/*
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* Copyright 2017-2020 吴学文 and java110 team.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.java110.utils.util;
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import org.apache.commons.codec.digest.DigestUtils;
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import javax.imageio.ImageIO;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.net.URL;
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/**
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* @desc add by 吴学文 16:41
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*/
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public class ImageUtils {
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public static String getBase64ByImgUrl(String url) {
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String suffix = url.substring(url.lastIndexOf(".") + 1);
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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try {
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URL urls = new URL(url);
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Image image = Toolkit.getDefaultToolkit().getImage(urls);
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BufferedImage biOut = toBufferedImage(image);
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ImageIO.write(biOut, suffix, baos);
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String base64Str = Base64Convert.byteToBase64(baos.toByteArray());
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return base64Str;
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} catch (Exception e) {
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return "";
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}finally {
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try {
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baos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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public static String getMd5ByImgUrl(String url) {
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String suffix = url.substring(url.lastIndexOf(".") + 1);
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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try {
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URL urls = new URL(url);
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Image image = Toolkit.getDefaultToolkit().getImage(urls);
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BufferedImage biOut = toBufferedImage(image);
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ImageIO.write(biOut, suffix, baos);
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return DigestUtils.md5Hex(baos.toByteArray());
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} catch (Exception e) {
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return "";
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}finally {
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try {
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baos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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public static BufferedImage toBufferedImage(Image image) {
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if (image instanceof BufferedImage) {
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return (BufferedImage) image;
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}
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// This code ensures that all the pixels in the image are loaded
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image = new ImageIcon(image).getImage();
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BufferedImage bimage = null;
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GraphicsEnvironment ge = GraphicsEnvironment
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.getLocalGraphicsEnvironment();
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try {
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int transparency = Transparency.OPAQUE;
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GraphicsDevice gs = ge.getDefaultScreenDevice();
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GraphicsConfiguration gc = gs.getDefaultConfiguration();
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bimage = gc.createCompatibleImage(image.getWidth(null),
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image.getHeight(null), transparency);
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} catch (HeadlessException e) {
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// The system does not have a screen
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}
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if (bimage == null) {
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// Create a buffered image using the default color model
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int type = BufferedImage.TYPE_INT_RGB;
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bimage = new BufferedImage(image.getWidth(null),
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image.getHeight(null), type);
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}
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// Copy image to buffered image
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Graphics g = bimage.createGraphics();
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// Paint the image onto the buffered image
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g.drawImage(image, 0, 0, null);
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g.dispose();
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return bimage;
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}
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}
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