JAVA字符串和base64互转

base64 转字符串

 /**
  * 图片转BASE64
  */
  public void encoder() {
      UploadFile file = getFile();
      BASE64Encoder encoder = new BASE64Encoder();
      byte[] imgBase = imageBase64(file.getFile());
      String endcoderStr = encoder.encode(imgBase);
  }
  public byte[] imageBase64(File file) {
    FileInputStream fis;
    byte[] bytes = null;
    try {
      fis = new FileInputStream(file);
      bytes = new byte[fis.available()];
      fis.read(bytes);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return bytes;
  }

字符串转base64

 /**
   * 字符串转byte
   */
  public void decoder(String endcoderStr) throws IOException {
      BASE64Decoder decoder = new BASE64Decoder();
      byte[] imgBase = decoder.decodeBuffer(endcoderStr);
  }