Commit ecf584923aa538890d5969ab6f8d2a3ac910a5d2
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cb720a7a
ImageUtil
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src/main/java/com/diligrp/xtrade/product/common/utils/ImageUtil.java
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| 1 | +package com.diligrp.xtrade.product.common.utils; | |
| 2 | + | |
| 3 | +import java.awt.image.BufferedImage; | |
| 4 | +import java.io.IOException; | |
| 5 | +import java.io.InputStream; | |
| 6 | +import java.security.MessageDigest; | |
| 7 | +import java.security.NoSuchAlgorithmException; | |
| 8 | + | |
| 9 | +import javax.imageio.ImageIO; | |
| 10 | + | |
| 11 | +import com.diligrp.xtrade.product.exception.ExceptionEnum; | |
| 12 | +import com.diligrp.xtrade.product.exception.ProductException; | |
| 13 | + | |
| 14 | + | |
| 15 | +/** | |
| 16 | + * | |
| 17 | + * <B>Description</B> 图片工具类 <br /> | |
| 18 | + * <B>Copyright</B> Copyright (c) 2015 www.diligrp.com All rights reserved. <br /> | |
| 19 | + * 本软件源代码版权归地利集团,未经许可不得任意复制与传播.<br /> | |
| 20 | + * <B>Company</B> 地利集团 | |
| 21 | + * @createTime 2015年4月24日 上午11:30:36 | |
| 22 | + * @author celine | |
| 23 | + */ | |
| 24 | +public class ImageUtil { | |
| 25 | + | |
| 26 | + /** | |
| 27 | + * 检测文件是否是图片 | |
| 28 | + * @param inputStream | |
| 29 | + * @return | |
| 30 | + * @createTime 2015年4月24日 上午11:35:29 | |
| 31 | + * @author celine | |
| 32 | + */ | |
| 33 | + public static Boolean isImage(InputStream inputStream) { | |
| 34 | + try { | |
| 35 | + BufferedImage bi = ImageIO.read(inputStream); | |
| 36 | + return null == bi ? false : true; | |
| 37 | + } catch (IOException e) { | |
| 38 | + throw new ProductException(ExceptionEnum.FILE_UP_ERROR); | |
| 39 | + } | |
| 40 | + } | |
| 41 | + | |
| 42 | + public static Boolean checkImageSize(InputStream inputStream, int maxWidth, int maxHeight, int minWidth, | |
| 43 | + int minHeight) { | |
| 44 | + try { | |
| 45 | + BufferedImage bi = ImageIO.read(inputStream); | |
| 46 | + if (bi != null) { | |
| 47 | + if (bi.getWidth() <= maxWidth && bi.getHeight() <= maxHeight && bi.getWidth() >= minWidth | |
| 48 | + && bi.getHeight() >= minHeight) { | |
| 49 | + return true; | |
| 50 | + } | |
| 51 | + } | |
| 52 | + return false; | |
| 53 | + } catch (IOException e) { | |
| 54 | + throw new ProductException(ExceptionEnum.FILE_UP_ERROR); | |
| 55 | + } | |
| 56 | + } | |
| 57 | + | |
| 58 | + public static String getMd5(byte[] imgBytes) { | |
| 59 | + if (imgBytes != null && imgBytes.length > 0) { | |
| 60 | + StringBuilder sb = new StringBuilder(); | |
| 61 | + MessageDigest md5; | |
| 62 | + try { | |
| 63 | + md5 = MessageDigest.getInstance("MD5"); | |
| 64 | + } catch (NoSuchAlgorithmException e) { | |
| 65 | + throw new ProductException(ExceptionEnum.FILE_UP_ERROR); | |
| 66 | + } | |
| 67 | + md5.update(imgBytes); | |
| 68 | + for (byte by : md5.digest()) { | |
| 69 | + sb.append(String.format("%02X", by)); | |
| 70 | + } | |
| 71 | + return sb.toString(); | |
| 72 | + } | |
| 73 | + return ""; | |
| 74 | + } | |
| 75 | + | |
| 76 | +} | ... | ... |