小修改

src/main/java/jty/expressdistributionsystem/controller/CommonController.java

@@ -23,6 +23,7 @@ import org.springframework.web.bind.annotation.*;
 import java.time.LocalDateTime;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.concurrent.TimeUnit;
 
@@ -67,7 +68,7 @@ public class CommonController {
             return new Result<>(401, "账号或者密码错误", "");
         }
         User user = optionalUser.get();
-        if(userLoginByAccountDTO.getMark() != user.getMark()) {
+        if(!Objects.equals(userLoginByAccountDTO.getMark(), user.getMark())) {
             return new Result<>(401, "请选择正确身份", "");
         }
         if (user.getDisabled() == 1) {