content: package com.ruoyi.web.controller.system;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import org.apache.shiro.SecurityUtils;
  import org.apache.shiro.authc.AuthenticationException;
  import org.apache.shiro.authc.UsernamePasswordToken;
  import org.apache.shiro.subject.Subject;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import com.ruoyi.common.core.controller.BaseController;
  import com.ruoyi.common.core.domain.AjaxResult;
  import com.ruoyi.common.utils.ServletUtils;
  import com.ruoyi.common.utils.StringUtils;
  
  /**
   * 登录验证
   * 
   * @author ruoyi
   */
  @Controller
  public class SysLoginController extends BaseController
  {
      @GetMapping("/login")
      public String login(HttpServletRequest request, HttpServletResponse response)
      {
          // 如果是Ajax请求，返回Json字符串。
          if (ServletUtils.isAjaxRequest(request))
          {
              return ServletUtils.renderString(response, "{\"code\":\"1\",\"msg\":\"未登录或登录超时。请重新登录\"}");
          }
  
          return "login";
      }
  
      @PostMapping("/login")
      @ResponseBody
      public AjaxResult ajaxLogin(String username, String password, Boolean rememberMe)
      {
          UsernamePasswordToken token = new UsernamePasswordToken(username, password, rememberMe);
          Subject subject = SecurityUtils.getSubject();
          try
          {
              subject.login(token);
              return success();
          }
          catch (AuthenticationException e)
          {
              String msg = "用户或密码错误";
              if (StringUtils.isNotEmpty(e.getMessage()))
              {
                  msg = e.getMessage();
              }
              return error(msg);
          }
      }
  
      @GetMapping("/unauth")
      public String unauth()
      {
          return "error/unauth";
      }
  }
  