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  • C#中将图片转化成base64字符串

    厂址:http://www.cnblogs.com/yunfeifei/p/4165351.html

    1.在C#中将图片转化成base64字符串:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.IO;
    
    namespace ConvertImgToBase64
    {
       class Program
       {
          static void Main(string[] args)
          {
             FileInfo file = new FileInfo("1.png");
             var stream = file.OpenRead();
             byte[] buffer = new byte[file.Length];
             //读取图片字节流
             stream.Read(buffer, 0, Convert.ToInt32(file.Length));
             //将base64字符串保存到base64.txt文件中
             StreamWriter sw = new StreamWriter("base64.txt",false, Encoding.UTF8);
             //将字节流转化成base64字符串
             sw.Write(Convert.ToBase64String(buffer));
             sw.Close();
             Console.WriteLine("Convert successful!");
             Console.Read();
          }
       }
    }

    64位编码就存在txt文件中了,

    2.将base64编码的图片嵌入到css中

    .main {
         600px;
        height: 300px;
        background-image:url(data:image/gif;base64,R0lGODlhCAAIAJEAAOnp6eTk5O7m8AAAACH5BAEAAAIALAAAAAAIAAgAAAINjAMJh2q6DnxOVsqmLQA7);
    }

    页面样式应用main时,显示效果为gif背景:

    3.将base64编码的图片直接放到img标签中

    <img src="data:image/jpeg;base64,R0lGODlhCAAIAJEAAOnp6eTk5O7m8AAAACH5BAEAAAIALAAAAAAIAAgAAAINjAMJh2q6DnxOVsqmLQA7" alt="Base64 encoded image" /> 

    这样也能将字节流加载到页面成jpg图片

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  • 原文地址:https://www.cnblogs.com/shy1766IT/p/5027061.html
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