修复bug

ie-system/src/main/java/com/ruoyi/dz/service/impl/DzTeacherServiceImpl.java

@@ -78,7 +78,9 @@ public class DzTeacherServiceImpl implements IDzTeacherService
     {
         if (null == dzTeacher.getDeptId()){
             DzSchool school = schoolMapper.selectDzSchoolById(dzTeacher.getCampusId());
-            dzTeacher.setDeptId(school.getDeptId());
+            if (null!=school){
+                dzTeacher.setDeptId(school.getDeptId());
+            }
         }
         dzTeacherMapper.insertDzTeacher(dzTeacher);//将老师的userId填充到user的userName中
         Long teacherId = dzTeacher.getTeacherId();