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				@@ -1519,13 +1519,32 @@ public class TeacherServiceImpl extends ServiceImpl<TeacherDao, Teacher> impleme 
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				     } 
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				     private void addBindUnBindRecord(Long teacherId, Long tenantId, Boolean bind) { 
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				-        UserTenantBindRecord bindRecord = new UserTenantBindRecord(); 
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				-        bindRecord.setUserId(teacherId); 
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				-        bindRecord.setUserType("TEACHER"); 
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				-        bindRecord.setTenantId(tenantId); 
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				-        bindRecord.setBindStatus(bind); 
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				-        bindRecord.setBindTime(new Date()); 
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				-        userTenantBindRecordService.save(bindRecord); 
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				+        if (bind){ 
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				+            UserTenantBindRecord bindRecord = userTenantBindRecordService.lambdaQuery() 
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				+                    .eq(UserTenantBindRecord::getUserId, teacherId) 
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				+                    .eq(UserTenantBindRecord::getUserType, "TEACHER") 
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				+                    .eq(UserTenantBindRecord::getTenantId, tenantId).one(); 
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				+            if (bindRecord != null) { 
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				+                bindRecord.setBindStatus(true); 
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				+                bindRecord.setBindTime(new Date()); 
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				+                userTenantBindRecordService.updateById(bindRecord); 
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				+            }else { 
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				+                UserTenantBindRecord userTenantBindRecord = new UserTenantBindRecord(); 
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				+                userTenantBindRecord.setUserId(teacherId); 
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				+                userTenantBindRecord.setUserType("TEACHER"); 
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				+                userTenantBindRecord.setTenantId(tenantId); 
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				+                userTenantBindRecord.setBindStatus(true); 
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				+                userTenantBindRecord.setBindTime(new Date()); 
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				+                userTenantBindRecordService.save(userTenantBindRecord); 
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				+            } 
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				+        }else { 
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				+            userTenantBindRecordService.lambdaUpdate() 
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				+                    .eq(UserTenantBindRecord::getUserId, teacherId) 
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				+                    .eq(UserTenantBindRecord::getUserType, "TEACHER") 
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				+                    .eq(UserTenantBindRecord::getTenantId, tenantId) 
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				+                    .set(UserTenantBindRecord::getBindStatus, false) 
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				+                    .update(); 
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				+        } 
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				     } 
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				     private void sendBindUnBindSMS(Long userId, String phone, MessageTypeEnum messageType, Long tenantId) { 
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