssChannel channel;
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/// <summary>
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/// RSS 频道（默认）
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/// </summary>
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public RssChannel Channel
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{
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get
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{
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return channel;
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}
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}
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RssImage img;
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XHtmlAction rssDoc;
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public Rss()
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{
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rssDoc = new XHtmlAction(false);
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//rssDoc.ReadOnly = true;
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rssDoc.LoadXml("<?xml version=\"1.0\" encoding=\"utf-8\"?><rss version=\"2.0\"><channel></channel></rss>");
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channel = new RssChannel();
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}
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/// <summary>
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/// 设置网站标题
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/// </summary>
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/// <param name="title">网站名称</param>
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/// <param name="link">网址</param>
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/// <param name="description">网站描述</param>
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public void Set(string title, string link, string description)
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{
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channel.Title = title;
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channel.Link = link;
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channel.Description = description;
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}
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/// <summary>
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/// 设置图片（网站Logo）
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/// </summary>
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/// <param name="url">Logo网址</param>
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/// <param name="title">Logo标题</param>
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/// <param name="link">Logo点击时跳转链接</param>
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public void SetImg(string url, string title, string link)
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{
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if (img == null)
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{
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img = new RssImage();
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img.Url = url;
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img.Title = title;
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img.Link = link;
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}
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}
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/// <summary>
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/// 添加RSS项（文章）
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/// </summary>
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/// <param name="title">标题</param>
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/// <param name="link">链接</param>
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/// <param name="author">作者</param>
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/// <param name="pubDate">发布日期</param>
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/// <param name="description">内容或摘要</param>
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public void AddItem(string title, string link, string author, string pubDate, string description)
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{
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RssItem item = new RssItem();
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item.Title = title;
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item.Link = link;
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item.Author = author;
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item.PubDate = pubDate;
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item.Description = description;
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channel.Items.Add(item);
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}
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public delegate string SetForeachEventHandler(string text, MDictionary<string, string> values, int rowIndex);
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/// <summary>
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///LoadData（MDataTable）进行映射后，在格式化每一行数据时触发事件
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/// </summary>
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public event SetForeachEventHandler OnForeach;
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private void BuildRss()
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{
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object propValue = null;
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XmlNode cNode = rssDoc.XmlDoc.DocumentElement.ChildNodes[0];
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CreateNode(cNode, channel);//Channel处理
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XmlNode iNode = null;
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if (img != null)
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{
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iNode = rssDoc.CreateNode("image", string.Empty);
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cNode.AppendChild(iNode);
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CreateNode(iNode, img);//Channel-Image处理
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}
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if (channel.Items.Count > 0)
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{
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foreach (RssItem item in channel.Items)
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{
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iNode = rssDoc.CreateNode("item", string.Empty);
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cNode.AppendChild(iNode);
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CreateNode(iNode, item);//Channel-Items处理
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}
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}
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else if (_MTable != null && mapList.Count > 0)
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{
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foreach (MDataRow row in _MTable.Rows)
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{
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iNode = rssDoc.CreateNode("item", string.Empty);
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cNode.AppendChild(iNode);
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//foreach (RssItemMap item in mapList)
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RssItemMap item = null;
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for (int k = 0; k < mapList.Count; k++)
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{
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item = mapList[k];
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if (item.TableColumnNames.Length > 0)
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{
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MDictionary<string, string> dic = new MDictionary<string, string>(item.TableColumnNames.Length, StringComparer.OrdinalIgnoreCase);
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object[] values = new object[item.TableColumnNames.Length];
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for (int i = 0; i < item.TableColumnNames.Length; i++)
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{
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string columnName = item.TableColumnNames[i].ToString();
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values[i] = row[columnName].Value;
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dic.Set(columnName, Convert.ToString(values[i]));
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}
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if (OnForeach != null)
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{
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item.FormatText = OnForeach(item.FormatText, dic, k);
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}
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if (string.IsNullOrEmpty(item.FormatText))
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{
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propValue = values[0];
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}
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else
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{
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propValue = string.Format(item.FormatText, values);
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}
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}
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//else if (item.TableColumnNames.Length > 0)
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//{
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// propValue = row[item.TableColumnNames[0].ToString()].Value;
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// if (!string.IsNullOrEmpty(item.FormatText))
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// {
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// propValue = string.Format(item.FormatText, propValue);
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// }
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//}
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else
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{
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propValue = item.FormatText;
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}
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if (propValue == null || propValue == DBNull.Value)
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{
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continue;
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}
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if (item.RssItemName == "Description")
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{
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propValue = rssDoc.SetCDATA(propValue.ToString());
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}
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rssDoc.CreateNodeTo(iNode, item.RssItemName.Substring(0, 1).ToLower() + item.RssItemName.Substring(1), propValue.ToString());
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}
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}
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}
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}
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private void CreateNode(XmlNode parent, object obj)
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{
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object propValue = null;
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List<PropertyInfo> pis = Tool.StaticTool.GetPropertyInfo(obj.GetType());
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for (int i = 0; i < pis.Count; i++)
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{
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if (pis[i].Name == "Items")
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{
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continue;
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}
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propValue = pis[i].GetValue(obj, null);
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if (propValue == null || propValue == DBNull.Value)
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{
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continue;
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}
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if (pis[i].Name == "Description")
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{
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propValue = rssDoc.SetCDATA(propValue.ToString());
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}
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parent.AppendChild(rssDoc.CreateNode(pis[i].Name.Substring(0, 1).ToLower() + pis[i].Name.Substring(1), propValue.ToString()));
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}
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}
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/// <summary>
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/// 获取输出的RSS内容。
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/// </summary>
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public string OutXml
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{
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get
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{
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BuildRss();
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return rssDoc.ClearMMS(rssDoc.XmlDoc.OuterXml);
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}
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}
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#region 与MDataTable交互
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/// <summary>
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/// 加载MDataTable,之后可调用SetMap进行字段映射
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/// </summary>
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/// <param name="table"></param>
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public void LoadData(MDataTable table)
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{
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_MTable = table;
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}
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/// <summary>
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/// 设置与MDataTable间的字段映射
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/// </summary>
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/// <param name="itemName">Rss名称</param>
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/// <param name="formatText">格式化，如“{0}.Name”，若无需要格式化，直接赋Null值</param>
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/// <param name="tableColumnNames">同DataTable的字段名称</param>
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public void SetMap(RssItemName itemName, string formatText, params object[] tableColumnNames)
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{
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RssItemMap map = new RssItemMap();
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map.RssItemName = itemName.ToString();
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map.FormatText = formatText;
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map.TableColumnNames = tableColumnNames;
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mapList.Add(map);
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}
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#endregion
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}
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/// <summary>
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/// RSS 频道
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/// </summary>
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public class RssChannel
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{
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#region 必选
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private string _Title;
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/// <summary>
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/// 定义频道的标题
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/// </summary>
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public string Title
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{
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get
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{
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return _Title;
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}
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set
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{
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_Title = value;
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}
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}
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private string _Link;
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/// <summary>
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/// 定义指向频道的超链接
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/// </summary>
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public string Link
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{
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get
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{
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return _Link;
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}
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set
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{
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_Link = value;
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}
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}
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private string _Description;
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/// <summary>
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/// 描述频道
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/// </summary>
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public string Description
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{
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get
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{
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return _Description;
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}
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set
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{
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_Description = value;
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}
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}
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#endregion
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#region 可选
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private string _Category;
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/// <summary>
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/// 为 feed 定义所属的一个或多个种类
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/// </summary>
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public string Category
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{
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get
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{
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return _Category;
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}
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set
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{
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_Category = value;
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}
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}
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private string _Cloud;
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/// <summary>
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/// 注册进程，以获得 feed 更新的立即通知
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/// </summary>
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public string Cloud
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{
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get
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{
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return _Cloud;
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}
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set
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{
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_Cloud = value;
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}
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}
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private string _Copyright;
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/// <summary>
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/// 告知版权资料
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/// </summary>
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public string Copyright
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{
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get
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{
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return _Copyright;
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}
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set
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{
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_Copyright = value;
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}
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}
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private string _Docs;
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/// <summary>
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/// 规定指向当前 RSS 文件所用格式说明的 URL
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/// </summary>
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public string Docs
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{
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get
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{
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return _Docs;
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}
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set
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{
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_Docs = value;
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}
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}
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private string _Generator;
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/// <summary>
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/// 规定指向当前 RSS 文件所用格式说明的 URL
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/// </summary>
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public string Generator
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{
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get
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{
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return _Generator;
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}
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set
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{
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_Generator = value;
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}
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}
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private string _Language = "zh-cn";
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/// <summary>
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/// 规定编写 feed 所用的语言
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/// </summary>
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public string Language
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{
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get
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{
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return _Language;
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}
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set
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{
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_Language = value;
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}
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}
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private string _LastBuildDate;
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/// <summary>
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/// 定义 feed 内容的最后修改日期
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/// </summary>
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public string LastBuildDate
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{
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get
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{
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return _LastBuildDate;
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}
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set
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{
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_LastBuildDate = value;
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}
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}
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private string _ManagingEditor;
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/// <summary>
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/// 定义 feed 内容编辑的电子邮件地址
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/// </summary>
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public string ManagingEditor
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{
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get
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{
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return _ManagingEditor;
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}
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set
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{
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_ManagingEditor = value;
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}
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}
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private string _PubDate;
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/// <summary>
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/// 为 feed 的内容定义最后发布日期
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/// </summary>
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public string PubDate
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{
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get
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{
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return _PubDate;
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}
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set
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{
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_PubDate = value;
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}
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}
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private string _Rating;
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/// <summary>
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/// feed 的 PICS 级别
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/// </summary>
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public string Rating
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{
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get
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{
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return _Rating;
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}
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set
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{
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_Rating = value;
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}
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}
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private string _SkipDays;
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/// <summary>
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/// 规定忽略 feed 更新的天
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/// </summary>
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public string SkipDays
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{
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get
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{
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return _SkipDays;
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}
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set
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{
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_SkipDays = value;
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}
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}
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private string _SkipHours;
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/// <summary>
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/// 规定忽略 feed 更新的小时
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/// </summary>
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public string SkipHours
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{
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get
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{
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return _SkipHours;
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}
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set
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{
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_SkipHours = value;
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}
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}
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private string _TextInput;
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/// <summary>
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/// 规定应当与 feed 一同显示的文本输入域
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/// </summary>
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public string TextInput
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{
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get
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{
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return _TextInput;
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}
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set
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{
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_TextInput = value;
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}
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}
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private string _Ttl;
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/// <summary>
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/// 指定从 feed 源更新此 feed 之前，feed 可被缓存的分钟数
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/// </summary>
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public string Ttl
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{
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get
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{
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return _Ttl;
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}
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||
set
|
||
{
|
||
_Ttl = value;
|
||
}
|
||
}
|
||
private string _WebMaster;
|
||
/// <summary>
|
||
/// 定义此 feed 的 web 管理员的电子邮件地址
|
||
/// </summary>
|
||
public string WebMaster
|
||
{
|
||
get
|
||
{
|
||
return _WebMaster;
|
||
}
|
||
set
|
||
{
|
||
_WebMaster = value;
|
||
}
|
||
}
|
||
private string _RssImage;
|
||
/// <summary>
|
||
/// 定义此 feed 的 图片Logo
|
||
/// </summary>
|
||
public string RssImage
|
||
{
|
||
get
|
||
{
|
||
return _RssImage;
|
||
}
|
||
set
|
||
{
|
||
_RssImage = value;
|
||
}
|
||
}
|
||
#endregion
|
||
private List<RssItem> _Items = new List<RssItem>();
|
||
/// <summary>
|
||
/// 频道项
|
||
/// </summary>
|
||
public List<RssItem> Items
|
||
{
|
||
get
|
||
{
|
||
return _Items;
|
||
}
|
||
set
|
||
{
|
||
_Items = value;
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 图片项
|
||
/// </summary>
|
||
public class RssImage
|
||
{
|
||
#region 必选
|
||
private string _Url;
|
||
/// <summary>
|
||
/// 图片地址
|
||
/// </summary>
|
||
public string Url
|
||
{
|
||
get
|
||
{
|
||
return _Url;
|
||
}
|
||
set
|
||
{
|
||
_Url = value;
|
||
}
|
||
}
|
||
private string _Title;
|
||
/// <summary>
|
||
/// 图片标题
|
||
/// </summary>
|
||
public string Title
|
||
{
|
||
get
|
||
{
|
||
return _Title;
|
||
}
|
||
set
|
||
{
|
||
_Title = value;
|
||
}
|
||
}
|
||
private string _Link;
|
||
/// <summary>
|
||
/// 提供图片的站点链接
|
||
/// </summary>
|
||
public string Link
|
||
{
|
||
get
|
||
{
|
||
return _Link;
|
||
}
|
||
set
|
||
{
|
||
_Link = value;
|
||
}
|
||
}
|
||
private string _Description;
|
||
/// <summary>
|
||
/// 描述频道
|
||
/// </summary>
|
||
public string Description
|
||
{
|
||
get
|
||
{
|
||
return _Description;
|
||
}
|
||
set
|
||
{
|
||
_Description = value;
|
||
}
|
||
}
|
||
#endregion
|
||
}
|
||
/// <summary>
|
||
/// RSS项
|
||
/// </summary>
|
||
public class RssItem
|
||
{
|
||
#region 必选
|
||
private string _Title;
|
||
/// <summary>
|
||
/// 定义频道的标题
|
||
/// </summary>
|
||
public string Title
|
||
{
|
||
get
|
||
{
|
||
return _Title;
|
||
}
|
||
set
|
||
{
|
||
_Title = value;
|
||
}
|
||
}
|
||
private string _Link;
|
||
/// <summary>
|
||
/// 定义指向频道的超链接
|
||
/// </summary>
|
||
public string Link
|
||
{
|
||
get
|
||
{
|
||
return _Link;
|
||
}
|
||
set
|
||
{
|
||
_Link = value;
|
||
}
|
||
}
|
||
private string _Description;
|
||
/// <summary>
|
||
/// 描述频道
|
||
/// </summary>
|
||
public string Description
|
||
{
|
||
get
|
||
{
|
||
return _Description;
|
||
}
|
||
set
|
||
{
|
||
_Description = value;
|
||
}
|
||
}
|
||
#endregion
|
||
|
||
#region 可选
|
||
private string _Category;
|
||
/// <summary>
|
||
/// 为 feed 定义所属的一个或多个种类
|
||
/// </summary>
|
||
public string Category
|
||
{
|
||
get
|
||
{
|
||
return _Category;
|
||
}
|
||
set
|
||
{
|
||
_Category = value;
|
||
}
|
||
}
|
||
private string _Author;
|
||
/// <summary>
|
||
/// 规定项目作者的电子邮件地址
|
||
/// </summary>
|
||
public string Author
|
||
{
|
||
get
|
||
{
|
||
return _Author;
|
||
}
|
||
set
|
||
{
|
||
_Author = value;
|
||
}
|
||
}
|
||
private string _Comments;
|
||
/// <summary>
|
||
/// 允许项目连接到有关此项目的注释（文件）
|
||
/// </summary>
|
||
public string Comments
|
||
{
|
||
get
|
||
{
|
||
return _Comments;
|
||
}
|
||
set
|
||
{
|
||
_Comments = value;
|
||
}
|
||
}
|
||
private string _Enclosure;
|
||
/// <summary>
|
||
/// 允许将一个媒体文件导入一个项中
|
||
/// </summary>
|
||
public string Enclosure
|
||
{
|
||
get
|
||
{
|
||
return _Enclosure;
|
||
}
|
||
set
|
||
{
|
||
_Enclosure = value;
|
||
}
|
||
}
|
||
private string _Guid;
|
||
/// <summary>
|
||
/// 为 项目定义一个唯一的标识符
|
||
/// </summary>
|
||
public string Guid
|
||
{
|
||
get
|
||
{
|
||
return _Guid;
|
||
}
|
||
set
|
||
{
|
||
_Guid = value;
|
||
}
|
||
}
|
||
private string _PubDate;
|
||
/// <summary>
|
||
///定义此项目的最后发布日期
|
||
/// </summary>
|
||
public string PubDate
|
||
{
|
||
get
|
||
{
|
||
return _PubDate;
|
||
}
|
||
set
|
||
{
|
||
_PubDate = value;
|
||
}
|
||
}
|
||
private string _Source;
|
||
/// <summary>
|
||
/// 为此项目指定一个第三方来源
|
||
/// </summary>
|
||
public string Source
|
||
{
|
||
get
|
||
{
|
||
return _Source;
|
||
}
|
||
set
|
||
{
|
||
_Source = value;
|
||
}
|
||
}
|
||
#endregion
|
||
}
|
||
/// <summary>
|
||
/// RSS 项枚举
|
||
/// </summary>
|
||
public enum RssItemName
|
||
{
|
||
Title,
|
||
Link,
|
||
Description,
|
||
Category,
|
||
Author,
|
||
Comments,
|
||
Enclosure,
|
||
Guid,
|
||
PubDate,
|
||
Source
|
||
}
|
||
}
|