java Base64

s

Base64Test.java

https://www.cnblogs.com/mr-wuxiansheng/p/6931034.html

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package com.iteye.lindows.base64;   import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream;   import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder;   public class Base64Test {     // 图片转化成base64字符串     public static String GetImageStr() {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理         String imgFile = "C:\\Users\\Lindows\\Desktop\\png.png";// 待处理的图片         InputStream in = null;         byte[] data = null;         // 读取图片字节数组         try {             in = new FileInputStream(imgFile);             data = new byte[in.available()];             in.read(data);             in.close();         } catch (IOException e) {             e.printStackTrace();         }         // 对字节数组Base64编码         BASE64Encoder encoder = new BASE64Encoder();         return encoder.encode(data);// 返回Base64编码过的字节数组字符串     }       // base64字符串转化成图片     public static boolean GenerateImage(String imgStr) { // 对字节数组字符串进行Base64解码并生成图片         if (imgStr == null) // 图像数据为空             return false;         BASE64Decoder decoder = new BASE64Decoder();         try {             // Base64解码             byte[] b = decoder.decodeBuffer(imgStr);             for (int i = 0; i < b.length; ++i) {                 if (b[i] < 0) {// 调整异常数据                     b[i] += 256;                 }             }             // 生成jpeg图片             String imgFilePath = "C:\\Users\\Lindows\\Desktop\\png2.jpg";// 新生成的图片             OutputStream out = new FileOutputStream(imgFilePath);             out.write(b);             out.flush();             out.close();             return true;         } catch (Exception e) {             return false;         }     }               public static void main(String[] args) {         String strImg = Base64Test.GetImageStr();         System.out.println(strImg);         Base64Test.GenerateImage(strImg);     } }

　　

 

 

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