public class EncodeUtils {
	
	private static final String DEFAULT_URL_ENCODING = "UTF-8";
	
	 /**
	  * Base64編碼.
	  */
	public static String base64Encode(byte[] input) {
	     return new String(Base64.encodeBase64(input));
	}
	
	/**
	 * Base64解碼.
	 */
	public static byte[] base64Decode(String input) {
	  return Base64.decodeBase64(input);
	}
}

	/***
     * <p>
     * description: base64字符串轉圖片 
     * <p>
     * @see
     */
    static void base64StringToImage(String base64String) {
        try {
            byte[] bytes1 = EncodeUtils.base64Decode(base64String);
            ByteArrayInputStream bais = new ByteArrayInputStream(bytes1);
            BufferedImage bi1 = ImageIO.read(bais);
            File f1 = new File("F:/wpcache/test/test.jpg");
            ImageIO.write(bi1, "jpg", f1);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

	/***
     * <p>
     * description:圖片轉base64字符串：
     * <p>
     * @see
     */
    public static String getImgStr(String imgFile) {
        // 將圖片文件轉化為字節(jié)數組字符串，并對其進行Base64編碼處理
        InputStream in = null;
        byte[] data = null;
        // 讀取圖片字節(jié)數組
        try {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return EncodeUtils.base64Encode(data);
    }

	public static void main(String[] args) {
        String base64Str = getImgStr("F:/wpcache/2.jpg");
        System.out.println(base64Str);
        base64StringToImage(base64Str);
    }