fix

netflix-web/src/main/java/com/cyksj/web/controller/mini/UserStudentCertController.java

@@ -61,7 +61,7 @@ public class UserStudentCertController {
 	public Result<String> getStudentIdentity(String school, String code, String dsCode) throws Exception {
 		long userId = StpUserUtil.getLoginIdAsLong();
 		User user = userMapper.selectById(userId);
-		if (StrUtil.isEmpty(user.getOpenId())) {
+		if (user == null || StrUtil.isEmpty(user.getOpenId())) {
 			throw BusinessRuntimeException.getInstance("用户未授权");
 		}
 		//是否认证过