Java将byte[]转图片存储到本地的案例

import sun.misc.BASE64Encoder;
import java.io.*;

// 传入图片路径，获取图片
FileInputStream fis = new FileInputStream("/Users/curry/error.png");
BufferedInputStream bis = new BufferedInputStream(fis);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buff = new byte[1024];
int len = 0;
while ((len = fis.read(buff)) != -1) {
  bos.write(buff, 0, len);
}
// 得到图片的字节数组
byte[] result = bos.toByteArray();
// 将数组转为字符串
BASE64Encoder encoder = new BASE64Encoder();
String str = encoder.encode(result).trim();

import sun.misc.BASE64Decoder;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

BASE64Decoder decoder = new BASE64Decoder();
byte[] imgbyte = decoder.decodeBuffer("刚刚将字节数组转成的字符串");
OutputStream os = new FileOutputStream("/Users/curry/text.png");
os.write(imgbyte, 0, imgbyte.length);
os.flush();
os.close();

public class Base64Convert {

  /**
   * @Description： 图片转化成base64字符串
   * @param:  path
   * @Return:
   */
  public static String GetImageStr(String path)
  {
    //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
    //待处理的图片
    String imgFile = path;
    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();
    //返回Base64编码过的字节数组字符串
    return encoder.encode(data);
  }
  /**
   * @Description： base64字符串转化成图片
   * @param:   imgStr
   * @Return:
   */
  public static boolean GenerateImage(String imgStr,String photoname)
  {
    //对字节数组字符串进行Base64解码并生成图片
    //图像数据为空
    if (imgStr == null)
      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 imagePath= Config.getUploadPhysicalPath();
      //System.currentTimeMillis()
      //新生成的图片
      String imgFilePath = imagePath+photoname;
      OutputStream out = new FileOutputStream(imgFilePath);
      out.write(b);
      out.flush();
      out.close();
      return true;
    }
    catch (Exception e)
    {
      return false;
    }
  }
}