请教跨站下载问题？

Question

在跨站下载中，如何用webrequest抓，抓完不保存，放在下载中，如何实现？请各位大神帮忙，给个小Demo，谢谢！

Answer 1

放在下载中是什么意思，你暂时的一个byte[]？？

Answer 2

            string html = null;
            string url = "http://china.alibaba.com/keyword/promotion.htm?catId=14";
            WebRequest req = WebRequest.Create(url);
            req.Method = "POST";
            WebResponse res = req.GetResponse();
            Stream receiveStream = res.GetResponseStream();
            //Encoding encode = Encoding.GetEncoding("gb2312");
            //StreamReader sr = new StreamReader(receiveStream, encode);
            byte[] readbuffer = new byte[256];
            int n = receiveStream.Read(readbuffer, 0, 256);
            while (n > 0)
            {
                //string str = new string(readbuffer, 0, n);
                //html += str;
                n = receiveStream .Read(readbuffer, 0, 256);
            }
            //System.Console.Write(html);

Answer 3

那个readbuffer 就是一个缓存区，你需要将每次read到得数据保存到自己定义的byte[]中，那部分我没写，你自己试试

Answer 4

你要下载？那你直接输出到
Respose.Clear();
receiveStream.Write(Respose.OutputStream);
Response.End();

Answer 5

string url = "http://china.alibaba.com/keyword/promotion.htm?catId=14";
WebRequest req = WebRequest.Create(url);
WebResponse res = req.GetResponse();
Stream receiveStream = res.GetResponseStream();
Response.Clear();
receiveStream.Write(Response.OutputStream);
Response.End();

Answer 6

receiveStream.Write(Response.OutputStream);这个有错，

Answer 7

           Stream receiveStream = res.GetResponseStream();
            byte[] buf=new byte[receiveStream.Length];
            receiveStream.Read(buf, 0, buf.Length);
            Response.Clear();
            Response.OutputStream.Write(buf,0,buf.Length);
            Response.End();

Answer 8

 byte[] buf=new byte[receiveStream.Length]; 这句爆出错误，此流不支持查找操作

Answer 9

Stream receiveStream = res.GetResponseStream();
byte[] readbuffer = new byte[256];
int n = receiveStream.Read(readbuffer, 0, 256);
Response.Clear();
while (n > 0)
{
    Response.OutputStream.Write(buf,0,n);
    n = receiveStream .Read(readbuffer, 0, 256);}
Response.End();