src/main/java/com/sums/controller/LoginController.java

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package com.sums.controller;


import com.alibaba.fastjson.JSONObject;
import com.sums.annotations.PermissionVerify;
import com.sums.utils.VerifyCodeUtils;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.ShiroException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author tonghui
 * @since 2022-02-13
 */
@Controller
@RequestMapping({"/sums","/"})
public class LoginController {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    @Value("${code.width}")
    private int width;
    @Value("${code.height}")
    private int height;
    @Value("${code.codeSize}")
    private int codeSize;

    /**
     * 登录页面请求
     * @return
     */
    @GetMapping(value = {"/loginView","/"})
    public String loginView(){
        Subject subject = SecurityUtils.getSubject();
        subject.logout();
        return "studentUnion/login2";
    }

    /**
     * 登录请求
     * @param username 用户名
     * @param password 密码