package com.ruoyi.web.controller.common;
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import cn.hutool.captcha.AbstractCaptcha;
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import cn.hutool.captcha.CircleCaptcha;
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import cn.hutool.captcha.LineCaptcha;
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import cn.hutool.captcha.ShearCaptcha;
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import cn.hutool.captcha.generator.CodeGenerator;
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import cn.hutool.captcha.generator.RandomGenerator;
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import cn.hutool.core.convert.Convert;
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import cn.hutool.core.util.IdUtil;
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import cn.hutool.core.util.StrUtil;
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import com.ruoyi.common.constant.Constants;
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import com.ruoyi.common.core.domain.AjaxResult;
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import com.ruoyi.common.core.redis.RedisCache;
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import com.ruoyi.framework.captcha.UnsignedMathGenerator;
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import com.ruoyi.framework.config.properties.CaptchaProperties;
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import com.ruoyi.system.service.ISysConfigService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RestController;
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import javax.annotation.Resource;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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/**
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* 验证码操作处理
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*
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* @author ruoyi
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*/
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@RestController
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public class CaptchaController {
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// 圆圈干扰验证码
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@Resource(name = "CircleCaptcha")
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private CircleCaptcha circleCaptcha;
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// 线段干扰的验证码
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@Resource(name = "LineCaptcha")
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private LineCaptcha lineCaptcha;
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// 扭曲干扰验证码
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@Resource(name = "ShearCaptcha")
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private ShearCaptcha shearCaptcha;
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@Autowired
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private RedisCache redisCache;
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@Autowired
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private CaptchaProperties captchaProperties;
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@Autowired
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private ISysConfigService configService;
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/**
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* 生成验证码
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*/
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@GetMapping("/captchaImage")
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public AjaxResult getCode() {
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Map<String, Object> ajax = new HashMap<>();
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boolean captchaOnOff = configService.selectCaptchaOnOff();
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ajax.put("captchaOnOff", captchaOnOff);
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if (!captchaOnOff) {
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return AjaxResult.success(ajax);
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}
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// 保存验证码信息
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String uuid = IdUtil.simpleUUID();
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String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
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String code = null;
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// 生成验证码
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CodeGenerator codeGenerator;
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AbstractCaptcha captcha;
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switch (captchaProperties.getType()) {
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case "math":
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codeGenerator = new UnsignedMathGenerator(captchaProperties.getNumberLength());
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break;
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case "char":
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codeGenerator = new RandomGenerator(captchaProperties.getCharLength());
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break;
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default:
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throw new IllegalArgumentException("验证码类型异常");
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}
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switch (captchaProperties.getCategory()) {
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case "line":
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captcha = lineCaptcha;
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break;
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case "circle":
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captcha = circleCaptcha;
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break;
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case "shear":
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captcha = shearCaptcha;
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break;
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default:
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throw new IllegalArgumentException("验证码类别异常");
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}
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captcha.setGenerator(codeGenerator);
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captcha.createCode();
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if ("math".equals(captchaProperties.getType())) {
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code = getCodeResult(captcha.getCode());
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} else if ("char".equals(captchaProperties.getType())) {
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code = captcha.getCode();
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}
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redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
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ajax.put("uuid", uuid);
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ajax.put("img", captcha.getImageBase64());
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return AjaxResult.success(ajax);
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}
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private String getCodeResult(String capStr) {
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int numberLength = captchaProperties.getNumberLength();
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int a = Convert.toInt(StrUtil.sub(capStr, 0, numberLength).trim());
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char operator = capStr.charAt(numberLength);
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int b = Convert.toInt(StrUtil.sub(capStr, numberLength + 1, numberLength + 1 + numberLength).trim());
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switch (operator) {
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case '*':
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return a * b + "";
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case '+':
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return a + b + "";
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case '-':
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return a - b + "";
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default:
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return "";
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}
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}
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}
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