BASE64test

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStream;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class Base64Test {public static void main(String[] args) throws IOException {String s = transByte();decodeBase64(s);}public static String transByte() throws IOException{File file = new File("C://images//2012041910064-60//10066-10//2.png");FileInputStream fis;String imgStr = "";try {fis = new FileInputStream(file);byte[] bytes = new byte[fis.available()];fis.read(bytes);BASE64Encoder encoder = new BASE64Encoder();imgStr = encoder.encode(bytes);System.out.println(imgStr);} catch (FileNotFoundException e) {e.printStackTrace();}return imgStr;}/** * base64图片流解码 * @param imgStr */public static void decodeBase64(String imgStr){BASE64Decoder decoder = new BASE64Decoder();        //Base64解码         byte[] b;try {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 = "d://222.png";//新生成的图片  OutputStream out = new FileOutputStream(imgFilePath);      out.write(b);  out.flush();  out.close(); } catch (IOException e) {e.printStackTrace();}  }}