package com.iplatform.base.captcha;
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import com.iplatform.base.util.VerifyImgUtil;
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import com.walker.web.CaptchaResult;
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import com.walker.web.CaptchaType;
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import java.awt.image.BufferedImage;
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import java.util.Map;
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/**
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* 拼图滑动验证码，提供者实现。<p></p>
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* 所有验证拼图图像在初始化时加载如内存，提高性能。
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* @author 时克英
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* @date 2023-04-06
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*/
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//public class JigsawCaptchaProvider implements CaptchaProvider<CaptchaResult> {
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public class JigsawCaptchaProvider extends AbstractCaptchaProvider {
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private final static int IMAGE_BG_SIZE = 10;
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private final static int IMAGE_BLOCK_SIZE = 21;
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/**
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* 不能缓存图片，因为要在原图上扣背景，因此必须每次加载原始图片。
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* @date 2023-06-27
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*/
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public JigsawCaptchaProvider(){
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// String imageName = null;
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// try{
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// BufferedImage image = null;
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// for(int i=1; i<IMAGE_BG_SIZE+2; i++){
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// imageName = "images/jigsaw_bg/" + i + ".jpg";
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// image = this.loadBufferedImage(imageName);
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// this.imageCacheMap.put(imageName, image);
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// }
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//
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// for(int j=1; j<IMAGE_BLOCK_SIZE+2; j++){
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// imageName = "images/jigsaw_block/" + j + ".png";
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// image = this.loadBufferedImage(imageName);
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// this.imageCacheMap.put(imageName, image);
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// }
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// logger.info("共加载验证码拼图文件'{}'个", this.imageCacheMap.size());
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//
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// } catch (Exception ex){
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// throw new ApplicationRuntimeException("验证码图片加载错误，imageName=" + imageName, ex);
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// }
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}
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@Override
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public CaptchaResult generateCaptcha(Object param) {
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int n = this.bgRandom.nextInt(10) + 1; //背景
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int m = this.blockRandom.nextInt(21) + 1; //滑块
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try{
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//原图
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String sourceName = "images/jigsaw_bg/" + n + ".jpg";
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// BufferedImage sourceImg = this.imageCacheMap.get(sourceName);
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BufferedImage sourceImg = this.loadBufferedImage(sourceName);
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//抠图模版
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String blockName = "images/jigsaw_block/" + m + ".png";
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BufferedImage templateImg = this.loadBufferedImage(blockName);
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if(sourceImg == null || templateImg == null){
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logger.error("未加载到拼图验证图片资源:" + sourceName + ", or " + blockName);
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return null;
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}
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int w = templateImg.getWidth();
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int h = templateImg.getHeight();
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//获取抠图坐标
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Map<String, Integer> coord = VerifyImgUtil.generateCutoutCoordinates(w, h);
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int x = coord.get("x");
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int y = coord.get("y");
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//获取抠图图形矩阵
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int[][] templateData = VerifyImgUtil.getTemplateData(templateImg);
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//抠图
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Map<String, BufferedImage> r = VerifyImgUtil.initSlidingBlock(sourceImg, templateData, x, y, w, h);
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// Map result = new HashMap();
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// result.put("y", y);
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// result.put("slider", VerifyImgUtil.getBase64(r.get("newTemplateImg")));
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// result.put("bg", VerifyImgUtil.getBase64(r.get("newSourceImg")));
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JigsawResult jigsawResult = new JigsawResult();
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jigsawResult.setX(x);
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jigsawResult.setY(y);
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jigsawResult.setImageSourceBase64(VerifyImgUtil.getBase64(r.get("newSourceImg")));
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jigsawResult.setImageBlockBase64(VerifyImgUtil.getBase64(r.get("newTemplateImg")));
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return jigsawResult;
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} catch (Exception ex){
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logger.error("处理拼图验证图像错误, blockName={}", ex);
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return null;
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}
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}
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@Override
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public CaptchaType getCaptchaType() {
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return CaptchaType.Jigsaw;
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}
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}
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