LoginController________

登录页面通常会有验证码验证信息:

这时候用到

CaptchaUtil 图形验证码工具类：：：：：

package cn.hutool.captcha;

/**
 * 图形验证码工具
 * 
 * @author looly
 * @since 3.1.2
 */
public class CaptchaUtil {

	/**
	 * 创建线干扰的验证码，默认5位验证码，150条干扰线
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @return {@link LineCaptcha}
	 */
	public static LineCaptcha createLineCaptcha(int width, int height) {
		return new LineCaptcha(width, height);
	}

	/**
	 * 创建线干扰的验证码
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @param codeCount 字符个数
	 * @param lineCount 干扰线条数
	 * @return {@link LineCaptcha}
	 */
	public static LineCaptcha createLineCaptcha(int width, int height, int codeCount, int lineCount) {
		return new LineCaptcha(width, height, codeCount, lineCount);
	}

	/**
	 * 创建圆圈干扰的验证码，默认5位验证码，15个干扰圈
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @return {@link CircleCaptcha}
	 * @since 3.2.3
	 */
	public static CircleCaptcha createCircleCaptcha(int width, int height) {
		return new CircleCaptcha(width, height);
	}

	/**
	 * 创建圆圈干扰的验证码
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @param codeCount 字符个数
	 * @param circleCount 干扰圆圈条数
	 * @return {@link CircleCaptcha}
	 * @since 3.2.3
	 */
	public static CircleCaptcha createCircleCaptcha(int width, int height, int codeCount, int circleCount) {
		return new CircleCaptcha(width, height, codeCount, circleCount);
	}
	
	/**
	 * 创建扭曲干扰的验证码，默认5位验证码
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @return {@link ShearCaptcha}
	 * @since 3.2.3
	 */
	public static ShearCaptcha createShearCaptcha(int width, int height) {
		return new ShearCaptcha(width, height);
	}
	
	/**
	 * 创建扭曲干扰的验证码，默认5位验证码
	 * 
	 * @param width 图片宽
	 * @param height 图片高
	 * @param codeCount 字符个数
	 * @param thickness 干扰线宽度
	 * @return {@link ShearCaptcha}
	 * @since 3.3.0
	 */
	public static ShearCaptcha createShearCaptcha(int width, int height, int codeCount, int thickness) {
		return new ShearCaptcha(width, height, codeCount, thickness);
	}
}

package cn.yunmark.login.controller;

import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.LineCaptcha;
import cn.hutool.core.date.DateUtil;
import cn.yunmark.aop.logging.annotation.ApiLog;
import cn.yunmark.common.redis.RedisUtils;
import cn.yunmark.common.utils.ResponseUtil;
import cn.yunmark.core.errors.ErrorConstants;
import cn.yunmark.examdetail.service.ExamDetailService;
import cn.yunmark.examdetail.service.dto.ExamDetailDTO;
import cn.yunmark.grade.service.StudentGradeService;
import cn.yunmark.grade.service.dto.StudentGradeDTO;
import cn.yunmark.grade.service.dto.StudentInfoExcelDTO;
import cn.yunmark.login.model.LoginDTO;
import cn.yunmark.login.model.LoginVo;
import cn.yunmark.security.jwt.TokenProvider;
import cn.yunmark.security.util.SecurityUtils;
import cn.yunmark.sys.constant.enums.LogTypeEnum;
import cn.yunmark.sys.model.LoginForm;
import cn.yunmark.sys.service.dto.UserDTO;
import cn.yunmark.sys.utils.UserUtils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AccountExpiredException;
import org.springframework.web.bind.annotation.*;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * 学生登录Controller
 * @author yunmark
 * @version @2022/3/25 22:01
 */
@Api(tags ="学生成绩信息")
@Slf4j
@RestController
@RequestMapping(value = "/zsb/student")
public class StudentLoginController {

    @Autowired
    private StudentGradeService studentGradeService;

    @Autowired
    private ExamDetailService examDetailService;

    /**
     * 用户登录
     * @param loginForm
     * @param session
     * @return
     */
    @PostMapping("check")
    @ApiLog(value = "用户校验", type = LogTypeEnum.LOGIN)
    @ApiOperation("登录接口")
    public Map login(@RequestBody LoginDTO loginForm,String codeSign) {
        Map res = new HashMap<>();
        String sfzh = loginForm.getSfzh();
        String code = loginForm.getCode();
        String ksh = loginForm.getKsh();
        RedisUtils utils = RedisUtils.getInstance();
        String rediscode = (String) utils.get(codeSign);
        if (!code.equals(rediscode) && null != code) {
            res.put("code", 500);
            res.put("msg", "考生信息有误，请确认后重新输入");
            return res;
        }

        String nf = DateUtil.format(new Date(), "yyyy");
        StudentGradeDTO studentGradeDTO = studentGradeService.selectOneStd(ksh, sfzh, nf);
        if (studentGradeDTO == null) {
            res.put("code", 500);
            res.put("msg", "身份信息有误");
            return res;
        }

        //获取有效考试须知
        ExamDetailDTO examDetailDTO = examDetailService.getByStatus(nf);
        if (examDetailDTO == null) {
            examDetailDTO = examDetailService.getDefault();
        }
        LoginVo loginVo = new LoginVo();
        loginVo.setExamDetailDTO(examDetailDTO);
        loginVo.setStudentGradeDTO(studentGradeDTO);
        res.put("code", 200);
        res.put("msg", "校验成功");
        res.put("data", loginVo);
        return res;
    }

        /**
     * 获取登陆验证码
     * @param response
     * @param session
     * @throws
     */
    @ApiOperation ("获取验证码")
    @ApiLog("获取验证码")
    @GetMapping("getCode")
    public void getCode(HttpServletResponse response, HttpSession session){
        //HuTool定义图形验证码的长和宽,验证码的位数，干扰线的条数
        LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(116, 36,4,50);
        //将验证码放入session
        session.setAttribute("code",lineCaptcha.getCode());
        try {
            ServletOutputStream outputStream = response.getOutputStream();
            lineCaptcha.write(outputStream);
            outputStream.close();
        } catch (IOException e) {
            log.error ("{}", e );
        }
    }

}