Java base64编码图片代码，base64 jar包

package test; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import Decoder.BASE64Decoder; import Decoder.BASE64Encoder; public class base64 { public static void main(String args[]){ String get= GetImageStr("C:\\Users\\HP\\Desktop\\day01\\a.jpeg"); System.out.println(GenerateImage(get,"C:\\Users\\HP\\Desktop\\day01\\b.jpeg")); } public static String GetImageStr(String imgFile) {//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\\HP\\Desktop\\day01\\e.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 } public static boolean GenerateImage(String imgStr,String topath) { //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 OutputStream out = new FileOutputStream(topath); out.write(b); out.flush(); out.close(); return true; } catch (Exception e) { return false; } } }