C# 通过WebRequest去访问一个图片的url连接怎么读取图片

majiorxiu 2012-05-15 02:03:42



WebRequest webRequest = WebRequest.Create("http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg");

            HttpWebRequest request = webRequest as HttpWebRequest;

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            string encoding = response.ContentEncoding;

            StreamReader reader = new StreamReader(response.GetResponseStream());

            var xx = reader.ReadToEnd();

            byte[] picbyte = Encoding.Default.GetBytes(xx);

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JeremyChenX 2012-08-30

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刚好遇到这个问题试试看
[Quote=引用 11 楼的回复:]

C# code

WebClient myWebClient = new WebClient();
myWebClient.DownloadFile(new Uri("http://www.7soyo.com/Themes/Default/Images/recom_logo.jpg"), "D:\\temp.jpg");

WebClient 是对httpwebrequest的一个封装,直……
[/Quote]

LittleMo_2012 2012-05-15

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WebClient myWebClient = new WebClient();

myWebClient.DownloadFile(new Uri("http://www.7soyo.com/Themes/Default/Images/recom_logo.jpg"), "D:\\temp.jpg");

WebClient 是对httpwebrequest的一个封装,直接用两句话就下载下来了，不用那么复杂

search001 2012-05-15

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结贴啊。

search001 2012-05-15

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            Stream stream = response.GetResponseStream();

            Image image = Image.FromStream(stream);

            stream.Close();

            pictureBox1.Image = image;

[Quote=引用 7 楼的回复:]

我是把图片放到本地，你可以这样构造Image对象：
C# code
string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";
WebRequest request = (WebRequest)H……
[/Quote]

majiorxiu 2012-05-15

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[Quote=引用 6 楼的回复:]

不能直接得到
[/Quote]
得到了，呵呵
WebRequest webRequest = WebRequest.Create(share.Images);
HttpWebRequest request = webRequest as HttpWebRequest;
WebResponse response = request.GetResponse();
Stream stream = response.GetResponseStream();
Image image=Image.FromStream(stream);
弄一下午了，多谢你给的灵感

search001 2012-05-15

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我是把图片放到本地，你可以这样构造Image对象：

            string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";

            WebRequest request = (WebRequest)HttpWebRequest.Create(strUri);

            WebResponse response = request.GetResponse();



 



            Stream stream = response.GetResponseStream();

            FileStream fileStream = File.Create("aa.jpg");

            Image image = Image.FromStream(stream);

            stream.Close();

            pictureBox1.Image = image;

[Quote=引用 4 楼的回复:]

引用 1 楼的回复:

C# code
string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";
WebRequest request = (WebRequest)HttpWebRequest.Create(strUri……

……
[/Quote]

search001 2012-05-15

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不能直接得到

majiorxiu 2012-05-15

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[Quote=引用 1 楼的回复:]

C# code
string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";
WebRequest request = (WebRequest)HttpWebRequest.Create(strUri……
[/Quote]
或者能直接得到Image的对象吗？

majiorxiu 2012-05-15

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majiorxiu 2012-05-15

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[Quote=引用 2 楼的回复:]

[/Quote]
这只是个测试

search001 2012-05-15

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search001 2012-05-15

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            string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";

            WebRequest request = (WebRequest)HttpWebRequest.Create(strUri);

            WebResponse response = request.GetResponse();



            Stream stream = response.GetResponseStream();

            FileStream fileStream = File.Create("aa.jpg");

            byte []buffer=new byte[1024];

            int numReadByte = 0;

            while ((numReadByte=stream.Read(buffer, 0, 1024))!= 0)

            {

                fileStream.Write(buffer, 0,numReadByte);

            }

            fileStream.Close();

            stream.Close();