<!--r /> '函数功能：远程图片自动保存到本地服务器，并利用aspjpeg为图片加上水印
'（注意：请先在目录下创建images目录，用来保存临时图片）
'本程序需要在服务器上安装"aspjpeg组件"否则无法正常使用
'也可以只取'''''22222222'''''''以上的部分,这部分可以保存图片,第二部分是进行水印增加
'使用方法,请保存为saveimg.asp
'saveimg.asp?url=/XrssFile/2007-9/17/200791792858379.gif 即可以取下图片啦,HOHO. 其他需要加的功能,大家自己扩展好啦
'如何获取其他后缀名的文件呢? 当然也可以啦
'(jpg|gif|png|bmp)改成(mp3)明白吧? 就是取mp3后缀的文件名.以此类推. 嘻嘻
'俺要落伍. 发了二份原创,一份是惊云下载系统偷天空时防止出现连接来自天空软件站的程序,有需要的在落伍里面搜索我的贴子
'不要忘了使用时在目录下建images的保存目录哦
Server.ScriptTimeOut=99999
const savepath="images" '图片保存路径
url=request("url")
function myreplace(str)
newstr=str
set objregEx = new RegExp
objregEx.IgnoreCase = true
objregEx.Global = true
objregEx.Pattern = "http://(.+?)\.(jpg|gif|png|bmp)" '定义文件后缀
set matches = objregEx.execute(str)
for each match in matches
newstr=replace(newstr,match.value,saveimg(match.value))
next
myreplace=newstr
end function
function saveimg(url)
temp=split(url,".")
'以下是用时间与随机数重命名文件名
randomize
ranNum=int(90000*rnd)+10000
filename=year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&ranNum&"."&temp(ubound(temp))
'文件名重命名结束
set xmlhttp=server.createobject("Microsoft.XMLHTTP")
xmlhttp.open "get",url,false
xmlhttp.send
img=xmlhttp.ResponseBody
set xmlhttp=nothing
set objAdostream=server.createobject("ADODB.Stream")
objAdostream.Open()
objAdostream.type=1
objAdostream.Write(img)
objAdostream.SaveToFile(server.mappath(savepath&filename))
objAdostream.SetEOS
set objAdostream=nothing
'''''''222222222'''''''''''
saveimg=savepath&filename '获取保存路径
Dim Jpeg
Set Jpeg = Server.CreateObject("Persits.Jpeg")
Jpeg.Open Server.MapPath(saveimg) '打开保存图片的路径
' 添加文字水印
Jpeg.Canvas.Font.Color = &HFF0000' 红色
Jpeg.Canvas.Font.Family = "宋体"
Jpeg.Canvas.Font.Bold = True
Jpeg.Canvas.Print Jpeg.OriginalWidth-200,Jpeg.OriginalHeight-50, "www.sina.com" '水印离左边的距离,离顶端的距离,这个是放在右下脚了
'保存文件
Jpeg.Save Server.MapPath(saveimg) '保存添加水印后的图片
' 注销对象
Set Jpeg = Nothing
end function
-->
ASP.NET(C#)版本：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
/// <summary>
/// SaveRemoteFile 的摘要说明
/// </summary>
public class SaveRemoteFile : Page
{
public SaveRemoteFile()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public string Pic_Remote(string news_Content,DropDownList ddl)
{
string htmlStr = news_Content;
string file = DateTime.Now.ToString("yyyyMM").Substring(0, 6); //当前年月
string day = DateTime.Now.ToString("dd"); //当天号数
string path = "/WebSite/RemoteFile/" + file + "/" + day;
Directory.CreateDirectory(Server.MapPath(path));
string returnValue = "";
returnValue = SaveUrlPics(htmlStr, path, file, day, ddl);
return returnValue;
}
//下载图片到本地
private string SaveUrlPics(string strHTML, string path, string nowyymm, string nowdd,DropDownList ddl)
{
string[] imgurlAry = GetImgTag(strHTML);
try
{
for (int i = 0; i < imgurlAry.Length; i++)
{
//WebRequest req = WebRequest.Create(imgurlAry[i]);
string fileName = DateTime.Now.ToString("yyyyMMddhhmmssfffff").Substring(0, 17);
WebClient wc = new WebClient();
if (imgurlAry[i] != "")
{
wc.DownloadFile(imgurlAry[i], Server.MapPath(path) + "/" + fileName + imgurlAry[i].Substring(imgurlAry[i].LastIndexOf(".")));
//替换原图片地址
string imgPath = "/WebSite/RemoteFile/" + nowyymm + "/" + nowdd;
ddl.Items.Add(imgPath + "/" + fileName + imgurlAry[i].Substring(imgurlAry[i].LastIndexOf(".")));
strHTML = strHTML.Replace(imgurlAry[i], imgPath + "/" + fileName + imgurlAry[i].Substring(imgurlAry[i].LastIndexOf(".")));
}
}
}
catch
{
//return ex.Message;
}
return strHTML;
}
//获取图片标志
public string[] GetImgTag(string htmlStr)
{
Regex regObj = new Regex("<img.+?>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
string[] strAry = new string[regObj.Matches(htmlStr).Count];
int i = 0;
foreach (Match matchItem in regObj.Matches(htmlStr))
{
strAry[i] = GetImgUrl(matchItem.Value);
i++;
}
return strAry;
}
//获取图片URL地址
private string GetImgUrl(string imgTagStr)
{
string str = "";
Regex regObj = new Regex("http://.+.(?:jpg|gif|bmp|png)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
foreach (Match matchItem in regObj.Matches(imgTagStr))
{
str = matchItem.Value;
}
return str;
}
}
asp.net(C#)版本2：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
//引入空间
using System.Net;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;
/// <summary>
/// 采集
/// </summary>
public class caiji
{
public caiji()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 要采集的网页的连接地址
/// </summary>
/// <param name="url">url</param>
/// <returns></returns>
public static string caijiByUrl(string url,string chargest,string path)
{
string str = GetSourceTextByUrl(url,chargest);
ArrayList lib = new ArrayList();
int i = 0;
//根据url取得网站域名
Uri uri = new Uri(url);
//Scheme或者协议，一般为http,Host为取得域名
string baseurl = uri.Scheme + "://" + uri.Host + "/";
//提取出url，包括src等信息
//\S匹配任何非空白字符
Regex g = new Regex(@"(src=(""|\')\S+\.(gif|jpg|png|bmp)(""|\'))", RegexOptions.Multiline | RegexOptions.IgnoreCase);
MatchCollection m = g.Matches(str);
foreach (Match math in m)
{
//已经提取到图片的路径了，但还需要分绝对路径，相对路径，以及后缀名是否为图片，因为可能为.asp,.aspx这些，比如验证码图片
string imgUrl = math.Groups[0].Value.ToLower();//转成小写,=号之间可能有不定的空格
//去除src与单引号，双引号
imgUrl = imgUrl.Replace("src","");
imgUrl = imgUrl.Replace("\"","");
imgUrl = imgUrl.Replace("'","");
imgUrl = imgUrl.Replace("=","");
imgUrl = imgUrl.Trim();
//路径处理
if (imgUrl.Substring(0, 4) != "http")
{
//需要判断是否是绝对路径还是相对路径
if (imgUrl.Substring(0, 1) == "/")
{
imgUrl = baseurl + imgUrl;
}
else
{
imgUrl = url.Substring(0,url.LastIndexOf("/") + 1) + imgUrl;
}
}
//判断元素是否已经存在,-1为不存在
if (lib.IndexOf(imgUrl) == -1)
{
lib.Add(imgUrl);
}
}
string str_ = string.Empty;
WebClient client = new WebClient();
for (int j = 0; j < lib.Count; j++)
{
string savepath = path + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Minute + DateTime.Now.Second + j + lib[j].ToString().Substring((lib[j].ToString().Length) -4,4);
try
{
client.DownloadFile(new Uri(lib[j].ToString()), savepath);
str_ += lib[j].ToString() + "<br /> 保存路径为：" + savepath + "<br /><br />";
}
catch (Exception e)
{
str_ += e.Message;
}
}
return str_;
}
public static string GetSourceTextByUrl(string url,string chargest)
{
WebRequest request = WebRequest.Create(url);
request.Timeout = 20000;//20秒超时
WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream,Encoding.GetEncoding(chargest));
return sr.ReadToEnd();
}
}
使用：比如我是保存到upload文件夹中的：
string path = Server.MapPath("~/upload/");
Response.Write(caiji.caijiByUrl(http://www.zexue.com, "utf-8", path));