diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
index 7f64faf..78af29e 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/rc/impl/PublicJobFairServiceImpl.java
@@ -12,8 +12,10 @@ import com.ruoyi.cms.service.IJobService;
 import com.ruoyi.cms.service.rc.IPublicJobFairService;
 import com.ruoyi.cms.util.RoleUtils;
 import com.ruoyi.common.core.domain.AjaxResult;
+import com.ruoyi.common.core.domain.entity.AppUser;
 import com.ruoyi.common.core.domain.entity.Company;
 import com.ruoyi.common.core.domain.entity.SysUser;
+import com.ruoyi.common.core.domain.model.LoginSiteUser;
 import com.ruoyi.common.core.domain.model.LoginUser;
 import com.ruoyi.common.exception.ServiceException;
 import com.ruoyi.common.utils.SecurityUtils;
@@ -129,7 +131,7 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
             return Collections.emptyList();
         }
 
-        boolean enterpriseRole = RoleUtils.isCompanyAdmin();
+        boolean enterpriseRole = RoleUtils.isCompanyAdminSafe();
         boolean cmsAdmin = SecurityUtils.isLogin() && !enterpriseRole;
         Company currentCompany = enterpriseRole ? getCurrentCompanyOrNull() : null;
         if (enterpriseRole && currentCompany == null) {
@@ -286,7 +288,7 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
     @Override
     @Transactional(rollbackFor = Exception.class)
     public AjaxResult signupCurrentCompany(String jobFairId) {
-        if (!RoleUtils.isCompanyAdmin()) {
+        if (!RoleUtils.isCompanyAdminSafe()) {
             return AjaxResult.error("仅企业用户可以报名招聘会");
         }
         if (StringUtils.isBlank(jobFairId)) {
@@ -545,7 +547,7 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
      * 为企业端列表补充报名状态和按钮状态。
      */
     private void fillCompanyApplyState(List<PublicJobFair> list) {
-        if (list == null || list.isEmpty() || !RoleUtils.isCompanyAdmin()) {
+        if (list == null || list.isEmpty() || !RoleUtils.isCompanyAdminSafe()) {
             return;
         }
         Company company = getCurrentCompanyOrNull();
@@ -588,13 +590,13 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
     }
 
     private void ensureCompanyOperation() {
-        if (!RoleUtils.isCompanyAdmin()) {
+        if (!RoleUtils.isCompanyAdminSafe()) {
             throw new ServiceException("仅企业用户可以维护报名岗位");
         }
     }
 
     private void ensureAdminOperation() {
-        if (RoleUtils.isCompanyAdmin()) {
+        if (RoleUtils.isCompanyAdminSafe()) {
             throw new ServiceException("企业用户不能执行管理员操作");
         }
     }
@@ -647,21 +649,43 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
      * 两种方式都保留，和户外招聘会的企业识别规则一致。
      */
     private Company getCurrentCompanyOrNull() {
-        if (!RoleUtils.isCompanyAdmin() || !SecurityUtils.isLogin()) {
+        if (!RoleUtils.isCompanyAdminSafe()) {
             return null;
         }
-        LoginUser loginUser = SecurityUtils.getLoginUser();
-        if (loginUser == null || loginUser.getUser() == null) {
+        String idCard = null;
+        Long userId = null;
+        String nickName = null;
+        String userName = null;
+
+        //后台登录用户
+        LoginUser loginUser = SecurityUtils.getLoginUserSafe();
+        if (loginUser != null && loginUser.getUser() != null) {
+            SysUser sysUser = loginUser.getUser();
+            userId = loginUser.getUserId() == null ? sysUser.getUserId() : loginUser.getUserId();
+            idCard = sysUser.getIdCard();
+            nickName = sysUser.getNickName();
+            userName = sysUser.getUserName();
+        }
+        // 移动端登录用户
+        else if (SiteSecurityUtils.isLogin()) {
+            LoginSiteUser loginSiteUser = SiteSecurityUtils.getLoginUser();
+            if (loginSiteUser != null && loginSiteUser.getUser() != null) {
+                AppUser siteUser = loginSiteUser.getUser();
+                userId = loginSiteUser.getUserId() == null ? siteUser.getUserId() : loginSiteUser.getUserId();
+                idCard = siteUser.getIdCard();
+                nickName = siteUser.getName();
+                userName = siteUser.getName();
+            }
+        } else {
             return null;
         }
-        SysUser sysUser = loginUser.getUser();
-        if (StringUtils.isNotBlank(sysUser.getIdCard())) {
-            Company company = companyService.queryCodeCompany(sysUser.getIdCard());
+
+        if (StringUtils.isNotBlank(idCard)) {
+            Company company = companyService.queryCodeCompany(idCard);
             if (company != null) {
                 return company;
             }
         }
-        Long userId = loginUser.getUserId() == null ? sysUser.getUserId() : loginUser.getUserId();
         if (userId != null) {
             Company company = companyMapper.selectOne(new LambdaQueryWrapper<Company>()
                     .eq(Company::getUserId, userId)
@@ -673,11 +697,11 @@ public class PublicJobFairServiceImpl implements IPublicJobFairService {
             }
         }
         List<String> names = new ArrayList<>();
-        if (StringUtils.isNotBlank(sysUser.getNickName())) {
-            names.add(sysUser.getNickName());
+        if (StringUtils.isNotBlank(nickName)) {
+            names.add(nickName);
         }
-        if (StringUtils.isNotBlank(sysUser.getUserName()) && !names.contains(sysUser.getUserName())) {
-            names.add(sysUser.getUserName());
+        if (StringUtils.isNotBlank(userName) && !names.contains(userName)) {
+            names.add(userName);
         }
         if (!names.isEmpty()) {
             List<Company> companies = companyMapper.selectList(new LambdaQueryWrapper<Company>()
diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/util/RoleUtils.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/util/RoleUtils.java
index c3035bf..461917c 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/util/RoleUtils.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/util/RoleUtils.java
@@ -1,7 +1,6 @@
 package com.ruoyi.cms.util;
 
 import com.ruoyi.common.core.domain.entity.AppUser;
-import com.ruoyi.common.core.domain.entity.Company;
 import com.ruoyi.common.core.domain.entity.SysUser;
 import com.ruoyi.common.core.domain.model.LoginSiteUser;
 import com.ruoyi.common.core.domain.model.LoginUser;
@@ -31,6 +30,24 @@ public class RoleUtils {
                 .anyMatch(role -> StringUtil.COMPANY_ADMIN_ROLE_KEY.equals(role.getRoleId()));
     }
 
+    /**
+     * 安全获取是否企业账号
+     * @return
+     */
+    public static boolean isCompanyAdminSafe() {
+        LoginUser loginUser = SecurityUtils.getLoginUserSafe();
+        if (loginUser != null && loginUser.getUser() != null && loginUser.getUser().getRoles() != null) {
+            return loginUser.getUser().getRoles().stream()
+                    .anyMatch(role -> StringUtil.COMPANY_ADMIN_ROLE_KEY.equals(role.getRoleId()));
+        }
+        if (SiteSecurityUtils.isLogin()) {
+            LoginSiteUser loginSiteUser = SiteSecurityUtils.getLoginUser();
+            return loginSiteUser != null && loginSiteUser.getUser() != null
+                    && StringUtil.IS_COMPANY_USER.equals(loginSiteUser.getUser().getIsCompanyUser());
+        }
+        return false;
+    }
+
     /**
      * 获取身份证或统一信用代码
      * @return
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/SecurityUtils.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/SecurityUtils.java
index e0843ff..0a37af7 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/SecurityUtils.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/SecurityUtils.java
@@ -95,6 +95,21 @@ public class SecurityUtils
         }
     }
 
+    /**
+     * 安全获取后台登录用户，不会抛异常；类型不匹配/未登录返回null
+     */
+    public static LoginUser getLoginUserSafe() {
+        Authentication authentication = getAuthentication();
+        if (authentication == null) {
+            return null;
+        }
+        Object principal = authentication.getPrincipal();
+        if (principal instanceof LoginUser) {
+            return (LoginUser) principal;
+        }
+        return null;
+    }
+
     /**
      * 获取Authentication
      */