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图片转成二进制并且压缩字符串

2024-07-18 19:38:13   227人阅读

今天工作需要写了一个把图片转成字符串，并且压缩的小功能，其中用到了多线程去转换字符串，感觉写的还是不错的，拿出来分享一下

 1  /// <summary> 2         /// 创建多核任务 3         /// </summary> 4         /// <param name="bytimages"></param> 5         /// <param name="count">创建几个核</param> 6         public string[] MoreTask(byte[] bytImages,int count) 7         { 8             string[] temps=new string[count]; 9             Task[] tasks = new Task[count];10             int length = bytImages.Length;11             for (int i = 0; i < count; i++)12             {13                 int a = i;14                 tasks[a] = Task.Factory.StartNew(() => dosomething(out temps[a], (length / count) * a, (length / count) * (a + 1), bytImages));15               //  tasks[i] = Task.Factory.StartNew(() => dosomething(out temps[i], (length / count) * i, (length / count) * (i + 1), bytImages));16             }17             Task.WaitAll(tasks);18           19             return temps;20         }

主要就是利用这个方法开启任意多个线程去处理转换任务。

然后分享一下字符串压缩的方法

using System;using System.Collections.Generic;using System.Data;using System.IO;using System.IO.Compression;using System.Linq;using System.Text;using System.Web;namespace testImage{    public class ZipHelper    {        public static string Compress(string str)        {            //因输入的字符串不是Base64所以转换为Base64,因为HTTP如果不传递Base64则会发生http 400错误            return Convert.ToBase64String(Compress(Convert.FromBase64String(Convert.ToBase64String(Encoding.Default.GetBytes(str)))));        }        public static string Decompress(string str)        {            return Encoding.Default.GetString(Decompress(Convert.FromBase64String(str)));        }        public static byte[] Compress(byte[] bytes)        {            using (MemoryStream ms = new MemoryStream())            {                GZipStream Compress = new GZipStream(ms, CompressionMode.Compress);                Compress.Write(bytes, 0, bytes.Length);                Compress.Close();                return ms.ToArray();            }        }        public static byte[] Decompress(Byte[] bytes)        {            using (MemoryStream tempMs = new MemoryStream())            {                using (MemoryStream ms = new MemoryStream(bytes))                {                    GZipStream Decompress = new GZipStream(ms, CompressionMode.Decompress);                    Decompress.CopyTo(tempMs);                    Decompress.Close();                    return tempMs.ToArray();                }            }        }    }}

　　主要代码就在这里了


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