Base64编码解码工具类

package com.yunjian.build.machine.constant;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;

/**
 * Base64文字转换工具类.
 *
 * @author Yuqisesn
 * @since 2019/11/13
 */
public final class Base64Helper {

  /** 日志控件 */
  private static Logger LOG = LoggerFactory.getLogger(Base64Helper.class);

  /**
   * 读取输入流转化为Base64文字.
   * @param stream 文件输入流
   * @return Base64文字
   */
  public static String streamToString(InputStream stream) {
    byte[] data = null;
    try {
      data = new byte[stream.available()];
      int size = stream.read(data);
      stream.close();
      if (size > 0) {
        return encodeBase64String(data);
      }
    } catch (IOException e) {
      LOG.error("Error in stream to base64 string!", e);
    }