C# 根据图片Http地址变为本地图片并放进压缩包

最新推荐文章于 2022-11-23 19:45:55 发布

hujiajun120

最新推荐文章于 2022-11-23 19:45:55 发布

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CC 4.0 BY-SA版权

文章标签： c# string buffer stream null exception

本文链接：https://blog.youkuaiyun.com/hujiajun120/article/details/7192625

本文介绍了如何使用C#编写代码实现将特定目录下的图片压缩为.zip文件，并下载指定URL的图片到本地。

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不作详述

public void getAll(string filePath)
{

string filename = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString();
string strReturn = @"E:/work/";

            filePath = @"E:\work\test\" + filename+".zip";
            using (Zip zip = new Zip(filePath, Zip.CompressionLevel.Default))
            {
                zip.AppendDirectory("E:\\work\\test\\img");
                zip.AppendString(Downloader.DownloadPicture("\\img.jpg", "", 200), Zip.CombinEntry("img", filename + ".jpg"));
            }

Response.Write(strReturn);
}

      public static byte[] DownloadPicture(string picUrl, string savePath, int timeOut)
        {
            //bool value = false;
            WebResponse response = null;
            Stream inStream = null;
            Stream outStream = null;
             byte[] buffer = new byte[1024];
            string resultCode = "";
            try
            {

                WebClient mywebclient = new WebClient();
                string url = "_\\upload_img.jpg";
                string newfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + ".jpg";
                string filepath = @"F:\" + newfilename;
                try
                {
                    buffer = mywebclient.DownloadData(url);
                }
                catch (Exception ex)
                {
                    //MessageBox.Show(ex.ToString());
                }
                return buffer;
            }
            finally
            {
                if (response != null) response.Close();
            }
        }