最近遇到要读取QQ相册的问题，所以自己诼磨了下，把读取相册的思路和代码写下来。
Code
<%@ Page language="c#" CodeFile="GetPhoto.aspx.cs" AutoEventWireup="false" Inherits="GetPhoto" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>GetPhoto</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<P>QQ号码：<asp:textbox id="txtQQ" runat="server"></asp:textbox>
<asp:button id="Button1" runat="server" Text="读取相册"></asp:button></P>
<asp:Label ID="msg" Runat="server"></asp:Label>
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="全选" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="全不选" /><P>
<asp:DataList id="albumList" Runat="server" RepeatColumns="8" EnableViewState="False">
<ItemTemplate>
<div>
<div><%# DataBinder.Eval(Container.DataItem,"PicLink")%></div>
<div><%# DataBinder.Eval(Container.DataItem,"PicTitle")%></div>
</div>
</ItemTemplate>
</asp:DataList>
<asp:DataList id="picList" Runat="server" RepeatColumns="8" EnableViewState="False" DataKeyField="PicUrl">
<ItemTemplate>
<div>
<div><%# DataBinder.Eval(Container.DataItem,"PicLink")%></div>
<div>
<asp:CheckBox ID="confirm" Runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"PicTitle")%>' /></div>
</div>
</ItemTemplate>
<FooterTemplate>
<div>
<asp:Button ID="bntOk" Runat="server" CommandName="Update" Text="开始导入"></asp:Button></div>
</FooterTemplate>
</asp:DataList>
</P>
</form>
</body>
</HTML>
Code
using System;
using System.Collections;
using System.Data;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Xml;
using System.Drawing.Imaging;
/**//// <summary>
/// GetPhoto 的摘要说明。
/// </summary>
public partial class GetPhoto : System.Web.UI.Page
{
//protected System.Web.UI.WebControls.TextBox txtQQ;
//protected System.Web.UI.WebControls.Button Button1;
//protected System.Web.UI.WebControls.DataList picList; //{0}qq号
//protected System.Web.UI.WebControls.Label msg;
//protected System.Web.UI.WebControls.DataList albumList;
private const string QQPHOTO = "http://p{0}.photo.qq.com/{1}/16"; //{0} = {1} % 13 + 1 {1}为qq号
//取相册的另一个有用路径，在第一个可用的情况下用。
private const string QQPHOTO_B = "http://photo.qq.com/cgi-bin/common/cgi_list_album?uin={0}";
private const string ALBUMURL = "http://sz.photo.store.qq.com/http_staload.cgi?{0}/{1}"; //{0}qq号 {1}album号
private string UserID = "maxwell"; //用户名
private void Page_Load(object sender, System.EventArgs e)
{
//点击“开始导入”时 把打勾的图片保存到本机上。
picList.UpdateCommand += new DataListCommandEventHandler(picList_UpdateCommand);
//取url参数中的相册图片 即取qq相册 QQ有防盗链
if(Request.QueryString["pre"] != null)
{
string url = Request.QueryString["pre"];
WebRequest preR = WebRequest.Create(url);
Stream stream = preR.GetResponse().GetResponseStream();
//QQ相册只能上传jpg|gif|png的图片
//把这些图片保存为jpeg格式和ContentType设置为image/jpeg都能显示。
Response.ClearContent();
Response.ContentType = "image/jpeg";
System.Drawing.Bitmap img = new System.Drawing.Bitmap(stream);
img.Save(Response.OutputStream,ImageFormat.Jpeg);
img.Dispose();
stream.Close();
Response.End();
}
//根据相册ID取该相册中的图片。
if(Request.QueryString["id"] != null && Request.QueryString["qq"] != null)
{
string id = Request.QueryString["id"];
string qq = Request.QueryString["qq"];
string albumUrl = string.Format(ALBUMURL,qq,id);
XmlDocument xml = GetXmlData(albumUrl);
if(xml == null)
{
msg.Text = "暂时不能读取数据。请稍后再试。";
return;
}
XmlNodeList list = xml.GetElementsByTagName("pic");
PicAlbum[] pics = new PicAlbum[list.Count];
for(int i=0; i<list.Count; i++)
{
string name = list[i].SelectSingleNode("name").InnerText;
string pre = list[i].SelectSingleNode("pre").InnerText;
string url = list[i].SelectSingleNode("url").InnerText;
string picLink = "<img src='" + Request.Url.AbsolutePath + "?pre=" + pre + "'/>";
pics[i] = new PicAlbum(url,picLink,name);
}
albumList.Visible = false;
picList.Visible = true;
picList.DataSource = pics;
picList.DataBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
//读取相册
private void Button1_Click(object sender, System.EventArgs e)
{
string qq = txtQQ.Text;
string photoUrl = string.Format(QQPHOTO,(int.Parse(qq)%13+1),qq);
//从QQ读取相册数据
XmlDocument xml = GetXmlData(photoUrl);
if(xml == null)
{
//判断静态XML是否取到，如果未取到，再尝试拉一次CGI(QQ的说法)
string photoBackupUrl = string.Format(QQPHOTO_B,qq);
xml = GetXmlData(photoBackupUrl);
if(xml == null)
{
msg.Text = "暂时不能读取数据。请稍后再试。";
return;
}
}
XmlNodeList list = xml.GetElementsByTagName("album");
ArrayList albums = new ArrayList();
for(int i=1; i<list.Count; i++)//从1开始，是因为xml文件的第一个album不是相册数据。
{
string priv = list[i].SelectSingleNode("priv").InnerText.Trim();
if(priv != "1")
continue;
string id = list[i].SelectSingleNode("id").InnerText;
string name = list[i].SelectSingleNode("name").InnerText;
string pre = list[i].SelectSingleNode("pre").InnerText;
string picLink = "<a href='"+ Request.Url.AbsolutePath + "?id=" + id +"&qq=" + qq + "'><img src='" + Request.Url.AbsolutePath + "?pre=" + pre + "'/></a>";
albums.Add(new PicAlbum(id,picLink,name));
}
picList.Visible = false;
albumList.Visible = true;
albumList.DataSource = albums;
albumList.DataBind();
}
/**//// <summary>
/// 根据地址得到一个xml文档
/// </summary>
/// <param name="url">地址</param>
/// <returns></returns>
private XmlDocument GetXmlData(string url)
{
HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(url);
//wreq.Timeout = 20;
HttpWebResponse wres = null;
XmlDocument xml = null;
try
{
wres = (HttpWebResponse)wreq.GetResponse();
xml = new XmlDocument();
xml.Load(wres.GetResponseStream());
}
finally
{
wres.Close();
}
return xml;
}
/**//// <summary>
/// 开始导入图片 只把打勾的图片导入。
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
private void picList_UpdateCommand(object source, DataListCommandEventArgs e)
{
DataList picList = source as DataList;
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
ArrayList urls = new ArrayList(); //用来保存要导入图片的地址。
for(int i=0; i<picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if(cb.Checked)
{
urls.Add(picList.DataKeys[i]);
}
}
//读取要保存图片的URL后，保存图片
SavePics(urls);
}
//全选
protected void Button3_Click(object sender, EventArgs e)
{
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
for (int i = 0; i < picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if (cb.Checked == false)
{
cb.Checked = true;
}
}
}
/**//// <summary>
/// 保存列表中的图片。
/// </summary>
/// <param name="urls">保存图片地址的列表</param>
private void SavePics(ArrayList urls)
{
DateTime date = DateTime.Now;
string path = Server.MapPath(".");
int i=1;
foreach(string url in urls)
{
string name = path + "\\" + UserID + date.ToString("yyyyMMdd") + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + (i++) + ".jpg";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
Stream stream = req.GetResponse().GetResponseStream();
System.Drawing.Bitmap img = new System.Drawing.Bitmap(stream);
img.Save(name,ImageFormat.Jpeg);
img.Dispose();
stream.Close();
}
msg.Text = "文件保存完成。";
}
//全不选
protected void Button2_Click(object sender, EventArgs e)
{
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
for (int i = 0; i < picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if (cb.Checked == true)
{
cb.Checked = false;
}
}
}
}
/**//// <summary>
/// 图片相册类
/// </summary>
public class PicAlbum
{
private string picUrl;
private string picLink;
private string picTitle;
public PicAlbum(string picurl,string piclink,string pictitle)
{
picUrl = picurl;
picLink = piclink;
picTitle = pictitle;
}
public string PicUrl
{
get{ return picUrl;}
}
public string PicLink
{
get{ return picLink;}
}
public string PicTitle
{
get{ return picTitle;}
}
}
很多网站到图片链接都做了盗链处理。意思是如果你想在不是他的网站上引用图片就不会正确显示图片，而是一张其它的版权说明之类的图片。实现防盗链的一般做好是通过判断Request的Headers中的Referer属性。该属性保存着客户端在访问该链接之前的地址。又如我访问http://www.domain.com/,该网站中有一张图片<img src='http://www.qq.com/logo.gif'> ，该图片请求的Referer属性就应该是http://www.domain.com/ 表示是从该地址转过来的。
要突破这种防盗链，你可以在发请求这前修改Referer属性，不过这有点难度。因为这个属性是只读的。另外一种做法是用程序的方式（在ASP.NET中即HttpWebRequest）来新建一个请求，些时Referer是空的，所以防盗链也就不起作用。
QQ相册取图片的方式隐藏得很好，是用Ajax方式读取的，js脚本文件也进行了压缩，所以很难看清它是怎么取图片的。看了很久之后才发现它读相册以及相册中图片的地址：
相册地址：http://p{0}.photo.qq.com/{1}/16 //{0} = {1} % 13 + 1 {1}为qq号
图片地址：http://sz.photo.store.qq.com/http_staload.cgi?{0}/{1} ; //{0}qq号 {1}相册号
这两个地址只是返回一个XML文件，文件中才标识着真正的图片地址。
程序的思路是先通过QQ号得到相册相关信息的xml文件，从文件中得到相册号和相册封面图片地址，用HttpWebRequest得到该封面图片并显示出来。当用户点击该图片时再根据相册号得到该相册下图片信息的xml文件，再次用HttpWebRequest的方式显示预览图片，供用户选择要导入的图片，最好根据图片的真正地址把图片保存在当前文件夹中。
把程序贴在下面，一个面页GetPhoto.aspx和后台代码GetPhoto.aspx.cs
GetPhoto.aspx
Code<%@ Page language="c#" CodeFile="GetPhoto.aspx.cs" AutoEventWireup="false" Inherits="GetPhoto" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>GetPhoto</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<P>QQ号码：<asp:textbox id="txtQQ" runat="server"></asp:textbox>
<asp:button id="Button1" runat="server" Text="读取相册"></asp:button></P>
<asp:Label ID="msg" Runat="server"></asp:Label>
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="全选" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="全不选" /><P>
<asp:DataList id="albumList" Runat="server" RepeatColumns="8" EnableViewState="False">
<ItemTemplate>
<div>
<div><%# DataBinder.Eval(Container.DataItem,"PicLink")%></div>
<div><%# DataBinder.Eval(Container.DataItem,"PicTitle")%></div>
</div>
</ItemTemplate>
</asp:DataList>
<asp:DataList id="picList" Runat="server" RepeatColumns="8" EnableViewState="False" DataKeyField="PicUrl">
<ItemTemplate>
<div>
<div><%# DataBinder.Eval(Container.DataItem,"PicLink")%></div>
<div>
<asp:CheckBox ID="confirm" Runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"PicTitle")%>' /></div>
</div>
</ItemTemplate>
<FooterTemplate>
<div>
<asp:Button ID="bntOk" Runat="server" CommandName="Update" Text="开始导入"></asp:Button></div>
</FooterTemplate>
</asp:DataList>
</P>
</form>
</body>
</HTML>
用了两个DataList 一个用来显示相册图片，一个用来显示相册中的图片。
后台代码GetPhoto.aspx.cs 稍微有点长
Codeusing System;
using System.Collections;
using System.Data;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Xml;
using System.Drawing.Imaging;
/**//// <summary>
/// GetPhoto 的摘要说明。
/// </summary>
public partial class GetPhoto : System.Web.UI.Page
{
//protected System.Web.UI.WebControls.TextBox txtQQ;
//protected System.Web.UI.WebControls.Button Button1;
//protected System.Web.UI.WebControls.DataList picList; //{0}qq号
//protected System.Web.UI.WebControls.Label msg;
//protected System.Web.UI.WebControls.DataList albumList;
private const string QQPHOTO = "http://p{0}.photo.qq.com/{1}/16"; //{0} = {1} % 13 + 1 {1}为qq号
//取相册的另一个有用路径，在第一个可用的情况下用。
private const string QQPHOTO_B = "http://photo.qq.com/cgi-bin/common/cgi_list_album?uin={0}";
private const string ALBUMURL = "http://sz.photo.store.qq.com/http_staload.cgi?{0}/{1}"; //{0}qq号 {1}album号
private string UserID = "maxwell"; //用户名
private void Page_Load(object sender, System.EventArgs e)
{
//点击“开始导入”时 把打勾的图片保存到本机上。
picList.UpdateCommand += new DataListCommandEventHandler(picList_UpdateCommand);
//取url参数中的相册图片 即取qq相册 QQ有防盗链
if(Request.QueryString["pre"] != null)
{
string url = Request.QueryString["pre"];
WebRequest preR = WebRequest.Create(url);
Stream stream = preR.GetResponse().GetResponseStream();
//QQ相册只能上传jpg|gif|png的图片
//把这些图片保存为jpeg格式和ContentType设置为image/jpeg都能显示。
Response.ClearContent();
Response.ContentType = "image/jpeg";
System.Drawing.Bitmap img = new System.Drawing.Bitmap(stream);
img.Save(Response.OutputStream,ImageFormat.Jpeg);
img.Dispose();
stream.Close();
Response.End();
}
//根据相册ID取该相册中的图片。
if(Request.QueryString["id"] != null && Request.QueryString["qq"] != null)
{
string id = Request.QueryString["id"];
string qq = Request.QueryString["qq"];
string albumUrl = string.Format(ALBUMURL,qq,id);
XmlDocument xml = GetXmlData(albumUrl);
if(xml == null)
{
msg.Text = "暂时不能读取数据。请稍后再试。";
return;
}
XmlNodeList list = xml.GetElementsByTagName("pic");
PicAlbum[] pics = new PicAlbum[list.Count];
for(int i=0; i<list.Count; i++)
{
string name = list[i].SelectSingleNode("name").InnerText;
string pre = list[i].SelectSingleNode("pre").InnerText;
string url = list[i].SelectSingleNode("url").InnerText;
string picLink = "<img src='" + Request.Url.AbsolutePath + "?pre=" + pre + "'/>";
pics[i] = new PicAlbum(url,picLink,name);
}
albumList.Visible = false;
picList.Visible = true;
picList.DataSource = pics;
picList.DataBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
//读取相册
private void Button1_Click(object sender, System.EventArgs e)
{
string qq = txtQQ.Text;
string photoUrl = string.Format(QQPHOTO,(int.Parse(qq)%13+1),qq);
//从QQ读取相册数据
XmlDocument xml = GetXmlData(photoUrl);
if(xml == null)
{
//判断静态XML是否取到，如果未取到，再尝试拉一次CGI(QQ的说法)
string photoBackupUrl = string.Format(QQPHOTO_B,qq);
xml = GetXmlData(photoBackupUrl);
if(xml == null)
{
msg.Text = "暂时不能读取数据。请稍后再试。";
return;
}
}
XmlNodeList list = xml.GetElementsByTagName("album");
ArrayList albums = new ArrayList();
for(int i=1; i<list.Count; i++)//从1开始，是因为xml文件的第一个album不是相册数据。
{
string priv = list[i].SelectSingleNode("priv").InnerText.Trim();
if(priv != "1")
continue;
string id = list[i].SelectSingleNode("id").InnerText;
string name = list[i].SelectSingleNode("name").InnerText;
string pre = list[i].SelectSingleNode("pre").InnerText;
string picLink = "<a href='"+ Request.Url.AbsolutePath + "?id=" + id +"&qq=" + qq + "'><img src='" + Request.Url.AbsolutePath + "?pre=" + pre + "'/></a>";
albums.Add(new PicAlbum(id,picLink,name));
}
picList.Visible = false;
albumList.Visible = true;
albumList.DataSource = albums;
albumList.DataBind();
}
/**//// <summary>
/// 根据地址得到一个xml文档
/// </summary>
/// <param name="url">地址</param>
/// <returns></returns>
private XmlDocument GetXmlData(string url)
{
HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(url);
//wreq.Timeout = 20;
HttpWebResponse wres = null;
XmlDocument xml = null;
try
{
wres = (HttpWebResponse)wreq.GetResponse();
xml = new XmlDocument();
xml.Load(wres.GetResponseStream());
}
finally
{
wres.Close();
}
return xml;
}
/**//// <summary>
/// 开始导入图片 只把打勾的图片导入。
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
private void picList_UpdateCommand(object source, DataListCommandEventArgs e)
{
DataList picList = source as DataList;
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
ArrayList urls = new ArrayList(); //用来保存要导入图片的地址。
for(int i=0; i<picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if(cb.Checked)
{
urls.Add(picList.DataKeys[i]);
}
}
//读取要保存图片的URL后，保存图片
SavePics(urls);
}
//全选
protected void Button3_Click(object sender, EventArgs e)
{
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
for (int i = 0; i < picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if (cb.Checked == false)
{
cb.Checked = true;
}
}
}
/**//// <summary>
/// 保存列表中的图片。
/// </summary>
/// <param name="urls">保存图片地址的列表</param>
private void SavePics(ArrayList urls)
{
DateTime date = DateTime.Now;
string path = Server.MapPath(".");
int i=1;
foreach(string url in urls)
{
string name = path + "\\" + UserID + date.ToString("yyyyMMdd") + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + (i++) + ".jpg";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
Stream stream = req.GetResponse().GetResponseStream();
System.Drawing.Bitmap img = new System.Drawing.Bitmap(stream);
img.Save(name,ImageFormat.Jpeg);
img.Dispose();
stream.Close();
}
msg.Text = "文件保存完成。";
}
//全不选
protected void Button2_Click(object sender, EventArgs e)
{
PicAlbum[] pics = (PicAlbum[])picList.DataSource;
for (int i = 0; i < picList.Items.Count; i++)
{
CheckBox cb = (CheckBox)picList.Items[i].FindControl("confirm");
if (cb.Checked == true)
{
cb.Checked = false;
}
}
}
}
/**//// <summary>
/// 图片相册类
/// </summary>
public class PicAlbum
{
private string picUrl;
private string picLink;
private string picTitle;
public PicAlbum(string picurl,string piclink,string pictitle)
{
picUrl = picurl;
picLink = piclink;
picTitle = pictitle;
}
public string PicUrl
{
get{ return picUrl;}
}
public string PicLink
{
get{ return picLink;}
}
public string PicTitle
{
get{ return picTitle;}
}
}
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