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com.anji.captcha.service.impl.ClickWordCaptchaServiceImpl Maven / Gradle / Ivy
/*
*Copyright © 2018 anji-plus
*安吉加加信息技术有限公司
*http://www.anji-plus.com
*All rights reserved.
*/
package com.anji.captcha.service.impl;
import com.alibaba.fastjson.JSONObject;
import com.anji.captcha.model.common.RepCodeEnum;
import com.anji.captcha.model.common.ResponseModel;
import com.anji.captcha.model.vo.CaptchaVO;
import com.anji.captcha.model.vo.PointVO;
import com.anji.captcha.util.AESUtil;
import com.anji.captcha.util.ImageUtils;
import com.anji.captcha.util.RandomUtils;
import com.anji.captcha.util.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.util.*;
import java.util.List;
/**
* 点选文字验证码
*
* Created by raodeming on 2019/12/25.
*/
@Component(value = "clickWordCaptchaService")
public class ClickWordCaptchaServiceImpl extends AbstractCaptchaservice {
private static Logger logger = LoggerFactory.getLogger(ClickWordCaptchaServiceImpl.class);
@Value("${captcha.water.mark:'我的水印'}")
private String waterMark;
@Value("${captcha.water.font:'宋体'}")
private String waterMarkFont;
@Value("${captcha.font.type:'宋体'}")
private String fontType;
private static Boolean captchaAesStatus;
@Value("${captcha.aes.status:true}")
public void setCaptchaAesStatus(Boolean captchaAesStatus) {
ClickWordCaptchaServiceImpl.captchaAesStatus = captchaAesStatus;
}
@Override
public ResponseModel get(CaptchaVO captchaVO) {
BufferedImage bufferedImage = ImageUtils.getPicClick();
CaptchaVO imageData = getImageData(bufferedImage);
if (imageData == null
|| StringUtils.isBlank(imageData.getOriginalImageBase64())) {
return ResponseModel.errorMsg(RepCodeEnum.API_CAPTCHA_ERROR);
}
return ResponseModel.successData(imageData);
}
@Override
public ResponseModel check(CaptchaVO captchaVO) {
//取坐标信息
String codeKey = String.format(REDIS_CAPTCHA_KEY, captchaVO.getToken());
if (!captchaCacheService.exists(codeKey)) {
return ResponseModel.errorMsg(RepCodeEnum.API_CAPTCHA_INVALID);
}
String s = captchaCacheService.get(codeKey);
//验证码只用一次，即刻失效
captchaCacheService.delete(codeKey);
List point = null;
List point1 = null;
String pointJson = null;
/**
* [
* {
* "x": 85.0,
* "y": 34.0
* },
* {
* "x": 129.0,
* "y": 56.0
* },
* {
* "x": 233.0,
* "y": 27.0
* }
* ]
*/
try {
point = JSONObject.parseArray(s, PointVO.class);
//aes解密
pointJson = decrypt(captchaVO.getPointJson(), point.get(0).getSecretKey());
point1 = JSONObject.parseArray(pointJson, PointVO.class);
} catch (Exception e) {
logger.error("验证码坐标解析失败", e);
return ResponseModel.errorMsg(e.getMessage());
}
for (int i = 0; i < point.size(); i++) {
if (point.get(i).x-HAN_ZI_SIZE > point1.get(i).x
|| point1.get(i).x > point.get(i).x+HAN_ZI_SIZE
|| point.get(i).y-HAN_ZI_SIZE > point1.get(i).y
|| point1.get(i).y > point.get(i).y+HAN_ZI_SIZE) {
return ResponseModel.errorMsg(RepCodeEnum.API_CAPTCHA_COORDINATE_ERROR);
}
}
//校验成功，将信息存入缓存
String secretKey = point.get(0).getSecretKey();
String value = null;
try {
value = AESUtil.aesEncrypt(captchaVO.getToken().concat("---").concat(pointJson), secretKey);
} catch (Exception e) {
logger.error("AES加密失败", e);
return ResponseModel.errorMsg(e.getMessage());
}
String secondKey = String.format(REDIS_SECOND_CAPTCHA_KEY, value);
captchaCacheService.set(secondKey, captchaVO.getToken(), EXPIRESIN_THREE);
captchaVO.setResult(true);
return ResponseModel.successData(captchaVO);
}
@Override
public ResponseModel verification(CaptchaVO captchaVO) {
return null;
}
private CaptchaVO getImageData(BufferedImage backgroundImage) {
CaptchaVO dataVO = new CaptchaVO();
List wordList = new ArrayList();
List pointList = new ArrayList();
Graphics backgroundGraphics = backgroundImage.getGraphics();
int width = backgroundImage.getWidth();
int height = backgroundImage.getHeight();
Font font = new Font(fontType, Font.BOLD, HAN_ZI_SIZE);
int wordCount = getWordTotalCount();
//定义随机1到arr.length某一个字不参与校验
int num = RandomUtils.getRandomInt(1, wordCount);
Set currentWords = new HashSet();
String secretKey = null;
if (captchaAesStatus) {
secretKey = AESUtil.getKey();
}
for (int i = 0; i < wordCount; i++) {
String word;
do {
word = RandomUtils.getRandomHan(HAN_ZI);
currentWords.add(word);
} while (!currentWords.contains(word));
//随机字体坐标
PointVO point = randomWordPoint(width, height, i, wordCount);
point.setSecretKey(secretKey);
//随机字体颜色
if (isFontColorRandom()){
backgroundGraphics.setColor(new Color(RandomUtils.getRandomInt(1,255),RandomUtils.getRandomInt(1,255),RandomUtils.getRandomInt(1,255)));
} else {
backgroundGraphics.setColor(Color.BLACK);
}
//设置角度
AffineTransform affineTransform = new AffineTransform();
affineTransform.rotate(Math.toRadians(RandomUtils.getRandomInt(-45, 45)), 0, 0);
Font rotatedFont = font.deriveFont(affineTransform);
backgroundGraphics.setFont(rotatedFont);
backgroundGraphics.drawString(word, (int)point.getX(), (int)point.getY());
if ((num-1) != i) {
wordList.add(word);
pointList.add(point);
}
}
Font watermark = new Font(waterMarkFont, Font.BOLD, HAN_ZI_SIZE/2);
backgroundGraphics.setFont(watermark);
backgroundGraphics.setColor(Color.white);
backgroundGraphics.drawString(waterMark, width-((HAN_ZI_SIZE/2)*(waterMark.length()))-5, height-(HAN_ZI_SIZE/2)+7);
//创建合并图片
BufferedImage combinedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics combinedGraphics = combinedImage.getGraphics();
combinedGraphics.drawImage(backgroundImage, 0, 0, null);
dataVO.setOriginalImageBase64(ImageUtils.getImageToBase64Str(backgroundImage).replaceAll("\r|\n", ""));
//pointList信息不传到前端，只做后端check校验
//dataVO.setPointList(pointList);
dataVO.setWordList(wordList);
dataVO.setToken(RandomUtils.getUUID());
dataVO.setSecretKey(secretKey);
//将坐标信息存入redis中
String codeKey = String.format(REDIS_CAPTCHA_KEY, dataVO.getToken());
captchaCacheService.set(codeKey, JSONObject.toJSONString(pointList), EXPIRESIN_SECONDS);
// base64StrToImage(getImageToBase64Str(backgroundImage), "D:\\点击.png");
return dataVO;
}
/**
* 随机字体循环排序下标
* @param imageWidth 图片宽度
* @param imageHeight 图片高度
* @param wordSortIndex 字体循环排序下标(i)
* @param wordCount 字数量
* @return
*/
private static PointVO randomWordPoint(int imageWidth, int imageHeight, int wordSortIndex, int wordCount) {
int avgWidth = imageWidth / (wordCount+1);
int x, y;
if (avgWidth < HAN_ZI_SIZE_HALF){
x = RandomUtils.getRandomInt(1+HAN_ZI_SIZE_HALF, imageWidth);
} else {
if (wordSortIndex == 0) {
x = RandomUtils.getRandomInt(1+HAN_ZI_SIZE_HALF, avgWidth * (wordSortIndex+1) - HAN_ZI_SIZE_HALF );
}else {
x = RandomUtils.getRandomInt(avgWidth * wordSortIndex + HAN_ZI_SIZE_HALF, avgWidth * (wordSortIndex+1) -HAN_ZI_SIZE_HALF );
}
}
y = RandomUtils.getRandomInt(HAN_ZI_SIZE, imageHeight - HAN_ZI_SIZE);
return new PointVO(x, y, null);
}
}
