多媒体照片打成压缩包上传 (二)

最新推荐文章于 2025-04-28 13:29:30 发布

转载最新推荐文章于 2025-04-28 13:29:30 发布 · 69 阅读

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/macT/p/9970851.html

本文介绍了一个使用C#编写的程序，该程序能够从ZIP文件中解压图片，并将其转换为byte数组以便进一步处理。文章详细展示了如何利用ICSharpCode.SharpZipLib库进行解压缩操作，以及如何使用System.Drawing命名空间中的类将图片读取并转换为byte数组。

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using ICSharpCode.SharpZipLib.Zip;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Media
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            FileUploadDTO dt = new FileUploadDTO();
            DateTime startTime;
            TimeSpan resultTime;
            ulong dateVal = 0;
            OpenFileDialog f1 = new OpenFileDialog();
            f1.Title = "文件上传";
            f1.Filter = "压缩包(*.zip)|*.zip";
            string deletepath = string.Empty;
            // string mediapath = string.Empty; 
            if (f1.ShowDialog() == DialogResult.OK)
            {
                FileInfo fileInfo = new FileInfo(f1.FileName);
              //  mediapath = f1.FileName; //压缩包服务器上路径
                int K = 0;
                if (!string.IsNullOrEmpty(f1.FileName))
                {
                    startTime = System.DateTime.Now;
                    //传入压缩文件路径在服务器上进行解压，服务器上生成一个名为测试的文件夹
                    UnpackFiles(f1.FileName, Path.GetDirectoryName(f1.FileName) + "\\测试\\");
                    string path = Path.GetDirectoryName(f1.FileName) + "\\测试\\" + Path.GetFileNameWithoutExtension(f1.FileName);//解压后文件路径
                    deletepath = Path.GetDirectoryName(f1.FileName) + "\\测试";//测试文件夹路径
                    //循环遍历解压后的文件，获取里面的数据
                    List<string> list = GetAllFiles(path);
                    foreach (var i in list)
                    {
                        dt.name = Path.GetFileName(i);//9527.txt
                        dt.ext = Path.GetExtension(i);
                        Image image = Image.FromFile( Path.GetFullPath(i));
                        dt.Data = ImageToBytes(image);
                        dt.Offset = 0;
                        Mediaupload _fi = new Mediaupload();
                        _fi.segmentReadUpload(dt);
                        K++;
                    }
                    resultTime = System.DateTime.Now - startTime;
                    dateVal = (ulong)resultTime.TotalSeconds;
                    if (MessageBox.Show(string.Format("导入成功！共导入{0}条,耗时{1}秒", K, dateVal), "提示", MessageBoxButtons.OK) == System.Windows.Forms.DialogResult.OK)
                    {
                       // Directory.Delete(deletepath, true);//删除解压文件
                        //Directory.Delete(mediapath, true);//删除上传的压缩包文件
                        Dispose();
                        Application.Exit();
                    }
                }
            }
        }
        /// <summary>
        /// 将照片转为byte[]
        /// </summary>
        /// <param name="image"></param>
        /// <returns></returns>
        public static byte[] ImageToBytes(Image image)
        {
            ImageFormat format = image.RawFormat;
            using (MemoryStream ms = new MemoryStream())
            {
                image.Save(ms, format);
                return ms.ToArray();
            }
        }
        /// <summary> 
        /// 解压缩 
        /// </summary> 
        /// <param name="file">待解压文件名(包含物理路径)</param> 
        /// <param name="dir"> 解压到哪个目录中(包含物理路径)</param> 
        public static bool UnpackFiles(string file, string dir)
        {
            try
            {
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                //使用ZipInputStream需要引入ICSharpCode.SharpZipLib
                ZipInputStream s = new ZipInputStream(File.OpenRead(file));
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (directoryName != String.Empty)
                    {
                        Directory.CreateDirectory(dir + directoryName);
                    }
                    if (fileName != String.Empty)
                    {
                        FileStream streamWriter = File.Create(dir + theEntry.Name);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                        streamWriter.Close();
                    }
                }
                s.Close();
                return true;
            }
            catch (Exception)
            {
                throw;
            }
        }
        private List<string> GetAllFiles(string path)
        {
            DirectoryInfo dInfo = new DirectoryInfo(path);
            List<string> list = new List<string>();
            //遍历该文件夹
            // GetFloder(dInfo);
            foreach (FileInfo fileitem in dInfo.GetFiles())
            {
                if (fileitem.Extension == ".png" || fileitem.Extension == ".jpg" || fileitem.Extension == ".PNG" || fileitem.Extension == ".JPG")
                {
                    list.Add(fileitem.FullName);
                }
            }
            return list;

        }

    }
}